Lsi Corporation

Radwin Ltd.

Moshe Bukris

Shai Kalfon

Eliahou Arviv

Daniel Briker

Gennady Zilberman

Gil Naveh

Yair Amitay

Amnon Tal

Matty Levanda

An apparatus comprising a decoder circuit and a memory. The decoder circuit may be configured to generate a single address signal to read a first parity data signal, a second parity data signal and read and/or write systematic information data, a first a-priori-information signal and a second a-priori-information signal. The decoder circuit (i) reads the first parity data signal, the systematic information data and the first a-priori-information during even half-iterations of a decoding operation and (ii) reads the second parity data, the systematic information data and the second a-priori-information during odd half-iterations of the decoding operation. The memory may be configured to store the systematic information data and the first and second a-priori-information signals such that each are accessible by the single address signal.

Multi-processing architecture for an LTE turbo decoder (TD)

Described embodiments provide a wideband code division multiple access (W-CDMA) system that employs a rate matching rule having a modified puncturing algorithm. The modified puncturing algorithm defines the input variables of the rate matching rule in a manner that provides for identification of relations between non-punctured data bit position addresses in the output data stream through an iterative process, from which absolute bit position addresses of non-punctured output bits might then be generated. A counter, in accordance with instruction generated by a processor or state machine, for example, might implement the modified puncturing algorithm on an input string of bits to provide an output string of bits based on the absolute bit position addresses of non-punctured output bits, thereby providing for rate matching in the communications channel.

Rate matching for wideband code division multiple access

A method of detecting received data in a communication system includes the steps of: performing a QR decomposition on a received input vector as a function of one or more characteristics of a communication channel over which the input vector was transmitted; generating a subset of best symbol candidates from a symbol constellation by comparing an input sample (corresponding to an element of the input vector) with one or more prescribed thresholds; identifying at least one symbol satisfying prescribed minimum Euclidian distance criteria among multiple ambiguity symbols in the subset of best symbol candidates; and generating a subset of best symbols including a prescribed number of symbols from the symbol constellation determined to be closest to the input sample. The subset of best symbols is used in a subsequent iteration of the steps of generating the subset of best symbol candidates and identifying at least one symbol satisfying the prescribed minimum Euclidian distance criteria.

[object Object]

An apparatus including a first circuit and a second circuit. The first circuit may be configured to store a block of data values arranged in a first order. The first circuit may be further configured to present a plurality of the data values in parallel in response to a plurality of address signals, where the data values are presented in a second order. The second circuit may be configured to generate the plurality of address signals in response to a first signal, a second signal and a third signal. The second circuit generally includes an even number of address generators configured to generate the plurality of address signals in parallel.

Simplified parallel address-generation for interleaver

Terminal transmission method and the received signal model are used to develop two methods that estimate the starting time vicinity associated with a random access channel (RACH). First of said methods, called I *Q RACH starting time vicinity estimation (STVE), multiplies the I and Q branches of a sample and exacts the starting time of a preamble signal from the peak output of the phase metrics expression (for both even and odd periodicity). The second method, called (I &plus;jQ ) RACH STVE, performs a square operation on the received complex signal and calculates the peak output of the corresponding phase metric to extract the exact starting time of a preamble signal. Compliance with the standard of the 3 generation for cellular systems is also described whereby the timing is synchronized, the uncertainty of the preamble phase (at the base station) is minimized, and the complexity of the RACH receiver is significantly reduced

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Rishon Lezion, Israel

Moshe Bukris