US 8,751,899 B2 · Handling burst error events with interleaved Reed-Solomon (RS) codes

Abstract

Handling burst error events with interleaved Reed-Solomon (RS) codes. A received signal, that has undergone convolutional interleaving sometime before, is received from a burst noise affected communication channel. The signal undergoes convolutional deinterleaving and the codewords generated there from undergo appropriate successive cyclic shifting to arrange burst noise affected symbols of various codewords into at least some common symbol locations. For example, at least two codewords have burst noise affected symbols in common symbol locations. An ensemble decoder jointly decodes multiple codewords during a same time period (i.e., processes multiple codewords simultaneously). By processing multiple codewords simultaneously, the ensemble decoder has greater error correction capability than a decoder that processes a single codeword at a time.

Claims20

Dependent claims

An apparatus comprising:

a communication interface configured to receive a burst noise affected signal with a plurality of information bits encoded therein based on an low density parity check (LDPC) code;
a convolutional deinterleaver configured to deinterleave the signal to generate a first plurality of codewords;
a shift module configured to shift cyclically the first plurality of codewords to generate a second plurality of codewords, including a first LDPC codeword and a LDPC second codeword, wherein a first burst noise affected symbol in the first LDPC codeword in a common symbol location as a second burst noise affected symbol in the second LDPC codeword;
and
an ensemble decoder configured to decode jointly the first LDPC codeword and the second LDPC codeword to generate a plurality of estimates of the plurality of information bits.

2 more elements

Dependencies are inferred from the claim text.

Handling burst error events with interleaved Reed-Solomon (RS) codes

Life of this patent

Handling burst error events with interleaved Reed-Solomon (RS) codes

Life of this patent

Abstract

Claims20