摘要
针对传统MPSK信号载波频偏估计方法精度差的问题,提出了一种MPSK信号的高精度载波频偏估计算法,该算法采用同步头辅助,在数字传输系统中非常易于实现。将该算法与早期的几种频偏估计算法在性能上进行了对比,对比结果显示,算法估计精度很高,在信噪比低至0dB的情况下可接近于Cramer-Rao界。
We propose a new algorithm for carrier frequency estimation in M-ary phase shift keying（MPSK） transmissions. The algorithm is data-aided and clock-aided and has a feedforward structure that is easy to implement in digital form. Comparisons with earlier methods are discussed,the results indicate that ist estimation accuracy is high and it can close to the Cramer-Rao bound（CRB） for a signal-to-noise ratio（SNR）as low as 0 dB.
出处
《微型机与应用》
2011年第20期65-67,共3页
Microcomputer & Its Applications
