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Search - rayleigh MRC - List
[
Communication-Mobile
]
matlab
DL : 0
Proakis analytical curves for i.i.d. Rayleigh fading & MRC (equal SNRs)
Date
: 2025-12-25
Size
: 228kb
User
:
王勇
[
Communication-Mobile
]
Alamouti
DL : 0
主函数Alamouti(Nr,max_snr,max_err_symbol,symbol_per_frame) 调用函数QpskMapping(psudo_bit_sequence)--二进制数据到QPSK信号的变换 调用函数RayleighCH(Nr,Nt)--瑞利衰落信道模拟 仿真示例: Alamouti(1,12,20,24) 说明: 1.2根发射天线、1根接收天线 2.最高信噪比为12dB,即仿真范围为0dB到12dB 3.在每个信噪比条件下,误符号数超过20即停止该信噪比条件下的仿真 4.每一帧数据为24个QPSK符号 综合仿真函数SimAlamouti(max_snr,max_err_symbol,symbol_per_frame) 具有一根接收天线系统的SER性能与二根接收天线的系统SER性能比较 SimAlamouti(12,20,24) 参数说明: 1.max_err_symbol的取值直接影响了仿真的精度:取值越大,精度越高,误符号率曲线也更平滑;但需更长的仿真 时间 2.一般max_snr小于15dB,程序中snr为信号噪声功率比 3.本程序仿真时未考虑帧与帧之间,信道衰落系数的相关性,因此symbol_per_frame一定程度上表征了信道相关时 间的大小,即在symbol_per_frame个QPSK信号发送时间内,信道衰落系数是不变或缓变的,而在下一帧数据中, 信道衰落系数可以认为已变成另一值 4.本程序假定在接收端已通过信道估计获得信道衰落系数-ALAMOUTI performs Monte-Carlo simulation and estimates Bit Error Rate (BER) of Alamouti Scheme [1] over Rayleigh channel. The scheme presumes 2 transmit (Tx) and arbitrary number of receive (Rx) elements. If Rx=1 (one receive element) ALAMOUTI is transformed to the order 2 transmit diversity scheme with Maximum Ratio Combining (MRC). The modulation format is MPSK with arbitrary order M which can be controlled by user.
Date
: 2025-12-25
Size
: 199kb
User
:
chenyiren
[
Communication-Mobile
]
BPSKMRC
DL : 0
最大比合并(MRC)的分集合并程序;调制方式BPSK;瑞利信道(The diversity merging program of the maximum ratio combination (MRC); modulation mode BPSK; Rayleigh channel)
Date
: 2025-12-25
Size
: 28kb
User
:
`婕儿米
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