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Generalized Orthogonal Or Special Mathematical Techniques

Generalized Orthogonal Or Special Mathematical Techniques patent applications listed include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.

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Multiplex Communications


Generalized Orthogonal Or Special Mathematical Techniques



Wideband signal generation for channel estimation in time-division-duplexing communication systems
10/30/14 - 20140321258 - A coax network unit (CNU) is coupled to a coax line terminal (CLT). In first and second modes of operation, the CNU transmits data during an upstream window and receives data during a downstream window. In the first mode of operation, a duration of data transmission for the upstream window...

Methods and apparatus in a wireless communication system
10/30/14 - 20140321259 - The present invention relates to methods and apparatus in a RBS and a UE for reference signal (RS) measurements in an OFDM system, that enable having a configurable RS transmission bandwidth which is smaller than the system bandwidth. This allows for better interference coordination of RS, which in turn improves...

Method and apparatus for an adaptive filter architecture
09/18/14 - 20140269248 - A system that incorporates teachings of the subject disclosure may include, for example, a method for selecting a spectral region in a radio frequency spectrum for initiating a communication session having an uplink and a downlink, correlating a signal strength of portions of the spectral region to generate a correlation...

Method for frequency division duplex communications
08/07/14 - 20140219075 - The high quality PCS communications are enabled in environments where adjacent PCS service bands operate with out-of-band harmonics that would otherwise interfere with the system's operation. The highly bandwidth-efficient communications method combines a form of time division duplex (TDD), frequency division duplex (FDD), time division multiple access (TDMA), orthogonal frequency...

Method of allocating resources for transmitting uplink signal in mimo wireless communication system and apparatus thereof
07/03/14 - 20140185425 - A method of allocating resources for transmitting a signal in a Multiple-Input Multiple-Output (MIMO) wireless communication system is disclosed. The method includes allocating one or more spatial resources of a plurality of spatial resources corresponding to first Single Carrier-Frequency Division Multiple Access (SC-FDMA) symbols to a first transport block, allocating...

Method for transferring data stream
05/29/14 - 20140146658 - A method for transmitting data stream includes the steps of analyzing a request to generate a transmitting command, calculating a data receiving ability of a receiving end when receiving the transferring command, calculating an I frame dividing rate, a P frame dividing rate, and a B frame dividing rate based...

Simplified multi-modulation coding set (mcs) or multiple profile transmission (mpt) scheme for communications
05/08/14 - 20140126345 - A communication device includes a media access control (MAC) and a physical layer (PHY) processor and supports multi-profile communications with one or more other communication devices. The PHY processor selects a profile based on one or more characteristics of a communication pathway between the device and the one or more...

Methods and apparatus for providing multi-antenna enhancements using multiple processing units
03/20/14 - 20140078880 - Certain aspects of the present disclosure relate to techniques for providing multi-antenna enhancements using multiple processing units. A UE (User Equipment) may receive data via three or more antennas. The UE may determine a number of independent processing units to be employed to process the data, wherein the determined number...

Noise power estimation method
11/28/13 - 20130315049 - A method for estimating noise power in a received signal that was transmitted using an orthogonal frequency division multiple access (OFDMA) modulation scheme in which pilot symbols are transmitted during OFDM symbol periods of the transmitted signal, the method comprising: interleaving a de-patterned pilot symbol that was transmitted in an...

Channel sounding and estimation strategies for antenna selection in mimo systems
11/28/13 - 20130315050 - A method of antenna selection, in a MIMO system in which a transmitter having a first plurality of RF chains communicates with a receiver having a second plurality of RF chains, includes transmitting consecutive sounding packets produced by the first plurality of RF chains. The consecutive sounding packets each include...

Method of resource allocation and signaling for aperiodic channel sounding
08/01/13 - 20130194908 - A method for resource allocation. The method includes signaling a set of SRS subframes in which an SRS can be transmitted, wherein a UE not capable of aperiodic SRS transmission can be instructed to transmit periodic SRS in any of the SRS subframes. The method further includes signaling which of...

