网格编码调制 8PSK 正交频分复用利用π/4移位的QPSK网格编码调制(Trellis coded modulation,TCM)技术,通过信号集进行扩展和相位差划分,提出了π/8移位的8PSK-OFDM技术.在维特比解码代数中,对连续接收到的符号(从第1个到L个相位差)可以使用新的分支度量值来解码.这样的滑动多符号检测(S1iding Multiple Symbol Detect...
Performance of frequency domain sub‐band diversity combination technique for wide‐band mobile radio reception: An application to OFDM (Orthogonal Frequen... We have investigated a sub-band space diversity technique and assessed its potential application to wide-band mobile radio reception. By ...
In this paper the 蟺/4-DQPSK, DQPSK, and D8PSK modulation techniques are simulated, compared and also the trade off between system capacity and system robustness is shown. The simulation results show that under certain limited conditions 蟺/4-DQPSK is the optimum modulation technique for OFDM ...