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7639731 |
Carrier frequency estimation via symbol rate estimation
A receiver for carrier frequency estimation via symbol rate estimation in the presence of carrier frequency error for use in signal acquisition and signal demodulation of spread-spectrum chips...
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7639758 |
Blind detection of BPSK signals in a multi-user environment
The present invention relates to a system and method for the blind detection of BPSK signals in a multi-user environment. More particularly, the present invention provides a system and a method for...
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7636384 |
Method for detecting the orthogonal code CDMA signal
The present invention discloses a method for detecting orthogonal code CDMA signal implemented mainly through the following steps: estimating the total power of interference to the multi-path...
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7634246 |
Method and system for blocker attenuation using multiple receive antennas
Methods and systems for blocker attenuation using multiple receive antennas are disclosed. Aspects of one method may include receiving wideband signals multi-antenna receiver. The receiver may...
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7634235 |
Method and apparatus to improve closed loop transmit diversity modes performance via interference suppression in a WCDMA network equipped with a rake receiver
Methods and systems for processing signals in a wireless communication system are disclosed. Aspects of the method may include calculating at a receiver, a plurality of...
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7634030 |
Data transmission apparatus for DS/CDMA system equipped with MIMO antenna system
A transmission apparatus for a DS/CDMA system including a multiple-input multiple output MIMO antenna system is disclosed. The apparatus includes a transmitter for transmitting data by applying a...
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7633995 |
System and method for receiving spread spectrum encoded bursts using a common spreading code
A technique for receiving multiple spread spectrum bursts is disclosed. Each spread spectrum burst is encoded with a common spreading code and may include an individual message and unique signal...
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7630427 |
Systems, methods, and apparatus for establishing finger lock state
Embodiments include a method of signal processing in which each of a set of individual estimates of a transmitted symbol is added to a combined symbol estimate based on a relation between a signal...
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7627021 |
Interference canceling CDMA mobile station receiver
A receiver that provides interference cancellation in conjunction with RAKE processing. Signal parameters corresponding to each of a plurality of fingers corresponding to RAKE processing are...
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7623603 |
Intersymbol interference mitigation
Embodiments of the present invention provide for computing spatial covariances of intersymbol interference (ISI) and using the computed spatial covariances for ISI mitigation. Other embodiments may...
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7623566 |
Method and apparatus for demodulating signals processed in a transmit diversity mode
Demodulator architectures for processing a received signal in a wireless communications system. The demodulator includes a number of correlators coupled to a combiner. Each correlator typically...
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RE40986 |
Channel simulator for mobile systems
A device and a method at a mobile communication system which provide a flexible and realistic way of emulating the time dispersive qualities and the broadband frequency correlation qualities of a...
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7620099 |
WCDMA terminal baseband processing module having multi-path scanner module
A baseband processing module according to the present invention includes a multi-path scanner module. The multi-path scanner module is operable to receive timing and scrambling code information...
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7620128 |
Minimum mean squared error approach to interference cancellation and maximum likelihood decoding of space-time block codes
Block-encoded transmissions of a multi-antenna terminal unit are effectively detected in the presence of co-channel interfering transmissions when the base station has a plurality of antennas, and...
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7620097 |
Communications module, device, and method for implementing a system acquisition function
A communications module, device and corresponding method for facilitating PN code searching. The module and device have a PN sequence generator configurable to generate a plurality of PN sequences....
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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...
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7616609 |
Apparatus, and associated method, for selecting codes of a code set for coding data communicated during operation of multi-access communication system
Apparatus, and an associated method, for designing codes to be used to code data that is communicated in a multi-access communication system. A selected code is designed, based upon an initial...
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7613228 |
M-Algorithm multiuser detector with correlation based pruning
A multiuser detector system with correlation based pruning including a parameter estimation module adapted to receive complex signals, and to produce estimated signature waveforms for each of K...
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7613230 |
Method of processing a signal by a radio receiver and radio receiver for the implementation of the method
In a spread spectrum digital radio communication receiver, a propagation profile of a propagation channel between a sender and the receiver, including at least one propagation path associated with...
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7613158 |
Method of quadrature spreading
The invention provides a method of quadrature spreading suited for use in a software implementation of a code division multiple access communication (CDMA) system. The method includes providing for...
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7613231 |
Apparatus and method for detecting code of direct sequence spread spectrum signal
Provided is an apparatus and method for detecting a code of a direct sequence spread spectrum signal obtained by spreading data in a direct sequence spread spectrum method with a predetermined code...
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7609754 |
Method and apparatus for received communication signal processing
A method of processing a received communication signal comprises calculating a traffic-to-pilot scaling factor by relating data correlations determined from despread traffic values obtained from...
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7609750 |
Segment-wise channel equalization based data estimation
Data is estimated of a plurality of received spread spectrum signals by a wireless communication apparatus. The plurality of received communications are received in a shared spectrum. The received...
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7606293 |
Bidirectional turbo ISI canceller-based DSSS receiver for high-speed wireless LAN
A bidirectional turbo ISI canceller cancels precursor-ISI as well as postcursor-ISI in a received signal without incorporating a multiplicative feedforward equalization filter. This is accomplished...
