FREE patent keyword monitoring and additional FREE benefits. http://images1.freshpatents.com/images/triangleright (1K) REGISTER now for FREE triangleleft (1K)
FreshPatents.com Logo    FreshPatents.com icons
Monitor Keywords Patent Organizer File a Provisional Patent Browse Inventors Browse Industry Browse Agents


Multiplex Communications > Generalized Orthogonal Or Special Mathematical Techniques > Particular Set Of Orthogonal Functions

Particular Set Of Orthogonal Functions

Particular Set Of Orthogonal Functions patent applications listed include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.

11/20/14 - 20140341010 - Signaling of random access preamble sequences in wireless networks
Transmission of random access preamble structures within a cellular wireless network is based on the use of cyclic shifted constant amplitude zero autocorrelation (“CAZAC”) sequences to generate the random access preamble signal. A pre-defined set of sequences is arranged in a specific order. Within the predefined set of sequences is...

11/13/14 - 20140334284 - Transmitter and receiver for wireless communication using revolution division multiplexing, and signal transmission and reception method thereof
A signal transmission and reception method includes generating a plurality of electromagnetic wave mode functions having orthogonality in a spatial domain using a plurality of input signals, synthesizing and wirelessly transmitting the generated electromagnetic wave mode functions, receiving a revolution division multiplexing electromagnetic wave having characteristics of phase rotation in...

06/26/14 - 20140177427 - Truncated zadoff-chu sequence for lte uplink reference signals
A method to generate truncated Zadoff-Chu sequences is disclosed. A large Zadoff-Chu sequence is generated, based on a maximum transmission bandwidth, then the sequence is truncated based on the actual transmission bandwidth. The Zadoff-Chu sequence is cyclicly extended, as needed, to maintain a quasi-orthogonal characteristic. The result is that there...

06/19/14 - 20140169150 - Method for mapping physical hybrid automatic repeat request indicator channel
A method for mapping a physical hybrid automatic repeat request indicator channel (PHICH) is described. The method for mapping a PHICH includes determining an index of a resource element group transmitting a repetitive pattern of the PHICH, according to a ratio of the number of available resource element groups in...

05/22/14 - 20140140188 - Cooperative subspace multiplexing in communication networks
A source node selects a plurality of transmitting nodes to cooperatively encode a set of original packets to transfer to a destination node. Encoding produces a plurality of coded packets and a corresponding code matrix of coefficients. The coded packets and the corresponding code matrix comprise a set of independent...

05/22/14 - 20140140189 - Cooperative subspace demultiplexing in communication networks
A source node selects a plurality of transmitting nodes to cooperatively encode a set of original packets to transfer to a destination node. Encoding produces a plurality of coded packets and a corresponding code matrix of coefficients. The coded packets and the corresponding code matrix comprise a set of independent...

05/22/14 - 20140140190 - Wireless terminal apparatus and wireless base station apparatus
Both a wireless terminal apparatus and wireless base station apparatus are provided that can, in an operation of encoding the control signals of the upstream link transmitted from the multiple terminal stations while encoding with regard to each of the terminal stations, increase a number of the terminal stations to...

05/22/14 - 20140140191 - Wireless terminal apparatus and wireless base station apparatus
Both a wireless terminal apparatus and wireless base station apparatus are provided that can, in an operation of encoding the control signals of the upstream link transmitted from the multiple terminal stations while encoding with regard to each of the terminal stations, increase a number of the terminal stations to...

05/22/14 - 20140140192 - Wireless terminal apparatus and wireless base station apparatus
Both a wireless terminal apparatus and wireless base station apparatus are provided that can, in an operation of encoding the control signals of the upstream link transmitted from the multiple terminal stations while encoding with regard to each of the terminal stations, increase a number of the terminal stations to...

02/20/14 - 20140050076 - Method for generating a superset of quasi-orthogonal sets of sequences
Generate a first set S comprising a plurality of quasi-orthogonal sets of sequences; generate L number of second sets of quasi-orthogonal sets of sequences Th by symbol-by-symbol multiplication of each sequence in the first set S with signature sequences {wh(k)}, wherein h=0, . . . , L−1, L is a...

02/13/14 - 20140043955 - Carrier aggregation in wireless communication systems
Provided is a data transmission system using a carrier aggregation. The data transmission system may assign a radio resource based on a correspondence relationship between a downlink and an uplink, and may transmit data using the assigned radio resource....

