Presentation 2002/1/4
Experiments on Rake Path Diversity Effect in Coherent Adaptive Antenna Array Diversity Receiver Employing Receiver Antenna Weight Generation Algorithm Common to All Paths
Hidekazu TAOKA, Kenichi HIGUCHI, Tauisuke IHARA, Mamoru SAWAHASHI,
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Abstract(in English) This paper investigates the Rake path diversity effect of a coherent adaptive antenna array diversity (CAAAD) receiver employing receiver antenna-weight generation algorithm that is common to all paths for Rake combining based on laboratory experiments using multipath fading simulators.The experimental results elucidate that as the number of paths is increased from L=1 to 2 and 4,the required transmit E_b/N._o for the average block error rate (BLER) of 10^<-2> is decreased by approximately 1.3 (0.5) dB and 1.8 (1.0) dB, respectively, with 8 (12) antennas owing to the increasing Rake path diversity effect (3-user environment, the ratio of the target E_b./I_0. of the desired to that of the interfering users is ΔE_b/I0 =-12 dB). We also clarify that when the angle spread among paths is α=+/- 5degrees for L=2 and 4,the improvement in the required average transmit E_b/N_0 by increasing the number of antennas becyond 10 is small.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Adaptive antenna array / Interference suppression / Rake path diversity
Paper # 2001-DSP-178,2001-SAT-136,2001-RCS-236
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Committee SAT
Conference Date 2002/1/4(1days)
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Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Experiments on Rake Path Diversity Effect in Coherent Adaptive Antenna Array Diversity Receiver Employing Receiver Antenna Weight Generation Algorithm Common to All Paths
Sub Title (in English)
Keyword(1) Adaptive antenna array
Keyword(2) Interference suppression
Keyword(3) Rake path diversity
1st Author's Name Hidekazu TAOKA
1st Author's Affiliation Wireless Laboratories, NTT DoCoMo, Inc.()
2nd Author's Name Kenichi HIGUCHI
2nd Author's Affiliation Wireless Laboratories, NTT DoCoMo, Inc.
3rd Author's Name Tauisuke IHARA
3rd Author's Affiliation Wireless Laboratories, NTT DoCoMo, Inc.
4th Author's Name Mamoru SAWAHASHI
4th Author's Affiliation Wireless Laboratories, NTT DoCoMo, Inc.
Date 2002/1/4
Paper # 2001-DSP-178,2001-SAT-136,2001-RCS-236
Volume (vol) vol.101
Number (no) 542
Page pp.pp.-
#Pages 8
Date of Issue