如何从接收到的信号恢复出发送信号，涉及到频率分集接收和均衡。
How to retrieve transmitted signals from received signals concerned with frequency diversity and equalization.
针对低莱斯因子信道中衰落和码间干扰的影响，提出了带内三重频率分集接收实现方式，给出了采用带内三重频率分集的调制器和解调器的原理框图。
For the influence of fading and ISI on low Rice factor channel, the system adopting diversity technology is presented, and the schematic diagram of the modem adopting diversity technology is given.
因此在频率选择性衰落信道中，采用分集接收可以改善系统的捕获性能。
Therefore, system acquisition performance can be improved if diversity receiver is adopted for the frequency-selective fading channel.
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