12/12/13 - 20130329542 - Ultra-wide bandwidth system and method for in-premises wireless networking
An IS-OFDM system for ultra-wideband (UWB) wireless communications that suppresses narrow-band interference, comprising an in-premises base station (IBS) is described. The IBS further comprises an IS-OFDM transceiver for communicating with a plurality of in-premises terminals (ITs) without creating interference outside an in-premises perimeter. Further, a method for operating an IS-OFDM...

12/05/13 - 20130322229 - Apparatus and method for transmitting and receiving of cyclic shift parameter for supporting orthogonality in mimo environment
A method includes: determining a Cyclic Shift (CS) parameter that implicitly indicates an orthogonality allocation rule and orthogonality-related information, by determining a multiple access state of a User Equipment (UE), and transmitting the determined CS parameter to the UE, wherein the orthogonality-related information includes an Orthogonal Cover Code indicated by...

11/14/13 - 20130301400 - System access and synchronization methods for mimo ofdm communications systems and physical layer packet and preamble design
A method and apparatus are provided for performing acquisition, synchronization and cell selection within an MIMO-OFDM communication system. A coarse synchronization is performed to determine a searching window. A fine synchronization is then performed by measuring correlations between subsets of signal samples, whose first signal sample lies within the searching...

11/07/13 - 20130294217 - Radio transmitter, radio communication system, and radio transmission method
A transmission apparatus comprising a plurality of antennas, a scheduler configured to perform transmission scheduling in units of chunks each determined based on a prescribed frequency bad and a prescribed time so as to transmit signals via the plurality of antennas, and a transmission circuit configured to apply phase rotations...

10/31/13 - 20130286812 - Method of transmitting reference signal and transmitter using the same
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...

09/12/13 - 20130235714 - Method and apparatus for a 1 mhz long training field design
An approach is provided for defining a 1 MHz preamble of a packet. The approach involves determining a preamble sequence of a packet, the preamble sequence having a determinable length. The approach also involves causing, at least in part, the preamble sequence to be divided into a predetermined number of...

07/04/13 - 20130170333 - Method and apparatus for transmitting and receiving a pilot sequence in a broadcasting communication system
A method and an apparatus for transmitting and receiving a pilot sequence in an Single Carrier-Orthogonal Frequency Division Multiplexing (SC-OFDM) scheme of a broadcasting communication system. The method includes determining seed values for Orthogonal Frequency Division Multiplexing (OFDM) symbols; generating pilot sequences including information related to an OFDM symbol index...

05/16/13 - 20130121130 - Carrier aggregation in wireless communication systems
Provided is a data transmission system using a carrier aggregation. The data transmission system may assign a radio resource based on a correspondence relationship between a downlink and an uplink, and may transmit data using the assigned radio resource....

05/09/13 - 20130114392 - Method and apparatus for resource mapping and code division multiplexing
The present disclosure discloses a method and an apparatus for resource mapping and code division multiplexing. In the present disclosure, each cell selects a mapping scheme among at least two mapping schemes to implement resource mapping, which effectively reduces interference imposed on reference signal symbols of users at the edge...

04/18/13 - 20130094344 - Cdd precoding for open loop su mimo
A method for data transmission, comprises the steps of modulating data to be transmitted via a transmitter into a plurality of modulated symbols, generating a codebook comprising a plurality of codewords, selecting a codeword from the codebook as a precoding matrix by a predetermined cycling selection, precoding the modulated symbols...

04/11/13 - 20130088949 - Methods and systems for csi-rs resource allocation in lte-advance systems
A method of allocating resource elements in an orthogonal frequency division multiplexed (OFDM) system for transmission of a channel state information reference signal (CSI-RS) is disclosed. The method includes converting one or more resource elements to a two-dimensional frequency-time domain; and partitioning the one or more converted resource elements to...

03/28/13 - 20130077464 - Orthogonal variable spreading factor code sequence generation
An apparatus generally having a first circuit and a second circuit is disclosed. The first circuit may be configured to generate (i) a plurality of first code bits in response to an index value and (ii) a plurality of first intermediate bits in response to the index value. The first...

03/28/13 - 20130077465 - Communication apparatus and resource derivation method
)...

02/14/13 - 20130039163 - Orthogonal resource selection transmit diversity and resource assignment
Methods of allocating orthogonal resources of a wireless communication network to a user equipment (UE) that uses transmit diversity are disclosed. In one or more embodiments, the UE is configured to transmit a reference symbol and a modulated symbol on multiple orthogonal resources on an antenna. The method includes: selecting,...

