在时变频率选择性衰落信道下,针对叠加训练序列的正交频分复用系统,在接收端利用训练序列的一阶统计特性进行信道估计,分析了接收机的比特误码率性能.然后利用差错概率最小化准则,给出了优化的训练序列分离因子,计算机仿真结果验证了理论分析的有效性。
The bit error rate ( BER ) performance of orthogonal frequency-division multiplexing (OFDM) system with superimposed sequence is presented in time varying multi-path fading channel, which uses the first order statistics of the superimposed sequence. Based on the minimum error rat principle, the optimum sequence separation parameter is given. Finally, the computer simulation results validate the analysis.