Ordered reduced set successive detector for low complexity, quasi-ml mimo detection
07/25/13 - 20130188470 - An Ordered Reduced Set Successive Detector (RSSD) for the V-BLAST spatial multiplexing scheme that uses a general two-dimensional non-uniform set partitioning for different symbols. The detector provides improved diversity and SNR gains at reduced complexity compared to a uniform set partitioning based detector. The detector can be used to reduce...

Wireless communication apparatus, wireless communication system, and transmission method
06/27/13 - 20130163402 - A wireless communication apparatus (a) generates a transmission symbol; (b) assigns, to the transmission symbol, a given number of units each formed of a symbol and a subcarrier in a frame which is formed of M (M is a positive integer) symbols and N (N is a positive integer) subcarriers...

Method and apparatus for detecting radio signal
06/20/13 - 20130155831 - In an aspect, a method for transmitting data in a wireless communication system is provided. A wireless device determines a subcarrier and a subcarrier group to which a data sequence is allocated. The wireless device modulates the data sequence by a transmit filter to generate a data stream. A waveform...

Method and terminal for transmitting uplink control information and method and apparatus for determining the number of coded symbol
06/20/13 - 20130155832 - The disclosure discloses a method and terminal for transmitting uplink control information. The method includes: coding the uplink control information required to be transmitted and data information corresponding to one or two transport blocks respectively, obtaining an encoded sequence according to a target length, and forming a corresponding coded modulation...

Adaptive time diversity and spatial diversity for ofdm
06/06/13 - 20130142031 - An adaptable orthogonal frequency-division multiplexing system (OFDM) that uses a multiple input multiple output (MIMO) to having OFDM signals transmitted either in accordance with time diversity to reducing signal fading or in accordance with spatial diversity to increase the data rate. Sub-carriers are classified for spatial diversity transmission or for...

Radio communication device and constellation control method
05/16/13 - 20130121129 - A base station is provided for receiving an acknowledgement or negative acknowledgement (ACK/NACK) signal, including a transmitting unit configured to transmit a control signal using one or a plurality of CCE(s). The base station also includes a receiving unit configured to receive an ACK/NACK signal, the ACK/NACK signal being multiplied...

Method for transmitting an uplink signal, and apparatus for same
05/09/13 - 20130114391 - The present invention relates to a wireless communication system. More particularly, the present invention relates to a method for transmitting an uplink signal, comprising: multiplexing control information and multiple pieces of data information; and transmitting the multiplexed control information and multiple pieces of data information through a physical uplink shared...

Low latency channel estimation for downlink mimo
05/02/13 - 20130107694 - When more than two layers are multiplexed in one CDM group, length-4 OCC has to be used across both clusters in one subframe. This means that slot-by-slot channel estimation according to conventional schemes cannot be exploited and Doppler impact cannot be well overcome. By introducing virtual variables and virtual channel...

Carrier frequency acquisition method and apparatus
03/28/13 - 20130077463 - The present invention discloses a carrier frequency acquisition method and apparatus in which the structure of a transmission frame includes a short training sequence, the method including: delaying a received short training sequence by L sampling points and multiplying the delayed short training sequence with the original short training sequence...

Codebook generation system and associated methods
03/07/13 - 20130058204 - A codebook generation system and associated methods are generally described herein....

System and method for wireless communications
03/07/13 - 20130058205 - A system and method for wireless communications is provided. A method for operating in a communications network includes receiving a codebook, the codebook includes a plurality of codewords, and determining if the codebook satisfies a constant modulus property. The method also includes in response to determining that the codebook does...

Orthogonal codes based code division multiplexing method, multiplexing device, and de-multiplexing device
02/21/13 - 20130044580 - The present disclosure provides an orthogonal codes based code division multiplexing method of performing the code division multiplexing of demodulation reference signals in multiple layers of resource blocks by using orthogonal matrices, the method comprising: changing the order of chips in particular rows of a first orthogonal matrix to obtain...

Code division muliplexing method, transmitting device and receiving device using the method
02/14/13 - 20130039162 - There are provided a code division multiplexing method as well as a transmitting device and a receiving device using the method. The method performs code division multiplexing of a plurality of signals by using a code matrix, the code matrix comprising a plurality of code words, the number of which...

