瑞利-對數(shù)正態(tài)聯(lián)合衰落下多跳宏分集的性能分析
Performance Analysis of Multi-hop Macro-diversity in Rayleigh-Lognormal Composite Fading
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摘要: 基于多跳傳輸?shù)奶攸c(diǎn),提出了一種多跳宏分集。以3個基站構(gòu)成的六邊形宏分集為模型,分別在純陰影和聯(lián)合衰落信道下研究了上行鏈路最大比合并(MRC)的DPSK誤碼率。分析表明,新系統(tǒng)的性能要優(yōu)于傳統(tǒng)單跳宏分集系統(tǒng),多跳中繼能增強(qiáng)系統(tǒng)性能隨移動終端位置變化的魯棒性,對改善無線鏈路的可靠通信較有好處。
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關(guān)鍵詞:
- 多跳中繼傳輸; 多跳宏分集; 瑞利-對數(shù)正態(tài)聯(lián)合衰落
Abstract: Based on the concept of multi-hop transmission, a multi-hop macro-diversity is presented. In pure lognormal and Rayleigh-lognonnal composite fading channels, a hexagonal macro-diversity cellular system is investigated. The Maximum Ratio Combing (MRC) is considered for the uplink analysis of the Bit Error Rate (BER) for DPSK. Numerical results show that the performance of the new system outperforms that of the conventional single-hop macro-diversity system. The multi-hop relaying can enhance the robustness of system performance to the different location of one mobile station, and it is benefit to reliable communication of the radio link. -
WWRF/WG4. Relaying Subgroup White Paper: Relay-based deployment concepts for wireless and mobile broadband cellular radio. Version 0.1, Proc. of the 9th WWRF Meeting, Zurich,Switzerland. July 1-2, 2003.[2]胡健棟,程衛(wèi)軍,等.現(xiàn)代無線通信技術(shù).北京:機(jī)械工業(yè)出版社,2003:159.[3]裴小燕.CDMA系統(tǒng)中分集技術(shù)的研究.[博士論文],北京:北京郵電大學(xué),2001,7.[4]田輝.自組織移動通信網(wǎng)絡(luò)控制協(xié)議研究.[博士論文],北京:北京郵電大學(xué),2003,7.[5]Cheng Weijun, Hu Jiandong. Performance analysis of multi-user cooperative diversity systems in Rayleigh fading channels. Proc.of ISCIT2003, Thailand, Sept. 3-5, 2003:35 - 39.[6]Stuber M G L. Principles of Mobile Communication. 2nd Edition,Norwell, MA: Kluwer Academic Publishers, 2002:130 - 131.[7]程衛(wèi)軍,胡健棟.無線蜂窩網(wǎng)絡(luò)中一種新的多跳宏分集[J].通信學(xué)報,2003,24(11A):87-92.[8]Simon M K.[J].Alouini M S. Digital Communication over Fading Channels: A Unified Approach to Performance Analysis. New York: Wiley Sons.2000,:-[9]Hasna M O, Alouini M S. Performance analysis of two-hop relayed transmissions over Rayleigh fading channels [A]. Proc. of IEEE VTC, Vancouver, British Columbia, Canada, Sept. 2002:1992- 1996. -
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