摘要
针对正交频分复用系统,提出一种利用的差分回归法降低峰均功率比。该方法先把信息伪随机化,在频域和时域上对OFDM符号进行处理。通过以时域为主、频域差分编码为补充,对采样值进行回归处理,来实现抑制峰均功率比的目的;此方法便于硬件电路实现,适用任何载波系统,对128载波系统,可以带来4dB的抑制效果,文中给出随机模拟、CCDF和系统性能BER仿真图。
The differential Recursive scheme was used to reduce peak-to-average power for orthogonal frequency division multiplexing （OFDM） systems. The pseudo-randomized modulating vector to the subcarrier series was differentially phase-encoded between successive components in frequency domain, while recursion manipulates several samples in time domain. Of course, it was hardware implementation was ease for each OFDM systems. For a system with 128 subcarriers, the scheme provides an improvement of 4rib with ease of hardware implementation. There were some charts which include Monte Carlo simulation, CCDF display and system parameter BER contrast.
出处
《通信学报》
EI
CSCD
北大核心
2009年第12期99-105,共7页
Journal on Communications