Codebook generation system and associated methods
02/07/13 - 20130033977 - A codebook generation system and associated methods are generally described herein....

Channel state information feedback device, method thereof, and base station
01/31/13 - 20130028068 - An embodiment of the present invention relates to a wireless communication system, wherein said wireless communication system uses multiple input and multiple output antenna (MIMO) on both transmission and receiving ends....

Frequency offset compensation and equalization method and device in an orthogonal frequency division multiplexing system
11/29/12 - 20120300610 - A method is disclosed for frequency offset compensation and equalization in an orthogonal frequency division multiplexing system. The method comprises: acquiring a channel estimation value h and a frequency offset value f at a reference symbol; acquiring a Toeplitz matrix M(f) based on the frequency offset value f; performing phase...

Resource allocation method and apparatus of multi-relay orthogonal frequency division multiplexing system
09/20/12 - 20120236704 - A resource allocation method and apparatus of a multi-relay orthogonal frequency division multiplexing system are disclosed. The resource allocation method of a multi-relay orthogonal frequency division multiplexing system includes: obtaining actual channel information; obtaining resource allocation parameters according to a mathematical optimization problem based on the actual channel information, where...

Ofdm transmission/reception apparatus
08/09/12 - 20120201119 - An OFDM signal transmission apparatus is provided, which includes a mapping unit configured to map first signals into N subcarriers and second signals into M subcarrier(s) to form an OFDM signal, wherein N is larger than M. The first signals are each indicating a same bit of retransmission information and...

Methods of uplink channelization in lte
08/09/12 - 20120201120 - Methods of a slot-level remapping physical uplink control channels into two resource blocks respectively located at two slots of a subframe, are generally adapted to a 3GPP LTE physical uplink where ACK/NAK resource blocks may be applied by the extended cyclic prefix, adapted to a complex 3GPP LTE physical uplink...

Method, system and apparatus for downlink shared channel reception in cooperative multipoint transmissions
07/12/12 - 20120176884 - A method and apparatus may be used to enable reception of a downlink (DL) shared channel in a cooperative multipoint transmission (CoMP). The method and apparatus may determine whether CoMP is applied to a transmission. The method and apparatus may acquire other CoMP related information. The method and apparatus may...

System and method for transceiver design
07/05/12 - 20120170442 - A method for operating a controller of a multiple input, multiple output communications system includes formulating an objective function according to a resource allocation for a user equipment (UE) and a mean square error expression, and updating the objective function to generate an updated resource allocation for the UE, a...

Multi-user multiplexing method and transmission device
05/03/12 - 20120106317 - The present invention provides a method and apparatus for multi-user multiplexing. The method includes: a transmission apparatus performing layer mapping on data steams to be transmitted of an open-loop user and a close-loop user respectively; the transmission apparatus performing pre-coding processing on a layer data matrix of the open-loop user...

Method and apparatus for multiplexing and demultiplexing multi-channel signals and system for transmitting multi-channel signals
03/29/12 - 20120075985 - A method for multiplexing multi-channel signals includes: acquiring sample signals of K channels of signals by using a first signal, in which K is a natural number greater than or equal to 2, the first signal has a first frequency F1 and the highest frequency of the K channels of...

Systems and methods for transmit diversity for dft precoded channels
02/16/12 - 20120039158 - A transmission method and apparatus that combines the benefits of DFT precoding and transmit diversity coding for PUCCH transmission. In one aspect, the invention provides an improved transmit diversity coding method and apparatus for DFTS-OFDM PUCCH with minimal impact on multiplexing capacity. In one embodiment, the improved transmit diversity method...

Method for generating reference signal sequence in multi-antenna wireless communication system and apparatus for same
02/09/12 - 20120033540 - The present application discloses a method in which a base station transmits a reference signal sequence in a wireless communication system. In detail, the method comprises the steps of: generating a pseudo-random sequence using a first m-sequence and a second m-sequence; generating the reference signal sequence using the pseudo-random sequence;...

