Presentation	2012-03-07 Effects of Open-loop Transmit Diversity Schemes with Four Antennas for Control Signals Using Cyclic-Shift CDMA Yuichiro Hikosaka, Teruo Kawamura, Hidekazu Taoka, Mamoru Sawahashi,
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Abstract(in English)	This paper investigates the effects of open-loop transmit diversity schemes with four antennas for low-rate control signals using cyclic shift (CS)-CDMA in single-carrier (SC)-FDMA. More specifically, we investigate the average bock error rate (BLER) performance levels of space orthogonal-resource transmit diversity (SORTD) and a combination of space-time block code (STBC) and time-switched transmit diversity (TSTD) for N_= 2 and 4 antenna diversity receptions. Computer simulation results show that for N_ = 2, the required average received signal-to-noise power ratio (SNR) at the average BLER of 10^<-2> and 10^<-3> using SORTD with N_ = 4 antennas is decreased by approximately 0.6 and 1.5 dB compared to that for the SORTD with N_ = 2 antennas. It is shown, however, that the effect in decreasing the required average received SNR by increasing N_ from 2 to 4 is slight for N_ = 4 receiver diversity.
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Keyword(in English)	Mobile communications / Transmit diversity / Control signal / Cyclic shift CDMA
Paper #	RCS2011-324
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Committee	RCS
Conference Date	2012/2/29(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)	Effects of Open-loop Transmit Diversity Schemes with Four Antennas for Control Signals Using Cyclic-Shift CDMA
Sub Title (in English)
Keyword(1)	Mobile communications
Keyword(2)	Transmit diversity
Keyword(3)	Control signal
Keyword(4)	Cyclic shift CDMA
1st Author's Name	Yuichiro Hikosaka
1st Author's Affiliation	Department of Information Network Engineering, Tokyo City University()
2nd Author's Name	Teruo Kawamura
2nd Author's Affiliation	Radio Access Network Development Department, NTT DOCOMO, INC.
3rd Author's Name	Hidekazu Taoka
3rd Author's Affiliation	DOCOMO Communications Laboratories Europe GmbH
4th Author's Name	Mamoru Sawahashi
4th Author's Affiliation	Department of Information Network Engineering, Tokyo City University
Date	2012-03-07
Paper #	RCS2011-324
Volume (vol)	vol.111
Number (no)	451
Page	pp.pp.-
#Pages	6
Date of Issue