|
Match
|
Document |
Document Title |
|
|
7620117 |
Apparatus and method for encoding/decoding space time block code in a mobile communication system using multiple input multiple output scheme
Disclosed is an apparatus and method for encoding/decoding a space time block code in a mobile communication system using a multiple input multiple output scheme. In a transmitter employing a...
|
|
|
7620115 |
Space code block coding and spreading apparatus and method for transmission diversity and CDMA diversity transmitter and CDMA mobile station receiver using the same
A space code block coding and spreading apparatus for transmission diversity, a Code Division Multiple Access (CDMA) diversity transmitter using it, and a CDMA mobile station receiver for receiving...
|
|
|
7620114 |
System, method, apparatus, and computer program for wireless communication
The disclosed invention implements SVD-MIMO communication efficiently with a less number of high-load calculation required for singular value decomposition (SVD) processing for a channel matrix. A...
|
|
|
7620113 |
Selectively changing demodulation modes depending on quality of received signal or a control signal
A demodulation apparatus includes a first demodulator for receiving a first received subcarrier and demodulating it by a first demodulation mode, a second demodulator for receiving a second...
|
|
|
7620096 |
Equal BER power control for uplink MC-CDMA with MMSE successive interference cancellation
For a given decision order, MMSE successive interference cancellation (MMSE-SIC) can simultaneously maximize SIRs of all users. To further increase its efficiency, a power control (PC) algorithm,...
|
|
|
7620002 |
Apparatus and method for controlling multiplex number in spatial domain
This invention provides a controller of multiplex number in spatial domain that collects from a plurality of radio communication apparatuses the number of terminals connected thereto and the...
|
|
|
7616704 |
Broadband multicarrier transmitter with subchannel frequency diversity for transmitting a plurality of spatial streams
A multicarrier transmitter assigns for each of a plurality of spatial channels, sets of the constellation symbols to subcarriers of each subchannel. Constellation symbol assignments to the...
|
|
|
7616699 |
Method of soft bit metric calculation with direct matrix inversion MIMO detection
A telecommunication MIMO receiver implements soft bit metric calculation with direct matrix inversion MIMO detection. The receiver has a detector that detects data symbols in a received signal by...
|
|
|
7616698 |
Multiple-input multiple output system and method
A multiple-input multiple-output (MIMO) system can transmit on multiple antennas simultaneously and receive on multiple antennas simultaneously. Unfortunately, because a legacy 802.11a/g device is...
|
|
|
7616695 |
MIMO equalizer design: an algorithmic perspective
A receiver in a MIMO-OFDM system may estimate the transmitted signal by performing a QR decomposition on the channel response matrix. The receiver may utilize Givens rotations to perform the...
|
|
|
7613432 |
Method of controlling mobile communication system, control device, and mobile communication system
A mobile communication system controls switching a transmission diversity system for each channel, and improves the quality of the channel. When the channel type in an uplink is a channel for...
|
|
|
7613259 |
Mobile receiver phase correction circuit
A mobile communication system is designed with an input circuit coupled to receive a first plurality of signals (r j (i+τ j ), i=0−N−1) during a first time (T 0 -T 1 ) from an external source...
|
|
|
7613247 |
Variable throughput reduction communications system and method
A communications system and method having a transmitted data rate determined by an error rate syndrome at a receiver. Data are demultiplexed into a plurality of data channels, and processed as a...
|
|
|
7613245 |
Method and apparatus for multiplexing data and control information in wireless communication systems based on frequency division multiple access
An apparatus for transmitting data in a frequency division multiple access based communication system is disclosed. The apparatus includes a symbol block generator for generating a symbol block in...
|
|
|
7613243 |
Interleaver and parser for OFDM MIMO systems
A MIMO wireless system includes a transmitter that has a transmitter having a parser that parses a bit stream into multiple spatial data streams and multiple interleavers corresponding to the...
|
|
|
7609794 |
Reduced complexity sliding window based equalizer
Data estimation is performed in a wireless communication system using both oversampling and multiple reception antennas. A receive vector is produced for each antenna at a sampling interval which...