Apparatus and method for precoding using channel orthogonalization in multi-user multi-antenna system
01/26/12 - 20120020200 - An apparatus and method for transmitting in a multi-user multi-antenna system are provided. The apparatus includes a precoder for orthogonalizing a channel by removing a channel element of a corresponding terminal with respect to multiple terminals, for determining an effective channel of each terminal by decomposing the orthogonalized channel using...

Method of allocating resources for transmitting uplink signal in mimo wireless communication system and apparatus thereof
01/19/12 - 20120014242 - A method of allocating resources for transmitting a signal in a Multiple-Input Multiple-Output (MIMO) wireless communication system is disclosed. The method includes allocating one or more spatial resources of a plurality of spatial resources corresponding to first Single Carrier-Frequency Division Multiple Access (SC-FDMA) symbols to a first transport block, allocating...

Allocation and logical to physical mapping of scheduling request indicator channel in wireless networks
01/19/12 - 20120014243 - A method for allocating resources for a scheduling request indicator (SRI) is disclosed. An SRI cycle period for use by user equipment (UE) within a cell is transmitted from a NodeB in a cell to UE within the cell. The NodeB transmits a specific SRI subframe offset and an index...

Base station apparatus and method for use in mobile communication system
01/12/12 - 20120008489 - One aspect of the present invention relates to a base station apparatus in a mobile communication system, comprising: an acquisition unit configured to receive an uplink signal from a user equipment and acquire channel condition information and an average value of the channel condition information for each of one or...

Block interleaving method and block interleaver using the same
12/29/11 - 20110317541 - 1....

Process for beamforming data to be transmitted by a base station in a mu-mimo system and apparatus for performing the same
12/08/11 - 20110299379 - A process for beamforming data to be transmitted in a MU-MIMO communication system comprising a base station and a selected set of User Equipments (UE) communicating with said base station; said data being precoded by said base station in accordance with a beamforming matrix complying with a precoding matrix under...

Data exchange device using orthogonal vectors
12/01/11 - 20110292784 - An integrated circuit and a method for transmitting messages from initiator units of an integrated circuit to at least one target unit of the integrated circuit. The initiator units transform first digital messages into second digital messages, the second messages being added, then transmitted to the target unit. The transformation...

Channel information generating device and method for spatial division multiplexing algorithm in a wireless communication system, and data transmission apparatus and method adopting the same
10/27/11 - 20110261675 - Disclosed are a channel information generating device and a method for spatial division multiplexing algorithm in a wireless communication system and data transmission apparatus and a method adopting the same. According to one embodiment of the present invention, a channel information generating device for space division multiplexing algorithm in an...

System and method for sss detection under carrier frequency offset in an orthogonal frequency-division multiple access downlink channel
10/20/11 - 20110255394 - A system and method for SSS detection under carrier frequency offset in an orthogonal frequency-division multiple access (OFDMA) downlink channel. A processor receives a signal sample that includes a transmission on a primary synchronization signal (PSS) and a transmission on a one secondary synchronization signal (SSS). The processor determines a...

Method of multiuser mimo wireless communication and device of multiuser mimo wireless communication
10/06/11 - 20110242962 - The present invention achieves a communication speed close to a theoretical limitation with suppressing a computing amount and without increasing protocol overhead. In a multiuser MIMO wireless communication method according to the present invention, a receive weight matrix is determined based on a channel matrix, the channel matrix is updated...

Device for exchanging data between components of an integrated circuit
09/29/11 - 20110235501 - A method for transmitting messages from first units of an integrated circuit to at least one second unit of the integrated circuit. The first units generate first digital messages and transform them into second digital messages obtained by application of an orthogonal or quasi-orthogonal transformation to the first messages. The...

Wireless communication system, and apparatus and method for wireless communication
08/25/11 - 20110205883 - An embodiment of the invention provides a wireless communication system for carrying out a spatial multiplexing communication between a transmitter, and a receiver, the system including: a channel information matrix acquiring section for acquiring a channel information matrix; a weighting factor matrix arithmetically operating section for obtaining a weighting factor...

