computes the shortening-signal-to-noise ratio in dB,tail energy in dB and the effective channel impulse response-computes the shortening - signal-to-nois e ratio in dB. tail energy in dB and the effective channel impu lse response

ofdm自适应盲信道缩短算法（SAM算法法），对做信道缩短方面的朋友有一定的帮助！ -ofdm blind adaptive channel shortening algorithm (SAM algorithm method), will certainly help to shorten the terms of friends to do the channel!

OFDM系统通过在时域符号前插入大于信道冲击响应长度的循环前缀（CP）可以避免符号间干扰(ISI)和载波间干扰(ICI)。但是，过长CP会使得数据传输效率降低。可以采用最小均方误差（MMSE）信道缩短均衡技术来压缩信道冲击响应长度。-OFDM systems avoid inter-symbol interference (ISI) and inter-carrier interference (ICI) by inserting a cyclic prefix (CP) larger than