摘要
对选择性映射与部分序列传输在正交频分复用系统中的应用进行研究,提出一种改进算法,利用部分序列传输中交织分割运算量小的特点,结合交织分割与相邻分割,构造一种伪随机序列以降低系统的峰均比。链路级仿真实验结果表明伪随机序列算法能够有效降低系统峰均比,并且满足IEEE802.11g标准对谱掩膜的规定。
By studying the application of selected mapping and partial transmit sequence techniques in orthogonal frequency division multiplexing systems, a novel method is proposed. Taking the advantage of the interleaved partitioning＇s lower complexity in partial transmit sequence, and using the adjacent partition and the interleaved partition techniques, the proposed method can construct a pseudo random sequence whose peak-to-average power ratio（PAPR） is reduced. Link level-simulation results show that the transmitted signal in the proposed method has a better PAPR distribution and meets the demand of transmit spectrum mask defined in the IEEE 802.11g standard.
出处
《西安邮电学院学报》
2013年第2期66-69,共4页
Journal of Xi'an Institute of Posts and Telecommunications
基金
国家科技重大专项基金资助项目(2012ZX03001025-004)
关键词
正交频分复用(OFDM)
峰均比(PAPR)
部分序列传输(PTS)
伪随机算法
orthogonal frequency division multiplexing （OFDM）, peak-to-average power ratio （PAPR）, partial transmit sequence（PTS）, seudo random algorithm