Method of using a quantized beamforming matrix from multiple codebook entries for multiple-antenna systems
08/11/11 - 20110194400 - A quantized multi-rank beamforming scheme for multiple-antenna systems such as a multiple-input-multiple-output (MIMO) wireless downlink. User equipment (UE) estimates downlink channel and transmit power and determines rank and power allocations. A quantized beamforming matrix is then determined by the UE using successive beamforming. The UE also determines channel quality indices...

Reference sequence construction for fast cell search
08/11/11 - 20110194401 - A method and apparatus for fast cell search based on a chirp reference signal transmission is disclosed herein. A primary synchronization channel (P-SCH) and two secondary synchronization channels (S-SCH1 and S-SCH2) will be utilized. S-SCH1 will comprise a reference sequence having a first index value and S-SCH2 will comprise a...

Code division multiplexing method and system
07/28/11 - 20110182169 - This invention provides a code division multiplexing method and system which include the following steps: constructing the basic grouping perfect orthogonal complementary code pair mate, modulating the C code and S code of the basic grouping perfect orthogonal complementary code pair mate to the M orthogonal carrier frequency or orthogonal...

Apparatus and method for enhancing features of uplink reference signals
07/07/11 - 20110164489 - Methods and apparatuses for configuring and transmitting Reference Signals (RS) accompanying data signals from User Equipments (UEs), such that Sounding Reference Signals (SRS) are transmitted from some UEs over a part of a possible transmission bandwidth, with or without the use of SRS bandwidth hopping....

Precoding for single transmission streams in multiple antenna systems
06/16/11 - 20110141876 - Precoding for multiple transmission streams in multiple antenna systems. Disclosed herein is a general method that transmits signal from multiple antennas using a one/two dimensional precoder. This precoder is fixed in a given resource block (RB) or slot, which is composed of P subcarriers and Q OFDM symbols (where the...

Offsetting beacon positions in a time division duplex communication system
05/19/11 - - Systems and methodologies are described that facilitate generating and/or analyzing downlink transmission units in OFDM TDD environments. Beacon signals may be selectively inserted within downlink transmission units; for example, the position of Beacon signals may vary from cell to cell. Further, the position may be a function of a characteristic...

Method and apparatus of downlink subchannelization in wireless communication system
05/05/11 - 20110103218 - A method of downlink subchannelization in a wireless communication system includes: transmitting a network entry and network discovery information including an open loop (OL) region parameter; and mapping a physical resource unit (PRU) to a contiguous resource unit (CRU) or a distributed resource unit (DRU) with respect to ith frequency...

Multiplexing data and reference information in a wireless communication system
04/28/11 - 20110096657 - Methods, devices and computer program products are provided to improve uplink communications in a wireless communication system. Reference symbols in an uplink transmission radio subframe are time-frequency multiplexed with additional data symbols. The multiplexed data symbols are transmitted in an uplink transmission to another device within the wireless communication network...

Wide area and local network id transmission for communication systems
03/10/11 - 20110058469 - The embodiments utilize OFDM symbols to communicate network IDs. The IDs are encoded into symbols utilizing the network IDs as seeds to scramble respective pilots that are then transmitted by utilizing the symbols. The pilots can be structured into a single OFDM symbol and/or multiple OFDM symbols. The single symbol...

Method and device for controlling uplink power
02/10/11 - 20110032813 - A method for controlling uplink power is provided, which is used for implementing the uplink power control of the virtual multiple input multiple output system, so as to save the system resource. The method includes: determining at least two user equipments being paired in a virtual multiple input multiple output...

Method and apparatus of subcarrier grouping for a wireless communication system
02/03/11 - 20110026392 - A method sub-carrier grouping for a wireless communication system including a plurality of sub-carriers is disclosed. The method includes determining a coherent bandwidth of the plurality of sub-carriers, and dividing the plurality of sub-carriers into a plurality of sub-carrier groups according to the coherent bandwidth, wherein the size of each...

