CDMA系统中的下行信道估计与功率控制

The 57th IEEE Semiannual Vehicular Technology Conference, 2003. VTC 2003-Spring. Pub Date : 2003-04-22 DOI:10.1109/VETECS.2003.1208786

Hoon Kim, Jayong Koo, Keunyoung Kim, Youngnam Han

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引用次数: 0

摘要

在无线通信系统中，信道估计不仅是相干解调的必要条件，也是更高层资源利用的必要条件。在WCDMA/FDD(宽带码分多址频分双工)中，下行信道估计可以在CPICH(公共导频信道)和DPCCH(专用物理控制信道)中进行。考虑到CPICH和DPCCH在不同移动站位置下的链路质量差异，提出了使用这两种信道的估计方案，并从均方误差(MSE)方面对其性能进行了比较。在性能评估中还研究了功率控制对DPCCH信道估计的影响。

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Downlink channel estimation and power control in CDMA systems

In wireless communication systems, channel estimation is required not only for the coherent demodulation but also for the higher layer resource utilization. In WCDMA/FDD (wideband code division multiple access frequency division duplexing), downlink channel estimation can be performed in both CPICH (common pilot channel) and DPCCH (dedicated physical control channel). In this paper, considering the different link quality between CPICH and DPCCH according to the location of a mobile station (MS), estimation schemes that use both channels are suggested and their performances are compared in terms of mean square error (MSE). Power control effect on DPCCH channel estimation is also investigated in the performance evaluation.

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The 57th IEEE Semiannual Vehicular Technology Conference, 2003. VTC 2003-Spring.

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