DS-CDMA系統(tǒng)中結(jié)合多用戶檢測的功率控制研究
The Research of Power Control Combined with Multiuser Detection in DS-CDMA System
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摘要: 功率控制和多用戶檢測是CDMA移動通信中克服遠(yuǎn)近效應(yīng),抑制多址干擾(MAI)的兩項關(guān)鍵技術(shù)。該文提出了一種在DS-CDMA系統(tǒng)中綜合考慮功率控制和多用戶檢測的方案。該方案能更加有效地消除干擾信號,同時在滿足信干比(SIR)要求時,所有用戶發(fā)射總功率最小,收斂速度最快。
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關(guān)鍵詞:
- 功率控制; 多用戶檢測（MUD）; 串行干擾刪除
Abstract: Power control and multiuser detection are two ways to cope with Multiple Access Interference (MAI) and near-far effect. This paper proposed a new scheme for DS-CDMA system combined power control and multiuser detection. This scheme can effectively mitigate interference of other users, and minimize the total transmit power under the constraint that all the users achieve the requisition of Signal-to-Interference Ratio(SIR), also the convergence of the SIRs to the common target SIR rapidly. -
張賢達(dá),保錚.通信信號處理[M].北京:國防工業(yè)出版社,2000:420-482.[2]Proakis J G著,張力軍,張宗橙,鄭寶玉譯.數(shù)字通信(第三版)[M].北京:電子工業(yè)出版社,2000:404-436.[3]Varanasi M K, Das D. Fast stochastic power control algorithms for nonlinear multiuser receivers[J].IEEE Trans. on Commun.2002, 50(11):1817-[4]Yates R D. A framework for uplink power control in cellular radio systems [J].IEEE J. on Selected Areas in Communication.1995, 13(7):1341-[5]Zander J. Distributed cochannel interference control in cellular radio systems [J].IEEE Trans. on Veh. Technol.1992, 41(3):305-311[6]Ulukus S, Yates R D. Adaptive power control and MMSE interference suppression[J].Wireless Networks.1998, 4(6):489-[7]Agrawal A, Andrews J, Cioffi J, Meng T. Power control for successive interference cancellation with imperfect cancellation [J]. IEEE ICC, New York, May 2002:356 - 360. -
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