计算机应用研究2012，Vol.29Issue(8)：3131-3133,3136,4.DOI:10.3969/j.issn.1001-3695.2012.08.086
OFDM/OFDMA系统的导频干扰方案
Pilot jamming scheme against OFDM/OFDMA
解思瑞 1黄开枝 1吉江 1李志刚2
作者信息
- 1. 国家数字交换系统工程技术研究中心,郑州450002
- 2. 解放军信息工程大学,郑州450002
- 折叠
摘要
Abstract
The pilot nulling is an effective jamming scheme against OFDM/OFDMA. It drived the pilot energy to zero by using a jamming signal that was the ir-radian offset of the transmitted pilot tone value. But, because of the effect of the channel and the noise, the phase of the signal could hardly to set exactly, this would worsen the jamming effect. This paper analyzed the jamming effect when the jamming signal had phase deviation, deduced the distribution of the amplitude and the phase of the jammed signal, then there was the symbol error rate (SER) under the jamming. After simulation and analysis, there was a conclusion: when the jamming signal had phase deviation, the capability of the scheme to counteract the power decreased a-bout 30% , the capability on SER decreased about 10%. Finally, this paper brought forward a novel scheme based on distribution detection. The schema reduced the phase deviation of interference signal using the detection feedback, thereby enhancing the performance of interference.关键词
OFDM干扰/导频消除/相位偏差/分布式检测/误符号率Key words
OFDM jamming/pilot nulling/phase deviation/distribution detection/SER分类
信息技术与安全科学引用本文复制引用
解思瑞,黄开枝,吉江,李志刚..OFDM/OFDMA系统的导频干扰方案[J].计算机应用研究,2012,29(8):3131-3133,3136,4.
