Intel Corporation

Arraycomm, Inc.

Veerendra Bhora

Tibor Boros

Raghavan Sudhakar

Pulakesh Roy

Kamal J Koshy

In general, in one aspect, the disclosure describes a unified simplified maximum likelihood detector to be utilized with multiple input multiple output (MIMO) receivers to estimate transmitted signals. The unified detector includes a common framework capable of being utilized for multiple detection modes and multiple MIMO configurations.

Unified multi-mode receiver detector

A method for encoding data is disclosed. The method can include receiving a first bit segment (K&#x2212;1 bits) from a bit stream, storing the first bit segment, initializing an encoder with the first bit segment, start encoding and transmitting from the Kbit to the end of the appended data stream, and appending the first bit segment (K&#x2212;1 bits) to the end of the data stream. The disclose arrangements can be similar to tail-biting methods different in that the initial bits are utilized to initialize the encoded as opposed to the tail or last bit as provided by tailbiting methods.

Arrangements for encoding and decoding digital data

Embodiments of an iterative decoder with early-exit condition detection and methods for decoding are generally described herein. Other embodiments may be described and claimed. In some embodiments, a first codeword is generated from decoded bits after one or more half-iterations of an iterative decoder, a second codeword from decoded bits after an additional half-iteration of the iterative decoder, and the first and second codewords are compared to determine whether the decoded bits are valid. In some embodiments, double or triple codeword matching is selected based on an estimated signal-to-noise ratio (SNR) and the modulation level.

Iterative decoder with early-exit condition detection and methods for decoding

According to an embodiment of the invention, a method and apparatus are described for error detection for multi-stream communication. Under an embodiment of the invention, a method for producing an error word for a data stream comprises computing an intermediate error word for each of a plurality of data sub-streams, the data stream being equivalent to a concatenation of the plurality of data sub-streams; and combining the intermediate error words to produce the error word for the data stream.

Error detection for multi-stream communications

In one embodiment, a Walsh-Hadamard decoder can have a hardware efficient Fast Hadamard Transform ('FHT') engine. In one embodiment, the FHT engine can include an input to receive an input sequence to be decoded into a Walsh-Hadamard codeword. The FHT engine can further include a controller to correlate the received input sequence with a plurality of Walsh-Hadamard codewords using two add/subtract modules. In one embodiment, the two add/subtract modules operate in parallel.

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Sunnyvale, CA, United States of America

Veerendra Bhora