Power allocation and spectral efficiency of DS-CDMA systems in fading channels with fixed QoS-part II: Multiple-rate case

被引：0
作者：
IEEE [1 ]
不详 [2 ]
不详 [3 ]
机构：
[1] Qualcomm Inc., San Diego
[2] School of Engineering and Applied Science, Princeton University, Princeton
来源：
IEEE Trans. Wireless Commun. | 2006年 / 9卷 / 2529-2538期
基金：
美国国家科学基金会;
关键词：
Decoding order; Direct sequence code division multiple access (DS-CDMA); Minimum mean square error (MMSE); Multiuser detection; Spectral efficiency; Successive interference cancellation (SIC);
D O I：
10.1109/TWC.2006.1687776
中图分类号：
学科分类号：
摘要：
Power allocation results for equal-rate systems developed in Part I are extended to multiple-rate systems. For both systems with and without channel state information at the transmitter (CSIT), conditions for the optimality of successive interference cancellation combined with minimum mean square error multiuser detection (SIC+MMSE) are obtained. When CSIT is available, the optimal decoding order is discussed for optimal SIC+MMSE and two sub-optimal decoding schemes. Explicit expressions for the spectral efficiency parameters in the low or high energy regions are also obtained. © 2006 IEEE.
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页码：2529 / 2538
页数：9
相关论文
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