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频域均衡直序码分多址(DS-CDMA)系统基于最小均方误差(MMSE)准则有两种检测技术:传统的将MMSE运用于每个载波的检测技术(PC-MMSE)和新型线性将MMSE运用于每个用户的检测技术(PU-MMSE)。文中在WiMaxSUI信道下对使用这两种检测技术的DS-CDMA系统进行计算机仿真。仿真结果表明,使用新型检测技术的DS-CDMA系统能获得比传统检测技术更好的BER(误比特率)性能。
The DS-CDMA system has two detection techniques based on the minimum mean square error (MMSE) criterion: the traditional method of applying MMSE to each carrier (PC-MMSE) and the new linear Apply MMSE to each user’s detection technology (PU-MMSE). In the paper, we use WiMaxSUI channel to simulate the DS-CDMA system using these two detection techniques. The simulation results show that the DS-CDMA system using the new detection technology can achieve better BER (Bit Error Rate) performance than the conventional detection technology.