Punctured pilots for OFDMA Communications

被引：0
|
作者：
Jung, Sung-Yoon [1 ]
Kim, Sunghwan [2 ]
机构：
[1] Yeungnam Univ, Dept EE, 214-1 Daedong, Gyeeongsan Si 712749, Gyeongsangbuk D, South Korea
[2] Univ Ulsan, Sch EE, Ulsan 680749, South Korea
来源：
2011 IEEE 54TH INTERNATIONAL MIDWEST SYMPOSIUM ON CIRCUITS AND SYSTEMS (MWSCAS) | 2011年
基金：
新加坡国家研究基金会;
关键词：
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
In this paper, we propose the punctured pilots for channel estimation in OFDMA systems. These are pilots additionally inserted, after puncturing the modulated OFDMA symbols, to enhance channel estimation performance, without lessening bandwidth efficiency. In addition, puncturing scheme of forward error correcting (FEC) codes, especially focused on LDPC codes, is also proposed to prevent the performance degradation due to the codeword bits loss caused by punctured OFDMA symbols. Simulation results show that the enhanced channel estimation induces a lower bit error rate (BER) in harsh channel environments.
引用
收藏
页数：4
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