软件无线电接收机是否能正确的解调接收信号，样值同步是需要解决的基本问题之一，其好坏将直接影响系统性能。

Sample synchronization is a basic problem whether Software Radio Receiver systems can demodulate the received signal correctly, it also affects the performance of the system.

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本文针对低轨卫星直接序列扩展频谱(DSSS)通信中的信号同步问题，提出了基于软件无线电平台的处理方法。

According to the signal synchronization of LEO's direct sequence spread spectrum (DSSS) communication, a method based on software radio platform was described.

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最后给出了一种用FPGA与DSP组成的硬件平台实现软件无线电接收机载波同步环路的方案。

Finally, the paper gives out a scheme of digitized carrier synchronization loop for software defined radio receiver which is based on the hardware platform composed of FPGA and DSP.

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