【摘要】 针对OFDM系统的无线信道中非整数倍采样间隔多径时延的LS信道估计性能及其误差对系统误码性能的影响进行了理论分析和仿真实验。结果表明:LS的信道估计误差功率和OFDM系统的误码性能与无线信道中多径时延是否为整数倍无关,只与信道噪声功率强相关,即能量泄漏并没有带来文献指出的系统性能恶化。更多还原

【Abstract】 Effect of non-sample-spaced multipath on LS channel estimation and that on BER performance of OFDM system was studied. Theoretical analysis and simulation results showed that relative error of LS channel estimation is almost the same as signal-to-noise ratio of the channel and BER performance does not degrade when non-sample-spaced multipath exists, i.e., energy leakage due to non-sample-spaced path does not degrade OFDM system performances.更多还原