01/10/13 - 20130010586 - Method and apparatus for resource mapping and code division multiplexing
The present disclosure discloses a method and an apparatus for resource mapping and code division multiplexing. In the present disclosure, each cell selects a mapping scheme among at least two mapping schemes to implement resource mapping, which effectively reduces interference imposed on reference signal symbols of users at the edge...

12/27/12 - 20120327757 - Detection method and apparatus for multiple-input multiple-output single-carrier block transmission system
The present invention discloses a detection method, a receiver, and an apparatus in a multiple-input multiple-output single-carrier block transmission system. Through sorted QR decomposition (Sorted QR Decomposition, SQRD) decomposition based on a minimum mean squared error (Minimum Mean Squared Error, MMSE) criterion, an matrix inverse operation in minimum mean squared...

08/16/12 - 20120207010 - Wireless communication system, transmitter, receiver and wireless communication method
A transmitter transmits a wireless signal produced by allocating data to component carriers for a plurality of communication bands, and a receiver receives the wireless signal and carries out a reception process for the received wireless signal with a predetermined reception sampling frequency are provided, and the component carriers are...

07/05/12 - 20120170443 - Ultra-wide bandwidth system and method for in-premises wireless networking
An IS-OFDM system for ultra-wideband (UWB) wireless communications that suppresses narrow-band interference, comprising an in-premises base station (IBS) is described. The IBS further comprises an IS-OFDM transceiver for communicating with a plurality of in-premises terminals (ITs) without creating interference outside an in-premises perimeter. Further, a method for operating an IS-OFDM...

06/14/12 - 20120147730 - Wireless communications system with secondary synchronization code based on values in primary synchronization code
A wireless communication system. The system comprises transmitter circuitry (BST1), the transmitter circuitry comprising encoder circuitry (50) for transmitting a plurality of frames (FR). Each of the plurality of frames comprises a primary synchronization code (PCS) and a second synchronization code (SSC). The encoder circuitry comprises of circuitry (501) for...

06/07/12 - 20120140613 - Multiple transmit antenna interleaver design
An arrangement of interleavers allocates bits from an input symbol across sub-symbols transmitted via sub-carriers of multiple orthogonal frequency division multiplex (OFDM) carriers. The input bits are allocated in a fashion to provide separation across subcarriers, and rotation of sub-symbols across the OFDM carriers provides additional robustness in the present...

06/07/12 - 20120140614 - Ofdm apparatus using three-dimensional hexadecimal signal constellation
A three-dimensional OFDN apparatus of the present invenstion comprises: a serial-parallel conversion unit for converting a serial input signal into N parallel input signals; a three-dimensional signal mapping unit for mapping the N parellel input signals on three-dimensional coordinates of a cube-in-cube type constellation, respectively; and a two-dimensional inverse Fourier...

05/17/12 - 20120120787 - Rectangular power spectral densities of orthogonal functions
In this application, a set of orthogonal functions is introduced whose power spectral densities are all rectangular shape. To find the orthogonal function set, it was considered that their spectrums (Fourier transforms of the functions) are either real-valued or imaginary-valued, which are corresponding to even and odd real-valued time domain...

04/12/12 - 20120087230 - Method for antenna calibration in a wideband communication system
The present invention relates to a method for antenna calibration in a communication system having a bandwidth divided into multiple frequency intervals M with multiple communication units 40; 50, each comprising communication circuitry 21, 24: 31, 34; 41, 42; 51, 52, 54 connected to an antenna arrangement 22, 25; 32,...

03/15/12 - 20120063292 - Base station apparatus and radio communication method
A wireless communication apparatus capable of minimizing the degradation in separation characteristic of a code multiplexed response signal. In this apparatus, a control part (209) controls both a AC sequence to be used in a primary spreading in a spreading part (214) and a Walsh sequence to be used in...

03/01/12 - 20120051208 - Methods and systems for multiple access encoding, transmission and decoding
This invention relates to a multiple access encoding method, which includes: expand the complete complementary orthogonal code mate to generate generalized complementary orthogonal code group, where the auto-correlation function of the generalized complementary orthogonal code group mentioned is the impulse response, and the cross-correlation function is zero everywhere; expand the...

03/01/12 - 20120051209 - Method and apparatus for resource mapping and code division multiplexing
The present disclosure discloses a method and an apparatus for resource mapping and code division multiplexing. In the present disclosure, each cell selects a mapping scheme among at least two mapping schemes to implement resource mapping, which effectively reduces interference imposed on reference signal symbols of users at the edge...

02/23/12 - 20120044796 - Method for generating signal pattern using modulus or sequence, and device thereof
Disclosed are a method and an apparatus for generating signal patterns used for a transmission/reception process between a terminal and a base station by using a modular sonar sequence....