Timeslot sharing using unbalanced qpsk modulation
01/13/11 - 20110007624 - In a radio transmission scheme reusing slots such as by using Orthogonal Sub Channels (OSC) in the downlink channel a parameterized, hybrid quaternary modulation is employed. In the hybrid quadrature modulation, the symbol constellation is in quadrature, with the 4 symbols lying on the unit circle in the complex plane....

Group identification and definition within multiple user, multiple access, and/or mimo wireless communications
01/06/11 - 20110002219 - Group identification and definition within multiple user, multiple access, and/or MIMO wireless communications. A group identification definition field may be transmitted to a number of receiving devices for use in interpreting current or subsequently received packets that include a group identification field (group ID). The group ID can serve a...

Constellation re-arrangement and bit grouping
10/28/10 - 20100271929 - Methods and systems for subpacket generation using a convolutional turbo code in hybrid automatic repeat request re-transmissions that includes separating a codeword into subblocks of bits, interleaving the subblocks, and performing a permutation to group the bit streams and rearrange a symbol constellation such that bits are assigned to bit...

Carrier allocation and time sharing for ofdma/tdma networks
09/30/10 - 20100246375 - where d=Nd/M. The set of N data subcarriers is mapped to the set of Nd logical subcarriers according to the logical indices, and the data subcarriers are allocated to the logical subcarriers....

Rate matching device and method thereof, de-rate matching device and method thereof
09/23/10 - 20100238786 - A rate matching method and device wherein the number of times to output each bit included in input data is determined in parallel, and the data length of the input data is expanded or contracted, based on basic parameters for expanding or contracting the input data and the bit number...

Method and apparatus for ranging in broadband wireless access communication system
08/12/10 - 20100202282 - An apparatus and operation method of a Mobile Station (MS) for ranging in a broadband wireless access communication system includes receiving information for ranging code hopping from a Base Station (BS). The MS determines a hopping offset value that is a start of a ranging codes group using the information...

Technique for generating an sc-fdma signal
08/05/10 - 20100195479 - A technique for generating a Single-Carrier Frequency Division Multiple Access (SC-FDMA) signal based on a Constant Amplitude Zero Auto-Correlation (CAZAC) sequence is disclosed. A method embodiment of this technique comprises generating a frequency domain representation of the CAZAC sequence by providing an analytical representation of the CAZAC sequence in the...

Method and apparatus for transmitting and receiving a preamble for synchronization in a mimo-ofdm communication system
08/05/10 - 20100195480 - A method and apparatus for transmitting a preamble for frame synchronization and channel estimation in a MIMO-OFDM communication system are provided. An OFDM communication system using Q transmit antennas generates a base preamble sequence including a CP and an orthogonal sequence. If Q≦a predetermined number M, a preamble sequence for...

Method of transmitting reference signal and transmitter using the same
08/05/10 - 20100195481 - A method and apparatus of transmitting a reference signal in a wireless communication system is provided. A reference signal sequence is generated by using a pseudo-random sequence. A portion or entirety of the reference signal sequence is mapped to at least one resource block and is transmitted. The pseudo-random sequence...

Methods and systems for wimax broadcasting messages processing
07/29/10 - 20100188965 - Certain embodiments of the present disclosure propose a technique that may be utilized to accelerate the processing of MAC management messages by an MS, allowing the MS to return to a lower power state sooner, thereby conserving power. An indication of whether or not data bursts in a downlink (DL)...

Feedback for transmit precoding in wireless networks
07/29/10 - 20100188966 - Channel state information for closed-loop transmit precoding in MIMO networks is fed back from the MSs to the BSs. The feedback is quantized using codebooks shared by the MSs and BSs to reduce overhead. The codebooks can be full-rank or rank-one. The quantized feedback is applicable to any definitions of...

Near ml decoding method based on metric-first search and branch length threshold
06/24/10 - 20100157785 - In this invention, we propose a near maximum likelihood (ML) method for the decoding of multiple input multiple output systems. By employing the metric-first search method, Schnorr-Euchner enumeration, and branch length thresholds in a single frame systematically, the proposed technique provides a higher efficiency than other conventional near ML decoding...