摘要
介绍一种利用计算机模拟移动无线通信中信道传输特性的方法．该方法主要对瑞利（Ｒａｙｌｅｉｇｈ）和莱斯（Ｒｉｃｅ）分布的非频率选择性衰落信道进行模拟．运用这种方法，研究了相移键控的调制信号（ＢＰＳＫ，ＱＰＳＫ和８ＰＳＫ）在不同莱斯衰落因子信道中的传输特性，分析了莱斯衰落因子和最大多谱勒频移ｆｄ对衰落裕度（ｆａｄｅｍａｒｇｉｎ）和误码限度（ｅｒｒｏｒｆｌｏｏｒ）的影响．对衰落信号的包络和相位以及二进制序列误码率的统计结果表明：模拟特性与理论分析较好地吻合．
A method for computer simulation of the channel propagation characteristics in mobile radio setups is described. It mainly simulates the Rayleigh-distributed and Rice-distributed non-frequency-selective fading channel. With this method are studied the channel propagation characteristics fo BPSK, QPSK and SPSK modulated signals in the channel having different Rice fading factor K. Fading margin and error floor affected by the Rice fading factor K and the maximum Doppler frequency shift fd are analyzed. According to the statistics of envelope and phase distributions of the fading signals and error rate of the binary sequence, close agreement is shown between the simulation and theoretical analysis.
出处
《北京理工大学学报》
EI
CAS
CSCD
1994年第3期299-304,共6页
Transactions of Beijing Institute of Technology
基金
国家自然科学基金
关键词
移动通信
衰落信道
计算机模拟
mobile communication
fading channels/Rayleigh fading
Rice fading
fading margin
error floor
