Presentation	1999/11/26 Field Experimental Results on Feedback Type Transmit Diversity in W-CDMA Forward Link Satoru Fukumoto, Kenichi Higuchi, Mamoru Sawahashi, Fumiyuki Adachi,
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Abstract(in English)	This paper presents the field experimental results on feedback type transmit diversity in W-CDMA forward link. Let W_1=A_1e^ and W_2=A_2e^ be the complex antenna weights of 2-antenna, we investigated the BER performance of the following 3-mode; (1) Mode1 : φ_1-φ_2={π/4,3π/4,5π/4,7π/4}, A_1=A_2=1, (2) Mode2 : φ_1=0, φ_2={0,π}, A_1=A_2=1, (3) Mode3 : A_1, A_2={0,1} φ_1, φ_2=0. The results showed that when there was no feedback information (FBI) bit error, the required total average transmit E_b/N_0 of the Mode 1, 2, 3 for obtaining the average BER of 10^<-3> can be decreased by about 0.5-2.0 dB and 1.0-2.5 compared to 1-antenna transmitter with/without antenna diversity reception. However, when the fast transmit power control was applied in reverse link, no gain from the 1-antenna transmit case was obtained for 3 modes due to the errors of FBI command bits and of the transmit antenna verification.
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Keyword(in English)	Mobile radio communication / W-CDMA / Transmit diversity / Fast transmit power control
Paper #	RCS99-156
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Committee	RCS
Conference Date	1999/11/26(1days)
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Paper Information
Registration To	Radio Communication Systems (RCS)
Language	JPN
Title (in Japanese)	(See Japanese page)
Sub Title (in Japanese)	(See Japanese page)
Title (in English)	Field Experimental Results on Feedback Type Transmit Diversity in W-CDMA Forward Link
Sub Title (in English)
Keyword(1)	Mobile radio communication
Keyword(2)	W-CDMA
Keyword(3)	Transmit diversity
Keyword(4)	Fast transmit power control
1st Author's Name	Satoru Fukumoto
1st Author's Affiliation	Wireless Research Laboratories, NTT Mobile Communications Network Inc.()
2nd Author's Name	Kenichi Higuchi
2nd Author's Affiliation	Wireless Research Laboratories, NTT Mobile Communications Network Inc.
3rd Author's Name	Mamoru Sawahashi
3rd Author's Affiliation	Wireless Research Laboratories, NTT Mobile Communications Network Inc.
4th Author's Name	Fumiyuki Adachi
4th Author's Affiliation	Wireless Research Laboratories, NTT Mobile Communications Network Inc.
Date	1999/11/26
Paper #	RCS99-156
Volume (vol)	vol.99
Number (no)	470
Page	pp.pp.-
#Pages	8
Date of Issue