空間-時間預(yù)RAKE系統(tǒng)
SPACE-TIME PRE-RAKE SYSTEM
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摘要: 本文提出了一種適用于TDD/DS-CDMA下行鏈路的空間-時間預(yù)RAKE系統(tǒng)。該系統(tǒng)能實現(xiàn)空間的選擇性發(fā)送和時間的預(yù)RAKE發(fā)送。然后給出了單用戶和多用戶情況下的該系統(tǒng)性能分析，并討論不同信道參數(shù)(角度擴散，Doppler頻率和突發(fā)幀長等)對系統(tǒng)性能的影響。Abstract: This paper proposes a space-time pre-RAKE system for the downlink in TDD/DS-CDMA. The system realizes space-selective transmission and temporal pre-RAKE. Performance analysis in single- and multi-user environment is presented and the relation between system performance and channel parameters (angle spread, Doppler frequency and burst frame size) is discussed.
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Esmailadeh R, Nakagawa M. Pre-RAKE diversity combination for direct sequence spread spectrum mobile communications systems, IEICE Trans. on Communication, 1993, E76-B(8):1008 1015.[2]Esmailadeh R, Sourour E, Nakagawa M. Pre-rake diversity combining in time division duplex CDMA mobile communications, IEEE PIMRC95, Toronto, Canada: 1995.[3]Turin G L. Introduction to spread-spectrum antimultipath techniques and their application to urban digital radio, Proc[J].IEEE.1980, 68(3):328-353[4]Thompson J S, Grant P M, Mulgrew B. Smart antenna arrays for CDMA systems, IEEE Personal Commum., 1996, 3(10): 16-25.[5]Pursley M B, Sarwate D V, Stark W E. Error probability for direct-sequence spread-spectrum multiple-access communications-Part I: Upper and lower bounds, IEEE Trans. on Commun.,1982, COM-30(5): 975-984.[6]Naguid A F. Adaptive antennas for CDMA wireless networks: Ph. D dissertation. Standford: Stanford Univ., 1996, Aug. -
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