|
|
|
7609793 |
Radio receiver and radio receiving method
According to an aspect of the present invention, there is provided with a radio receiver including: one or more antenna which receives radio signals; a plurality of filters which selectively output...
|
|
|
7609792 |
Multiple-input multiple-output multichip transceiver with correlated clock signals
A multichip transceiver operates as part of a multiple-input multiple-output communication system. First receiver circuitry on a first integrated circuit processes radio-frequency (RF) signals...
|
|
|
7609782 |
Space-time coded transmissions within a wireless communication network
Techniques are described for space-time block coding for single-carrier block transmissions over frequency selective multipath fading channels. Techniques are described that achieve a maximum...
|
|
|
7609780 |
Method and apparatus for performing sequential closed loop multiple input multiple output (MIMO)
In a communication system using closed loop multiple input/multiple output MIMO, beam forming information may be fed back from a receiver to a transmitter sequentially over a number of frames. The...
|
|
|
7609771 |
Maximum ratio transmission
An arrangement where a transmitter has a plurality of transmitting antennas that concurrently transmit the same symbol, and where the signal delivered to each transmitting antenna is weighted by a...
|
|
|
7609615 |
Method and apparatus for performing channel compensation and symbol demodulation for coherent demodulation in an OFDM system
A method and apparatus for performing channel compensation and symbol demodulation using an estimated channel impulse response during coherent demodulation of a received Orthogonal Frequency...
|
|
|
7606337 |
Enhancing signals
Described herein is a method of enhancing signals received by a receiver in a mobile telecommunications network. The method comprises correlating the received signals to produce a correlation and...
|
|
|
7606326 |
Transmission schemes for multi-antenna communication systems utilizing multi-carrier modulation
Pilot and data transmission schemes for multi-antenna communication systems utilizing multi-carrier modulation are provided. Subband multiplexing is used to avoid interference resulting from...
|
|
|
7606320 |
Apparatus and method for space-frequency block coding/decoding in a communication system
An apparatus and method for SFBC coding and decoding in a communication system using a plurality of (N t ) Tx antennas are provided. In a transmitter using N t transmit antennas, a pre-coder...
|
|
|
7606319 |
Method and detector for a novel channel quality indicator for space-time encoded MIMO spread spectrum systems in frequency selective channels
In a JE, spread spectrum communication MIMO system where a demultiplexed packet is transmitted over multiple streams, two versions of a single CQI are disclosed: generalized SNR or constrained...
|
|
|
7606318 |
Method of space-time encoding and decoding for frequency selective fading channel
The invention discloses a space-time encoding and decoding method for a frequency selective fading channel, comprising: an encoder takes two independent data fields of a time slot in input data as...
|
|
|
7603140 |
Method of phase sweep transmit diversity (PSTD) and apparatus for providing PSTD
In the method, a phase of at least one signal transmitted from a transmit antenna of a base station is shifted based on a sweeping frequency having a differentiating component.
|
|
|
7602855 |
Method and apparatus for singular value decomposition of a channel matrix
A method and apparatus for decomposing a channel matrix in a wireless communication system are disclosed. A channel matrix H is generated for channels between transmit antennas and receive...
|
|
|
7602852 |
Initial parameter estimation in OFDM systems
A coarse estimate of a location of an information carrying part of a symbol in a received signal in a telecommunication system is generated. This involves generating correlation values by...
|
|
|
7602837 |
Beamforming for non-collaborative, space division multiple access systems
A wireless communication system noncollaborative, multiple input, multiple output (MIMO) space division multiple access (SDMA) system determines subscriber station combining and weighting vectors...
|
|
|
7602810 |
Transmission of generic digital messages through a microprocessor monitoring circuit
Embodiments of the invention concern a method for transmitting digital messages through a microprocessor monitoring circuit of specific type and integrated to a microprocessor, each message...
|
|
|
7599444 |
Coding in a MIMO communication system
A method of receiving information includes receiving a vector of signal values for a transmitted codeword in antennas of a MIMO receiver array in each of a sequence of time slots. Each vector forms...
|
|
|
7599443 |
Method and apparatus to balance maximum information rate with quality of service in a MIMO system
In a wireless MIMO communication system, for N symbols of a frame of information, allocating N 1 symbols to a stronger eigen sub-channel and N 2 symbols to a weaker eigen sub-channel, where N 1...
