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7623606 |
Decoding of bi-phase encoded data
A method for decoding bi-phase encoded data begins by interpreting a first bit boundary of a bit of the bi-phase encoded data to produce a first boundary value. The method continues by interpreting...
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7623597 |
Block codeword decoder with confidence indicator
A wireless transceiver ( 100 ) that produces soft decisions for received, block error correction encoded codewords and a confidence indicator signifying a likelihood of errors in the detected data....
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7623596 |
Methods and systems for estimating a channel response by applying bias to an initial channel estimate
A channel response may be estimated from training symbols that are received over a channel, by determining an initial channel estimate from the training symbols and applying bias to the initial...
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7623569 |
Apparatus and method for estimating interference and noise in a communication system
A method and apparatus for estimating interference and noise power in an orthogonal frequency division multiplexing/orthogonal frequency division multiple access/discrete multi-tone...
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RE41001 |
Communication system
At the transmitter side, carrier waves are modulated according to an input signal for producing relevant signal points in a signal space diagram. The input signal is divided into, two, first and...
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7620138 |
Apparatus for receiving parallel data and method thereof
A data reception apparatus adjusts a first clock signal and fetches the data signal in a data buffer, using a data signal in accordance with the adjustment clock signal in such a way that a set-up...
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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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7620127 |
High availability digital radio architecture
The present invention is a high availability digital radio architecture which includes an analog interface subsystem and a baseband digital processing subsystem. The analog interface subsystem...
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7620125 |
Frequency estimation apparatus and related method
A method of frequency estimation includes (a) receiving frequency correction channel (FCCH) data samples; (b) calculating an estimated frequency offset based on the received data samples; (c)...
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7619547 |
Serial-to-parallel converter circuit and liquid crystal display driving circuit
A serial-to-parallel converter circuit comprising: an m-bit serial data holding unit to be input with serial data whose input bit number is set to m or n (<m) bits within a transfer period and a...
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RE40978 |
Communication system
At the transmitter side, carrier waves are modulated according to an input signal for producing relevant signal points in a signal space diagram. The input signal is divided into, two, first and...
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7616726 |
Optical disk apparatus and PLL circuit
With the objective of providing a stable PLL circuit and improving readout performance of an optical disk apparatus equipped with PRML, using the PLL circuit, phase detectors are respectively...
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7616720 |
Multirate digital transceiver
A multirate digital transceiver in which, on reception, signals are simultaneously decimated and coarsely down converted in an iterative process to narrow down a received wideband to a desired...
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7616712 |
Systems and methods for detecting discontinuous transmission (DTX) using cyclic redundancy check results to modify preliminary DTX classification
A received information signal is decoded to obtain the received information and to produce at least one feature of the received information signal. The received information signal is preliminarily...
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7616711 |
Frequency domain filtering to improve channel estimation in multicarrier systems
A channel estimation system comprises a filtering component that selectively scales a plurality of carriers as a function of location of the plurality of carriers within a frequency band, wherein...
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7616709 |
Differential decoder followed by non-linear compensator
A receiver including a (differential-quadrature-) phase-shift-keying demodulator ( 4 ) and a differential detector ( 10 ) having a decoder ( 19 ), is provided with a non-linear compensator ( 20 )...
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7616700 |
Method and system for slicing a communication signal
A slicer can receive a communication signal having a level or amplitude that is between two discrete levels of a multilevel digital communication scheme. The slicer can compare the communication...
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7613256 |
Forward error correction in a distribution system
A multimedia distribution system is disclosed. The distribution system includes a transmitter unit that distributes content from a content provider to one or more wireless subscriber units. The...
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7613255 |
Method for estimating communication conditions affecting an UWB wireless link
The present invention relates to a method for transmitting data by means of at least one pulse sequence carried by a radio signal, in the course of which a power value representative of an amount...
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7609786 |
Channel estimation for a communication system using spectral estimation
Techniques for performing channel estimation in a multi-carrier system are described. A frequency response estimate is initially obtained for a wireless channel based on a narrowband pilot sent on...
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7609777 |
Maximum likelihood a posteriori probability detector
A communication device comprising an ML-APP detector coupled to at least two antennas. The ML-APP detector comprises at least one Hx unit coupled to at least one LLR unit. The Hx unit generates a...
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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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7606335 |
Signal pulse detection scheme for use in real-time spectrum analysis
A spectrum analysis engine (SAGE) that comprises a spectrum analyzer component, a signal detector component, a universal signal synchronizer component and a snapshot buffer component. The spectrum...
