A new wireless access scheme: Novel punctured LDPC coded ultra-wideband system

被引：0

作者：

Chen, Fangni ^{[1
]}

Li, Shiju ^{[1
]}

Wang, Yanbo ^{[1
]}

机构：

[1] Zhejiang Univ, Dept ISEE, Hangzhou 310027, Peoples R China

来源：

2007 IEEE 65TH VEHICULAR TECHNOLOGY CONFERENCE, VOLS 1-6 | 2007年

关键词：

ultra-wideband; multiband-OFDM; LDPC; puncture;

D O I：

10.1109/VETECS.2007.617

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：

Ultra-wideband (UWB) technology has attracted much attention in high speed indoor wireless communications. UWB communications have transmitted power limitations according to FCC regulation. To face this drawback, while still maintaining significant error correction capabilities, we propose a novel punctured low-density parity-check (LDPC) coding scheme for multiband OFDM (Orthogonal Frequency Division Multiplexing) UWB systems in this paper. Differently from the randomly puncture coding, we puncture the variable nodes on their degrees. We fix the target SNR threshold of the punctured code and optimize (maximize) the puncturing fraction for that threshold. From our analysis and numerical results, we find this new scheme give a significant performance gain compared with the randomly puncture scheme.

引用

页码：3011 / 3015

页数：5

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