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Multiplex Communications > Generalized Orthogonal Or Special Mathematical Techniques

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.

03/20/14 - 20140078880 - Methods and apparatus for providing multi-antenna enhancements using multiple processing units
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...

11/28/13 - 20130315049 - Noise power estimation method
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...

11/28/13 - 20130315050 - Channel sounding and estimation strategies for antenna selection in mimo systems
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...

08/01/13 - 20130194908 - Method of resource allocation and signaling for aperiodic channel sounding
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...

07/25/13 - 20130188470 - Ordered reduced set successive detector for low complexity, quasi-ml mimo detection
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...

06/27/13 - 20130163402 - Wireless communication apparatus, wireless communication system, and transmission method
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...

06/20/13 - 20130155831 - Method and apparatus for detecting radio signal
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...

06/20/13 - 20130155832 - Method and terminal for transmitting uplink control information and method and apparatus for determining the number of coded symbol
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...

06/06/13 - 20130142031 - Adaptive time diversity and spatial diversity for ofdm
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...

05/16/13 - 20130121129 - Radio communication device and constellation control method
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...

05/09/13 - 20130114391 - Method for transmitting an uplink signal, and apparatus for same
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...

05/02/13 - 20130107694 - Low latency channel estimation for downlink mimo
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...

03/28/13 - 20130077463 - Carrier frequency acquisition method and apparatus
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...

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

03/07/13 - 20130058205 - System and method for wireless communications
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...

02/21/13 - 20130044580 - Orthogonal codes based code division multiplexing method, multiplexing device, and de-multiplexing device
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...

02/14/13 - 20130039162 - Code division muliplexing method, transmitting device and receiving device using the method
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...

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

01/31/13 - 20130028068 - Channel state information feedback device, method thereof, and base station
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....

11/29/12 - 20120300610 - Frequency offset compensation and equalization method and device in an orthogonal frequency division multiplexing system
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...

09/20/12 - 20120236704 - Resource allocation method and apparatus of multi-relay orthogonal frequency division multiplexing system
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...

08/09/12 - 20120201119 - Ofdm transmission/reception apparatus
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...

08/09/12 - 20120201120 - Methods of uplink channelization in lte
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...

07/12/12 - 20120176884 - Method, system and apparatus for downlink shared channel reception in cooperative multipoint transmissions
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...

07/05/12 - 20120170442 - System and method for transceiver design
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...

05/03/12 - 20120106317 - Multi-user multiplexing method and transmission device
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...

03/29/12 - 20120075985 - Method and apparatus for multiplexing and demultiplexing multi-channel signals and system for transmitting multi-channel signals
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...

02/16/12 - 20120039158 - Systems and methods for transmit diversity for dft precoded channels
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...

02/09/12 - 20120033540 - Method for generating reference signal sequence in multi-antenna wireless communication system and apparatus for same
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;...

01/26/12 - 20120020200 - Apparatus and method for precoding using channel orthogonalization in multi-user multi-antenna system
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...

01/19/12 - 20120014242 - Method of allocating resources for transmitting uplink signal in mimo wireless communication system and apparatus thereof
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...

01/19/12 - 20120014243 - Allocation and logical to physical mapping of scheduling request indicator channel in wireless networks
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...

01/12/12 - 20120008489 - Base station apparatus and method for use in mobile communication system
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...

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

12/08/11 - 20110299379 - Process for beamforming data to be transmitted by a base station in a mu-mimo system and apparatus for performing the same
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...

12/01/11 - 20110292784 - Data exchange device using orthogonal vectors
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...

10/27/11 - 20110261675 - 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
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...

10/20/11 - 20110255394 - System and method for sss detection under carrier frequency offset in an orthogonal frequency-division multiple access downlink channel
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...

10/06/11 - 20110242962 - Method of multiuser mimo wireless communication and device of multiuser mimo wireless communication
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...

09/29/11 - 20110235501 - Device for exchanging data between components of an integrated circuit
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...

08/25/11 - 20110205883 - Wireless communication system, and apparatus and method for wireless communication
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...

08/11/11 - 20110194400 - Method of using a quantized beamforming matrix from multiple codebook entries for multiple-antenna systems
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...

08/11/11 - 20110194401 - Reference sequence construction for fast cell search
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...

07/28/11 - 20110182169 - Code division multiplexing method and system
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...

07/07/11 - 20110164489 - Apparatus and method for enhancing features of uplink reference signals
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....

06/16/11 - 20110141876 - Precoding for single transmission streams in multiple antenna systems
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...

05/19/11 - - Offsetting beacon positions in a time division duplex communication system
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...

05/05/11 - 20110103218 - Method and apparatus of downlink subchannelization in wireless communication system
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...

04/28/11 - 20110096657 - Multiplexing data and reference information in a wireless communication system
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...

03/10/11 - 20110058469 - Wide area and local network id transmission for communication systems
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...

02/10/11 - 20110032813 - Method and device for controlling uplink power
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...