SPARSE GRAPH CODES ON A MULTI-DIMENSIONAL CDMA PLATFORM FOR APPLICATION IN MOBILE WIRELESS COMMUNICATION SYSTEMS

被引：0
|
作者：
Vlok, J. D. [1 ]
Linde, L. P. [2 ]
机构：
[1] Def Peace Safety & Secur Council Sci & Ind Res, Meiring Naude Rd Brummeria, Pretoria, South Africa
[2] Univ Pretoria, Dept Elect Elect & Comp Engn, ZA-0002 Pretoria, South Africa
来源：
SAIEE AFRICA RESEARCH JOURNAL | 2008年 / 99卷 / 01期
关键词：
Block Turbo codes (BTC); comple spreading seqences (CSS); channel modelling; log-likelihood ratio (LLR); low-density parity-check (LDPC) codes multi-layered modulation(MLM); Multi-dimentional (MD); repeat-accumulate (RA) codes; sparse graph chanel coding;
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：
This paper presents the uncoded multiuser error performance results of a novel super-orthogonal four dimensional code division multiple access communinication platform under additive white Gaussian noise and multipath fading channel condition. The communication platform employs root-of-unity filtered constant envelope complex spreading sequence with zero cross-correlation properties. The uncoded communication platform employs multi-layered-modulation to improve spectral efficiency compared with existing multi-level modulation techiques, and the coded system uses the multiple dimension to transmit redundancy to improve error performance. Three classes of sparse graph coding schemes are evaluated on the multi-dimentional communication platform. The channel codes include a three dimentional block-turbo-code with extended reed-Muller constituent codes, low-density parity-check codes and repeat-accunulate codes.
引用
收藏
页码：3 / 10
页数：8
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