Presentation	2003/5/15 Experimental Evaluation of Throughput Performance by Changing Channel Coding Rate and MultiPlexed Code Channels in Reverse Link for VSF-CDMA Broadband Wireless Access Teruo KAWAMURA, kenichi HIGUCHI, Hiroyuki ATARASHI, Mamoru SAWAHASHI,
PDF Download Page	PDF download Page Link
Abstract(in Japanese)	(See Japanese page)
Abstract(in English)	This paper experimentally investigates the throughput performance of Variable Spreading Factor (VSF)-CDMA broadband wireless access in the reverse link multipath fading channel, employing the change of channel coding rate, R, and the number of multiplexed codes, C_ according to the received signal energy per symbol-to-background noise spectrum density ratio (E_s/N_o) assuming QPSK data modulation. The experimental results demonstrated that in a multipath fading channel, up to six paths, VSF-CDMA increases the achievable throughput by increasing R and C_ according to the increase in the average received E_s/N_o. Furthermore, we experimentally elucidated that the above 20 Mbps throughput is achieved using 40-MHz bandwidth at the average received E_S/N_O=8.8 dB, by employing QPSK data modulation, R=1/2 and C_=3 codes ofthe spreading factor SF=4 in a four-path fading channel, where the spectrum efficiency corresponds to above 20 Mbps / 40 MHz=0.5 bits/Hz.
Keyword(in Japanese)	(See Japanese page)
Keyword(in English)	broadband wireless acces / reverse link / VSF-CDMA / throughput
Paper #	RCS2003-27
Date of Issue

Conference Information
Committee	RCS
Conference Date	2003/5/15(1days)
Place (in Japanese)	(See Japanese page)
Place (in English)
Topics (in Japanese)	(See Japanese page)
Topics (in English)
Chair
Vice Chair
Secretary
Assistant

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)	Experimental Evaluation of Throughput Performance by Changing Channel Coding Rate and MultiPlexed Code Channels in Reverse Link for VSF-CDMA Broadband Wireless Access
Sub Title (in English)
Keyword(1)	broadband wireless acces
Keyword(2)	reverse link
Keyword(3)	VSF-CDMA
Keyword(4)	throughput
1st Author's Name	Teruo KAWAMURA
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	Hiroyuki ATARASHI
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	2003/5/15
Paper #	RCS2003-27
Volume (vol)	vol.103
Number (no)	65
Page	pp.pp.-
#Pages	6
Date of Issue