采用LS 和MMSE算法对OFDM系统进行信道估计,很不错-Using LS and MMSE algorithm for channel estimation, the OFDM system is very good

在信道不完美估计状况下,空频分组码在ofdm系统中的性能分析-Under the condition of imperfect channel estimation, space-frequency block codes in ofdm system performance analysis