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在扩频通信系统设计中,为了测试不同的扩频通信系统接收机的工作性能,经常需要改变其测试信号的参数以发射适合接收机测试使用的测试信号。通过对扩频信号产生原理的阐述,并结合Xilinx公司的Virtex-2和TI公司的TMS320C6416T硬件特点,实现了一种扩频序列可调,数据速率和码片速率可调的扩频信号和载波频率可调的的扩频信号发生器。在某数字波束形成系统接收机的测试实验中验证了这种扩频信号发生系统性能稳定可靠。
In the design of spread spectrum communication systems, in order to test the performance of different spread spectrum communication system receivers, it is often necessary to change the parameters of their test signals to transmit test signals suitable for receiver testing. Through the expatiation on the principle of the spread spectrum signal and the hardware features of Virtex-2 and TI’s TMS320C6416T from Xilinx, a spread spectrum sequence with adjustable spreading sequence, adjustable data rate and chip rate and carrier Frequency adjustable spread spectrum signal generator. In a digital beamforming system receiver test experiments verify that the spread spectrum signal system performance is stable and reliable.