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時(shí)變衰落信道中WCDMA系統(tǒng)閉環(huán)發(fā)送分集的性能分析

楊馨 李晉 尤肖虎

楊馨, 李晉, 尤肖虎. 時(shí)變衰落信道中WCDMA系統(tǒng)閉環(huán)發(fā)送分集的性能分析[J]. 電子與信息學(xué)報(bào), 2005, 27(9): 1441-1445.
引用本文: 楊馨, 李晉, 尤肖虎. 時(shí)變衰落信道中WCDMA系統(tǒng)閉環(huán)發(fā)送分集的性能分析[J]. 電子與信息學(xué)報(bào), 2005, 27(9): 1441-1445.
Yang Xin, Li Jin, You XiaoHu. Performance Analysis of Closed Loop Transmit Diversity for WCDMA Systems in a Time Variant Fading Channel[J]. Journal of Electronics & Information Technology, 2005, 27(9): 1441-1445.
Citation: Yang Xin, Li Jin, You XiaoHu. Performance Analysis of Closed Loop Transmit Diversity for WCDMA Systems in a Time Variant Fading Channel[J]. Journal of Electronics & Information Technology, 2005, 27(9): 1441-1445.

時(shí)變衰落信道中WCDMA系統(tǒng)閉環(huán)發(fā)送分集的性能分析

Performance Analysis of Closed Loop Transmit Diversity for WCDMA Systems in a Time Variant Fading Channel

  • 摘要: 該文針對(duì)WCDMA標(biāo)準(zhǔn)中采用的閉環(huán)分集技術(shù),給出了RAKE接收算法模型及反饋的加權(quán)矢量算法,進(jìn)而分析了時(shí)變衰落信道中存在反饋鏈路延遲時(shí)閉環(huán)發(fā)送分集的接收性能,并與開環(huán)分集技術(shù)的接收性能進(jìn)行了比較,指出了開環(huán)和閉環(huán)發(fā)送分集技術(shù)適用的不同移動(dòng)環(huán)境.理論推導(dǎo)及仿真結(jié)果表明閉環(huán)發(fā)送分集在低速移動(dòng)和較低路徑信噪比環(huán)境下具有優(yōu)于開環(huán)分集的接收性能.
  • Tarokh V, Seshadri N, Calderbank R. Space-time codes for high data rate wireless communications: performance criterion and code construction[J].IEEE Trans. on Info. Theory.1998, 44(3):744-[2]3GPP, TSG RAN, WG1, Physical Layer Procedures (FDD), June,2000.[3]Derryberry R T, Gray S D, Ionescu D M, Mandyam G,Raghothaman B. Transmit diversity in 3G CDMA systems. IEEE Communications Magazine, 2002, 40(4): 68 - 75.[4]Hamalainen J, Wichman R. Closed-loop transmit diversity for FDD WCDMA systems. 34th Asilomar Conference on Signals,Systems and Computers, Pacific Grove, CA, USA, 29 Oct.-1 Nov.,2000, vol. 1: 111 - 115.[5]Da Silva M J, Taffin A, Lasaulce S, Buljore S. Closed loop transmit diversity enhancements for UMTS narrowband and wideband TD-CDMA. IEEE Veh. Technol. Conference, 2001.Spring, 2001, vol.3:1963 - 1967.[6]Nagaraj S, Huang Yih-Fang. Downlink transmit diversity:feedback efficiency and robustness. IEEE International Conference on Personal Wireless Communications, Hyderabad,India, 17-20 Dec., 2000: 14- 18.[7]Onggosanusi E N, Gatherer A, Dabak A G, Hosur S. Performance analysis of closed-loop transmit diversity in the presence of feedback delay[J].IEEE Trans. on Commun.2001, 49(9):1618-[8]Hwang Keun Chul, Lee Kwang Bok. Efficient weight vector representation for closed-loop transmit diversity. IEEE ICC 2002,New York, NY, USA, 2002, vol. 2:732 - 736.[9]Raghothaman B, Mandyam G, Derryberry R T. Performance of closed loop transmit diversity with feedback delay. 34th Asilomar Conference on Signals, Systems and Computers, Pacific Grove,CA, USA, 29 Oct.-1 Nov., 2000, vol.1: 102 - 105.[10]Hamalainen J, Wichman R. The effect of feedback delay to the closed-loop transmit diversity in FDD WCDMA. IEEE PIMRC2001, San Diego, CA, USA, 2001 vol.1: D-27 - D-31.[11]Papoulis A. Probability, Random Variables, and Stochastic Processes. New York: McGraw-Hill, Inc. 1991:86 - 124.[12]楊馨,董霄劍,尤肖虎.WCDMA系統(tǒng)發(fā)送分集技術(shù)的性能分析.電子學(xué)報(bào),2002,30(7):986-989.
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  • 收稿日期:  2004-04-02
  • 修回日期:  2004-11-08
  • 刊出日期:  2005-09-19

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