|
|
|
7599420 |
System and method for distributed input distributed output wireless communications
A system and method are described for compensating for frequency and phase offsets in a multiple antenna system (MAS) with multi-user (MU) transmissions (“MU-MAS”). For example, a method...
|
|
|
7599419 |
Method and apparatus for use of space time trellis codes based on channel phase feedback
A method for multiple-input-multiple-output (MIMO) wireless communication comprises the steps of generating inner and outer codes based on channel state information available at a transmitter and...
|
|
|
7596181 |
Apparatus and method for frequency synchronization in OFDM system
A method and apparatus are provided for frequency synchronization in an Orthogonal Frequency Division Multiplexing (OFDM) system, wherein the method includes the steps of transmitting OFDM symbols...
|
|
|
7596168 |
Diversity receiving apparatus, controlling method of the same, and computer-readable medium containing program therefor
A diversity receiving apparatus receives first and second reception signals and is constituted by including one or more phase shifters that generate one or more third signals having phases...
|
|
|
7593489 |
Iterative STBICM MIMO receiver using group-wise demapping
A STBICM MIMO receiver includes a plurality of demappers for demapping a plurality of complex symbols transmitted by a STBICM MIMO transmitter. Each demapper is configured to have one or more...
|
|
|
7593481 |
CDMA, W-CDMA, 3rd generation interoperable modem format selectable (MFS) systems with GMSK modulated systems
Baseband signal processing network modulator, transmit amplifier and antenna systems for plurality of baseband signals and for providing cross-correlated in-phase and quadrature-phase processed and...
|
|
|
7593475 |
Space-time and/or space-frequency block coding using complex signal swapping
A method of space-time and/or space-frequency block encoding begins by receiving at least two complex signals, wherein each of the at least two complex signals includes a real component and an...
|
|
|
7590195 |
Reduced-complexity multiple-input multiple-output (MIMO) channel detection via sequential Monte Carlo
A detection system and method are disclosed which uses sequential Monte Carlo techniques in a multiple-input multiple-output system. The detection system and method samples a first and second...
|
|
|
7590191 |
Means for transmitting two signals on the same frequency at the same time for use in mobile and fixed applications
The invention describes a technique for reusing radio frequencies, i.e., transmitting two signals on the same frequency at the same time. A signal is transmitted on one frequency in one pole. A...
|
|
|
7590182 |
Method and apparatus for utilizing channel state information in a wireless communication system
Techniques for transmitting data from a transmitter unit to a receiver unit in a multiple-input multiple-output (MIMO) communication system. In one method, at the receiver unit, a number of signals...
|
|
|
7590166 |
Apparatus and method for canceling an interference signal in a mobile communication system using multiple antennas
An apparatus and a method for improving the performance of an error correction code in response to the influence of error propagation are disclosed. A receiver of a mobile communication system,...
|
|
|
7586992 |
Apparatus and method for channel estimation and cyclic prefix reconstruction in an OFDM-STBC mobile communication system
An apparatus and method for channel estimation and CP reconstruction in an OFDM-STBC mobile communication system are provided. An ISI canceller cancels ISI signal components from first and second...
|
|
|
7586881 |
MIMO wireless communication greenfield preamble formats
A method for multiple input multiple output wireless communication begins by determining protocols of wireless communication devices within the proximal region. The method continues by determining...
|
|
|
7583982 |
Method and apparatus to improve channel quality for use in wireless communications systems with multiple-input multiple-output (MIMO) antennas
A technique which improves SINR in a communication system utilizing MIMO antennas is described. Transmitter and receiver components use fixed transmit and receive beamforming matrices and variable...
|
|
|
7583939 |
Method and system for antenna selection in wireless networks
A method and system selects a subset of antennas from a set of antennas to transmit user data in a wireless communication system. The user data is transmitted during a first transmission time...
|
|
|
7583761 |
Channel estimation for wireless systems without matrix inversion
In various embodiments, techniques are provided to determine channel characteristics of various communication systems such as OFDM systems or systems using a plurality of transmit antennas by using...
|