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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...
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7606295 |
Generalized rake receiver for wireless communication
The present invention is related to a generalized rake receiver for a wireless communication system. The rake receiver comprises a plurality of finger correlators and a plurality of escort...
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7606296 |
Decoding method and apparatus
A decoder comprises an equalizer that receives a modulated signal comprising a plurality of symbols including a first symbol defined by a first number of chips. A subsymbol processor that generates...
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7606294 |
Channel quality estimation method and receiving apparatus
Channel quality can be detected accurately in a wireless transmission system such as an HSDPA method. In the case of estimating a channel quality of a signal transmitted by a Code Division...
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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...
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7602838 |
Linear turbo equalization using despread values
A linear turbo-equalizer for use in a CDMA receiver equalizes a despread received signal (rather than the spread received signal) to suppress self-interference resulting from coupling between...
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7602839 |
Chip blanking and processing in SCDMA to mitigate impulse and burst noise and/or distortion
A system for mitigating impairment in a communication system includes a delay block, a signal level block, a moving average window block, an impulse noise detection block, and a combiner. The delay...
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7602836 |
Receiver
Disclosed is a receiver for achieving optimum power consumption and optimum reception performance according to use, purpose, and required performance. A control circuit calculates an evaluation...
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7599424 |
Antenna diversity technique for wireless communication
A receiver includes a demodulator that receives data packets each having a preamble and that generates spreading codewords by correlating a spreading code with the preambles of the data packets. A...
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7599344 |
Method and apparatus for reducing multi-user processing in wireless communication systems
A method and apparatus is disclosed for reducing multi-user processing at the receiver in wireless communication systems. Detected codes are grouped according to channel impulse response and a...
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7599423 |
Successive interference canceling for CDMA
Successive interference canceling for CDMA. ICI may result from a signal's multi-path effects, or by filtering/suppression of some of the component energy of the signaling waveforms. Energy...
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7596172 |
Rake receiver in mobile communication system and control method therefor
Disclosed is a rake receiver in a mobile communication system and a control method therefor which receives signals transmitted from a base transceiver subsystem through multiple paths. The rake...
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7593492 |
Combinational hybrid turbo-MUD
A high quality real-time Turbo-Mud processing system that chooses between a high complexity multi-user detectors that results in better estimates of the bit streams and computationally low...
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7593357 |
Transmit processing using receiver functions
Data is to be transmitted in a code division multiple access communication system. A channel response is provided as a channel response matrix H approximating a channel that the data will...
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7590169 |
Multipath interference reduction on pilot estimation with legacy system interoperability
System, base station and method for supporting frequency domain equalization for frequency domain equalization-capable mobile stations and supporting improved channel estimation for both time...
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7590200 |
Receiver, a transmitter, a radio communication system and a channel estimation method
A radio communication system including a transmitter and a receiver ( 100 ) for transmitting MIMO channel signals is provided. The transmitter comprises a pilot signal insertion controller ( 93 )...
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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,...
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7590202 |
Reduced-complexity antenna system using multiplexed receive chain processing
A method and associated system for processing a plurality of replicas of a signal in a signal processing chain, the method includes receiving each of the plurality of replicas of the signal at one...
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7590167 |
Method and apparatus for QAM demodulation in a generalized rake receiver
A wireless communication device includes a Generalized RAKE (G-RAKE) receiver circuit that is configured to determine a traffic-to-pilot gain scaling parameter as part of the impairment correlation...
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7586975 |
Code tracking apparatus and method under a multi-path environment in a DS-CDMA communication system
Disclosed is a code tracking apparatus and method under a multi-path environment in a DS-CDMA communication system. Through the steps of calculating fast path energy on a first path signal by...
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7586979 |
Method for transmitting signals using antenna diversity, for instance in mobile communication systems, transmitter, receiver and computer program product therefor
Encoded digital symbols are transmitted via a first pair of antennas and at least one second pair of antennas. The sets of symbols used for the transmission via the second pair of antennas are...
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7586981 |
Apparatus and method for receiving data in a mobile communication system using an adaptive antenna array scheme
A mobile communication system receives a reception signal, and determines a first error value by using a first scheme, and a second error value by using a second scheme, and determines a first...
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7586980 |
Apparatus for coherent combining type demodulation in communication system and method thereof
Disclosed is an apparatus for coherent combining type demodulation and method thereof, in which a multi-path reception signal is demodulated by a coherent combining method in case that a...
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7586976 |
Initial ranging detection for OFDMA systems
An initial ranging detection for an orthogonal frequency division multiple access (OFDMA) wireless communication system entails removing data sub-carriers from samples of an OFDMA signal in order...
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7583766 |
System, and associated method, for utilizing block BLAST with PPIC in a MIMO multicode MC-CDMA system
A method for reducing interference in a MIMO MultiCode MC-CDMA system is disclosed wherein a BLAST algorithm is implemented over one block of correlation reception data y i and estimation channel...
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7583769 |
Operating GPS receivers in GPS-adverse environment
A system for operating a GPS receiver in a GPS-adverse environment includes a plurality of GPS receivers, a plurality of remote sensor interfaces (RSIs), and a computer management system. The GPS...
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