In this paper, we present a bit error rate (BER) analysis of a multicarrier spread spectrum (MC-SS) system that accounts for several non-ideal factors that exist in actual systems; specifically, channel estimation error, correlated subcarriers, and frequency selectivity over each subcarrier frequency band. The particular MC-SS system that is addressed makes use of filter banks to keep subcarrier bands non-overlapping. In this analysis, the time varying multipath channel is modeled using the wide-sense stationary uncorrelated scattering (WSSUS) channel model, and the channel is estimated using a pilot symbol assisted modulation (PSAM) method. Numerical results that demonstrate the accuracy of the developed theoretical results when applied to design transceivers for high frequency (HF) skywave communications show the usefulness of the developed theory in a practical case study.

中文翻译：

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重点关注高频通信的双色散信道中多载波扩频系统的性能分析

在本文中，我们提出了对多载波扩频（MC-SS）系统的误码率（BER）分析，该系统解释了实际系统中存在的几个非理想因素；具体而言，信道估计误差，相关的子载波和每个子载波频带上的频率选择性。所解决的特定MC-SS系统利用滤波器​​组来保持子载波频带不重叠。在此分析中，时变多径信道是使用广义静止不相关散射（WSSUS）信道模型建模的，而信道是使用导频符号辅助调制（PSAM）方法估算的。