OFDM中PTS副信息盲检测方法  

Blind PTS receiver for PAPR reduction in OFDM systems

作　　者：刘金云[1] 杨霖[1] 李少谦[1] 

机构地区：[1]电子科技大学通信抗干扰技术国家级重点实验室,成都610054

出　　处：《中国科技论文在线》2011年第10期737-742,共6页

基　　金：国家自然科学基金资助项目(61007188);高等学校博士学科点专项科研基金资助项目(2010018520007)

摘　　要：提出一种新盲检测算法,在发射信号中加入了参考符号,接收端利用参考符号对发射信号的平移,正确地判断出每个子块的相位旋转因子,进而无失真地恢复出发射信号,同时不需要发射边带副信息。与传统的无边带信息传输降低正交频分复用(OFDM)信号的峰均功率比(PAPR)相比,新算法不仅提高了频谱的利用率,而且对于OFDM信号的峰均功率比和比特错误率性能并无多大的影响。Partial transmit sequence （PTS） scheme aims to reduce the peak-to-average power ratio （PAPR） of orthogonalfrequency division multiplexing （OFDM） signals, but the side information beating phase rotation factors for OFDM symbol recovery occupies a part of spectral resources. The basic strategy is to insert the reference symbols onto the transmitted data, the phase rotation factors of each sub-block can be judged correctly according to the real part of received signals, and then the transmitted signals can be recovered without distortion. At the same time, there is no side information needed to be transmitted. Compared with the conventional PAPR reduction of OFDM signals without side information transmission, not only does the proposed method in this paper maintain the similar PAPR reduction performance and bit error ratio performance, but also increases the efficiency of spectral utility.

关 键 词：峰均功率比 部分传输序列 相位因子 比特错误率 边带信息检测错误概率 

分 类 号：TN919.3[电子电信—通信与信息系统]