针对N进制正交扩频和MDPSK复合调制(N O rth-MDPSK),分析了单径慢衰落信道模型中带有频差时的误比特率。首先运用全概率定理和马尔可夫链,建立了性能分析的统一框架;在此框架下,推导了AW GN、瑞利衰落和N akagam i-m衰落信道中的误比特...针对N进制正交扩频和MDPSK复合调制(N O rth-MDPSK),分析了单径慢衰落信道模型中带有频差时的误比特率。首先运用全概率定理和马尔可夫链,建立了性能分析的统一框架;在此框架下,推导了AW GN、瑞利衰落和N akagam i-m衰落信道中的误比特率公式。数值结果表明,与单纯N O rth相比,N O rth-MDPSK以较低的性能损失代价,提供了更高的带宽效率。展开更多
This paper presents an improved algorithm for classification of M-Differential Phase-Shift Keying(MDPSK) signals based on eumulant. The feature proposed in the algorithm is invariant with respect to constellation scal...This paper presents an improved algorithm for classification of M-Differential Phase-Shift Keying(MDPSK) signals based on eumulant. The feature proposed in the algorithm is invariant with respect to constellation scale, rotation, the shift and the carrier frequency offset between transmitter and receiver.The invariant property is proved theoretically.Through computer simulation the performance is evaluated and the results show that the improved classification algorithm is better and valuable in practice.展开更多
文摘针对N进制正交扩频和MDPSK复合调制(N O rth-MDPSK),分析了单径慢衰落信道模型中带有频差时的误比特率。首先运用全概率定理和马尔可夫链,建立了性能分析的统一框架;在此框架下,推导了AW GN、瑞利衰落和N akagam i-m衰落信道中的误比特率公式。数值结果表明,与单纯N O rth相比,N O rth-MDPSK以较低的性能损失代价,提供了更高的带宽效率。
基金Supported by China TRAPOYT,863 Project(2001AA123031)National Natural Science Foundation of China(No.69872028)
文摘This paper presents an improved algorithm for classification of M-Differential Phase-Shift Keying(MDPSK) signals based on eumulant. The feature proposed in the algorithm is invariant with respect to constellation scale, rotation, the shift and the carrier frequency offset between transmitter and receiver.The invariant property is proved theoretically.Through computer simulation the performance is evaluated and the results show that the improved classification algorithm is better and valuable in practice.
