摘要
为了利用多用户检测和并行干扰对消克服WCDMA系统的多址干扰和远近效应,文中建立了WCDMA系统模型并由此推导了一种用于WCDMA上行系统的并行干扰对消算法,并在E-DPDCH信道验证了算法的性能。将干扰用户发射信噪比固定为14dB,当两个用户到达同一吞吐量时,采用PIC有1.5dB的信噪比增益。最后针对基于CCSS平台的仿真结果提出了几种优化方案。
To overcome the multi-addess interference （MAI） and the far near effect in WCDMA systems by multiuser detection （MUD） and parallel interference cancellation（PIC）, aWCDMA system model is proposed, and from this a PIC algorithm based on this model and applied in WCDMAuplinks is derived. The performance of PIC is verified in E-DPDCH channel. Interference users transmission SNR is fixed to 14 dB, and when two users reach the same throughput, 1.5 dB SNR gain is obtained adopting PIC. Finally, by analyzing of the simulation results on CCSS, several optimized algorithms are given.
出处
《通信技术》
2009年第7期125-127,171,共4页
Communications Technology
