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本文提出并证明了一种群路ＦＤＭＡ／ＱＰＳＫ（ＳＣＰＳ／ＱＰＳＫ）信号全数字化整体解调的新方法，该方法根据信道构成特点和信号调制方式，将直接分路法和常规多相ＦＦＴ分离法相结合，构成了一种简化的等效多相ＦＦＴ分路方法，接着将输出的数字信号直接送到数字式解调器，实现了多载波信号的全数字化整体解调，其特点是软件和硬件结构简单、系统计算量小，且易于 ＤＳＰ实时实现，现已用该算法进行了 ３２路ＦＤＷＡ／ＱＰＳＫ信号整体解调的计算机仿真实验，结果表明该方法是可行的；目前已用最新数字信号处理器ＴＭＳ３２０Ｃ６２０１硬件板对此方法的关键技术进行了实时仿真．
This paper presents and proves a new method for global digital demodulation of FDMA / QPSK (SCPS / QPSK) signals. According to the characteristics of channel structure and signal modulation, this method combines the direct branch method with the conventional multiphase FFT method , Constitutes a simplified equivalent multi-phase FFT shunt method, and then the output digital signal directly to the digital demodulator to achieve a full digital multi-carrier signal demodulation, which is characterized by software and hardware structure Simple, small amount of system calculation, and easy to DSP real-time implementation, the algorithm has been used 32 FDWA / QPSK signal demodulation of the computer simulation results show that the method is feasible; has been the latest digital signal processor The TMS320C6201 hardware board real-time simulation of the key technologies of this method.