Combine non-binary LDPC codes with M-ary orthogonal spread spectrum modulation

Author

Huang, Yu-zhen ; Cheng, Yun-peng ; Zhang, Yu-ming ; Yu, Guo-hai ; Chen, Jin

Author_Institution

Inst. of Commun. Eng., PLA Univ. of Sci. & Tech, Nanjing, China

fYear

2010

fDate

21-23 Oct. 2010

Firstpage

1

Lastpage

4

Abstract

Low-density parity-check (LDPC) codes are playing more and more important roles in wireless communications due to their excellent error correction performance. In this paper, we study the combination of non-binary LDPC codes with M-ary orthogonal spread spectrum modulation for bandwidth efficient transmission over AWGN channel. Specifically, we investigate an algorithm for computing symbol soft metric based on Maximum a Posteriori Probability (MAP) criterion. To justify the performance of our proposed scheme, we made extensive simulations for various code rates and codeword lengths.

Keywords

AWGN channels; error correction codes; maximum likelihood estimation; orthogonal codes; parity check codes; probability; spread spectrum communication; AWGN channel; LDPC Codes; M-ary orthogonal spread spectrum modulation; MAP algorithm; error correction; low density parity check; maximum a posteriori probability; nonbinary codes; wireless communication; Decoding; Demodulation; Interleaved codes; Iterative decoding; Measurement; M-ary modulation; MAP algorithm; non-binary LDPC codes;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications and Signal Processing (WCSP), 2010 International Conference on

Conference_Location

Suzhou

Print_ISBN

978-1-4244-7556-8

Electronic_ISBN

978-1-4244-7554-4

Type

conf

DOI

10.1109/WCSP.2010.5633000

Filename

5633000