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本文运用Matlab数学仿真平台,建立了码分多址仿真器模拟简单的CDMA通信链路,做了下行信道的仿真。将误码率作为了扩频处理增益干扰源个数、功率—延时曲线和接收器输入端信噪比的函数,使用离散信道模型计算误码率(BER),将结果与使用波形信道模型获得的结果作比较。实现了用码分多址(CDMA)通信系统下行信道的仿真。
In this paper, matlab mathematical simulation platform is used to establish a code division multiple access simulator to simulate a simple CDMA communication link and to simulate the downlink channel. The bit error rate is used as a function of the number of interferers, the power-delay curve, and the signal-to-noise ratio at the input of the spread spectrum processing spread spectrum. The discrete-channel model is used to calculate the bit error rate (BER) The results obtained for comparison. Realization of the downlink channel simulation with code division multiple access (CDMA) communication system.