02/16/12 - 20120039160 - Integrated circuit for response signal spreading
A wireless communication apparatus capable of minimizing the degradation of the separation characteristic of response signals to be code-multiplexed. In the apparatus, a control part (209) controls both a ZC sequence to be used for the primary spread in a spreading part (214) and a Walsh sequence to be used...

02/02/12 - 20120026861 - Decoding device, decoding method, and program
A decoding device includes an acquisition unit configured to acquire a first frequency signal including a narrowband signal and a wideband signal, a direct inverse orthogonal transform unit configured to perform a direct matrix operation with respect to the narrowband signal of the first frequency signal so as to perform...

12/15/11 - 20110305133 - Ofdm transmission method, which is intended both for sporadic and for continuous data communication, for a wlan
In an OFDM-based transmission method it can be stated for the preamble (4, 7) of a data packet that its N preamble segments (B, B) are obtained from the segment-by-segment multiplication of an initial segment, which is fixed for all N preamble segments, by a multiplication sequence with a length...

12/08/11 - 20110299380 - Pilot signal in an fdma communication system
Methods (500, 800) and corresponding systems (100, 200, 300, 400, 900) for generating a pilot symbol (330) include providing an M-point parallel transform sequence that is a discrete Fourier transform of a CAZAC sequence (312, 504-508). The M-point s parallel transform sequence (312) is distributed (316, 510) to a set...

11/10/11 - 20110273977 - System and method for channel state related feedback in multi-user multiple-input-multiple-output systems
System and method for dimension reduction and for channel and interference condition feedback in a Multi-User Multiple-Input-Multiple-Output (MU MIMO) wireless communication systems. The method for dimension reduction includes determining a number of virtual antennas, vk, for beamformees pertaining to a multi user (MU) transmission group, reducing the dimension of said...

10/20/11 - 20110255395 - Method for constructing space-time/space-frequency code, and transmitting method and apparatus
A method for constructing a space-time/space-frequency code, and a transmitting method and apparatus are provided, which relate to the field of wireless communication technologies. The method for constructing a space-time/space-frequency code includes: classifying at least two transmitter antennas into K groups, and classifying information symbols into K′ groups; constructing a...

10/13/11 - 20110249549 - Method and device for sequencing the zc sequences of the rach
A method and device for sequencing the ZC sequences of the RACH is provided, wherein, the method for sequencing the ZC sequences comprises: according to the CM of OPSK, ZC sequences of the RACH are divided into low CM group and high CM group, to make the index of each...

09/15/11 - 20110222393 - Method of transmitting control signals in wireless communication system
A method of transmitting control signals in a wireless communication system includes multiplexing a first control signal with a second control signal in a slot, the slot comprising a plurality of orthogonal frequency division multiplexing (OFDM) symbols in time domain, the plurality of OFDM symbols being divided into a plurality...

08/18/11 - 20110199888 - Signal separation device and signal separating method
A signal separation device includes a column switching unit switching a column vector of a channel matrix obtained by estimating a propagation path characteristic so that a transmitted signal component of each transmit antenna is in a left end, a QR decomposition layering unit multiplying received signals by an output...

07/21/11 - 20110176406 - Efficient zadoff-chu sequence generation
The present invention generates exponents of elements of a Zadoff-Chu sequence representing a preamble for uplink synchronization of mobile stations or a mobile station reference signal by first obtaining (S1) a preamble index defining the Zadoff-Chu sequence. Then it determines an initial exponent (S3) of the first element in the...

06/09/11 - 20110134747 - Method for uplink transmitting control information
A method for uplink transmitting control information from a user equipment in a wireless communication system comprises selecting a specific point among a plurality of points distributed into a symbol space, corresponding to control information, the symbol space including a modulation dimension and a sequence dimension; mapping a signal corresponding...

06/02/11 - 20110128842 - Method for estimating a received signal and corresponding device
A method and apparatus for estimating a transmission channel in a receiver of an OFDMA signal formed by a plurality of carriers modulated by data elements and distributed in the time-frequency domain in successive symbols, the plurality of carriers including pilot carriers, modulated by reference data elements known by receivers....

05/19/11 - 20110116359 - Methods and apparatus for interleaving in ofdm/ofdma systems
An interleaver of an OFDM/OFDMA transceiver reshapes a binary vector to be transmitted into a matrix, rotates bits in respective columns of the matrix, divides respective rows of the matrix into an integer number of interleaving blocks, and interleaves the bits in the respective interleaving blocks....