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Combined turbo decoding and turbo equalization techniques

  • US 9,191,246 B2
  • Filed: 03/06/2014
  • Issued: 11/17/2015
  • Est. Priority Date: 03/15/2013
  • Status: Active Grant
First Claim
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1. A method of performing combined turbo equalization and turbo decoding of a plurality of orthogonal frequency division multiplexing (OFDM) symbols in a communication receiver, at least partially implemented in hardware, the method comprising:

  • operating a first iterative loop to produce decision feedback equalized (DFE) symbols by;

    receiving a new symbol in a buffer;

    re-encoding, when available in the buffer, data from one or more previous symbols and cancelling inter-symbol interference;

    de-mapping constellations of an output of the inter-symbol interference cancellation operation;

    decoding a first or an inner component code; and

    performing an interleaving or de-interleaving operation; and

    operating a second iterative loop on the DFE symbols to produce decoded bits by decoding, until a last iteration is reached, the first or the inner component code; and

    decoding, until the last iteration is reached a second or an outer component code of the DFE symbols and an input from the decoding of the first or the inner component code; and

    producing, upon reaching the last iteration, decoded bits.

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