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7606334 |
Channel estimation using pilot symbols
A system for estimating the transfer function of a transmission channel such as the downlink channel in a CDMA system over which a pilot signal and a data signal are transmitted. The system...
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7606333 |
Method and device for frame detection and synchronizer
The IEEE 802.11a standard uses OFDM, where the transmission is divided into several orthogonal sub-carriers. Here, an algorithm is used for the frame detection; a simplified differentiator obtains...
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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...
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7606297 |
Method and system for creating an eye diagram using a binary data bit decision mechanism
Disclosed herein is a method that directs the components and signal detection path of a binary data bit decision mechanism used to obtain the bit error rate of the bit stream of an incoming or...
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7602863 |
Method and apparatus for providing iterative timing recovery
A method includes the steps of receiving a signal indicative of data bits, and performing per survivor processing-iterative timing recovery (PSP-ITR) on the received signal to generate...
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7602853 |
Method and apparatus for channel estimation
The invention relates to DVB-T system, and in particular, to a channel estimation method for OFDM symbols. A plurality of symbols are received to generate a pilot response. A finite impulse...
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7602317 |
Data encoding and decoding using Slepian-Wolf coded nested quantization to achieve Wyner-Ziv coding
A system and method for realizing a Wyner-Ziv encoder may involve the following steps: (a) apply nested quantization to input data from an information source in order to generate intermediate data;...
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7599453 |
Doppler spread estimation for OFDM systems
A Doppler spread value of a channel in an Orthogonal Frequency Division Multiplexing (OFDM) system is estimated, wherein the channel comprises a plurality of carrier frequencies. Estimating...
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7599451 |
Sample rate conversion module and applications thereof
A sample rate converter includes an upsampling module, a low pass filter, and a linear sample rate conversion module. The upsampling module is operably coupled up-sample a digital input signal...
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7599450 |
Pattern-dependent equalization and detection
A system for pattern dependent equalization has an equalizer bank and a detector. The equalizer bank has a plurality of equalizers, which are each tuned to a selected data pattern. The detector may...
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7594160 |
Apparatus and method for receiving signal in a communication system
Provided is an apparatus and method for receiving a signal in communication system. The apparatus and method includes generating a particular log-likelihood ratio (LLR) value by demapping an input...
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7593742 |
Received communication signal processing methods and components for wireless communication equipment
A wireless transmit receive unit (WTRU) and methods are used in a wireless communication system to process sampled received signals to establish and/or maintain wireless communications. A...
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7593490 |
Joint synchronizer and decoder
A joint synchronizer and decoder that implements two decision aided processes, which are referred to as “decision aided candidate selection” and “decision aided synchronization and...
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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...
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7593488 |
Method and apparatus for detection of signal without the aid of training sequence
Embodiments of a method and system for determining the presence or absence of a digital communication signal are disclosed. One embodiment of the inventive method comprises the steps of collecting...
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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...
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7590205 |
Receiver with sliding intermediate frequency (IF) architecture and programmable bandwidth and method
Embodiments of a multi-mode receiver, transmitter, and method are generally described herein. Other embodiments may be described and claimed. In some embodiments, a sliding IF architecture that...
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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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7590199 |
Hybrid frequency offset estimator
A hybrid carrier frequency offset estimator that uses data-aided and non-data-aided signal processing techniques to produce multiple candidates for the carrier frequency offset within a return...
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7590196 |
Chiral mixture detection system using double reference lock-in detector
The present invention provides a method, circuit and system for phase-sensitive detection and recovery of complex signals of interest using a double reference lock-in detector. A double reference...
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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...
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7590188 |
Channel estimation for block transmissions over time- and frequency-selective wireless fading channels
Techniques are described for channel estimation of block transmissions over time- and frequency-selective wireless fading channels. A wireless transmitter forms blocks of symbols that include at...
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7587211 |
Method and system for adaptive multi rate (AMR) and measurements downlink adaptation
Various aspects of a method and system for adaptive multi rate and measurements adaptation may include a processor that enables computation of at least one signal level measurement for at least one...
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7587004 |
Method for decoding data using windows of data
The present invention relates to a method for decoding data, said method using windows (WID) of input data. The invention is characterized in that it comprises for a current window the steps...
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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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7583763 |
Multi input multi output wireless communication reception method and apparatus
A Multi Input Multi Output (MIMO) Wireless Communication Reception Method and Apparatus are proposed whereby in a 2-way wireless communication system with scattering propagation channels, where...
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7583762 |
Reduced-complexity multiple-input, multiple-output detection
A wireless receiver detects signals generated with a multiple-input, multiple-output (MIMO) transmitter. The receiver applies maximum-likelihood detection (MLD) for soft-output signal detection,...
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