DocumentCode
715461
Title
Design of LDPC codes for the q-ary partial erasure channel
Author
Cohen, Rami ; Cassuto, Yuval
Author_Institution
Dept. of Electr. Eng., Technion - Israel Inst. of Technol., Haifa, Israel
fYear
2015
fDate
April 26 2015-May 1 2015
Firstpage
1
Lastpage
5
Abstract
In this paper, we discuss practical design of low-density parity-check (LDPC) codes for the q-ary partial erasure channel (QPEC). This channel is an extension of the binary erasure channel (BEC), where partial information on the output is available. We provide a linear programming (LP) optimization for the design of good degree distributions, and compare our code design results to codes obtained using an LP optimization formulated for the BEC. We show superior performance in terms of code rate and complexity, when designing an LDPC code for a desired decoding threshold.
Keywords
decoding; linear programming; parity check codes; BEC; LDPC codes; LP optimization; QPEC; binary erasure channel; code complexity; code rate; decoding threshold; good degree distributions; linear programming optimization; low-density parity-check codes; partial information; q-ary partial erasure channel; Decoding; Iterative decoding; Linear programming; Mathematical model; Optimization; Upper bound;
fLanguage
English
Publisher
ieee
Conference_Titel
Information Theory Workshop (ITW), 2015 IEEE
Conference_Location
Jerusalem
Print_ISBN
978-1-4799-5524-4
Type
conf
DOI
10.1109/ITW.2015.7133125
Filename
7133125
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