Performance Enhancement of MC-CDMA System Using LDPC Codes

被引：0

作者：

Rasadurai, K. ^{[1
]}

Kumar, Parvathy S. ^{[1
]}

Kumaratharan, N. ^{[1
]}

机构：

[1] Sri Venkateswara Coll Engn, Dept Informat Technol, Madras 602105, Tamil Nadu, India

来源：

2013 IEEE CONFERENCE ON INFORMATION AND COMMUNICATION TECHNOLOGIES (ICT 2013) | 2013年

关键词：

MC-CDMA; LDPC code; Sum-product algorithm; Belief-propagation algorithm; Random LDPC codes; QC-LDPC codes; AVERAGE POWER RATIO; PEAK; PAPR;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A turbo block code (TBC) technique for improving the performance of a multi-carrier code division multiple access (MC-CDMA) system in terms of bit error rate (BER) is proposed in this paper. The objective of this work is to develop a coding scheme that generates low BER code-words. By implementing a time domain TBC, designed using powerful low density parity check (LDPC) code, the BER performance of MC-CDMA system is improved and the same is proved through simulation. Two types of LDPC codes, viz. random LDPC codes and quasi cyclic (QC) LDPC codes are analyzed. These codes also have error correction capability along with high performance efficiency in terms of BER. In addition a decoding algorithm with moderate decoding complexity and with feasible soft output generation is also proposed for each LDPC code.

引用

页码：78 / 82

页数：5

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