Experimental Evaluation of High Rate Data Transmission Using Turbo/Convolutional Coding in W-CDMA Mobile Communications(Special Issue on Software Defined Radio Technology and Its Applications)
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概要
- 論文の詳細を見る
This paper evaluates the bit error rate (BER) performance of high rate data transmission such as at 64 and 384 kbits/s (kbps) with high quality (average BER is below 10^-6) using turbo/convolutional coding associated with Rake time diversity, antenna diversity, and fast transmission power control (TPC) in multipath fading channels for W-CDMA mobile communications. Laboratory experiments using multipath fading simulators elucidate the superiority of turbo coding over convolutional coding when the channel interleaving length is 40 msec. The required average transmission power for the average BER of 10^-6 using turbo coding is decreased by approximately 1.1-1.5dB and 1.5-1.6dB for 64 and 384kbps data transmissions, respectively, compared to that using convolutional coding for a two-path Rayleigh fading channel with the fading maximum Doppler frequency of f_D = 5-200 Hz. Furthermore, field experimental results elucidate that the required transmission power for the average BER of 10^-6 employing turbo coding is decreased by approximately 0.6 dB and 2.0 dB compared to convolutional coding for 64 and 384 kbps data transmissions, respectively, without antenna diversity reception, while that with antenna diversity reception exhibits only an approximate 0.3-0.5 dB decrease. This decrease in improvement with antenna diversity reception indicates that in an actual fading channel in the field experiments, the impact of the error in path search for Rake combining and SIR measurement for fast TPC diminishes the performance improvement of the turbo coding due to a very low received signal power.
- 社団法人電子情報通信学会の論文
- 2002-12-01
著者
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HIGUCHI Kenichi
Wireless Laboratories, NTT DoCoMo, Inc.
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SAWAHASHI Mamoru
Wireless Laboratories, NTT DoCoMo, Inc.
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Adachi F
Tohoku Univ. Sendai‐shi Jpn
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Adachi Fumiyuki
Department Of Electrical And Communications Engineering Graduate School Of Engineering Tohoku Univer
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Ikeda Tokihiro
Atomic Phys. Lab. Riken
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Higuchi K
Wireless Research Laboratories Ntt Docomo Inc.
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Higuchi K
Department Of Electrical Engineering Tokyo University Of Science
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IKEDA Takehiro
Wireless Research Laboratories, NTT Mobile Communications Network, Inc.
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FUKUMOTO Satoru
Wireless Research Laboratories, NTT Mobile Communications Network, Inc.
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Fukumoto S
Ntt Docomo Inc. Yokosuka‐shi Jpn
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Sawahashi Mamoru
Department Of Electrical Engineering Tokyo University Of Science
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Sawahashi Mamoru
Wireless Laboratories Ntt Do Como Inc.
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Adachi Fumiyuki
Department Of Electrical And Communication Engineering Graduate School Of Engineering Tohoku Univers
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Adachi Fumiyuki
Denartment Of Electrical And Communication Engineering Graduate School Of Engineering Tohoku Univers
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Adachi Fumiyuki
The Graduate School Of Engineering Tohoku University
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Adachi Fumiyuki
R&d Department Ntt Mobile Communications Network Inc.
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Higuchi Kenichi
Wireless Laboratories Ntt Docomo Inc.
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Higuchi Kenichi
Department Of Electrical Engineering Tokyo University Of Science
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Fukumoto Satoru
Wireless Laboratories Ntt Docomo Inc.
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Adachi Fumiyuki
Department Of Electorical Communication Engineering Graduate School Of Engineering Tohoku University
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ADACHI Fumiyuki
Department of Communications Engineering, Graduate School of Engineering, Tohoku University
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Adachi Fumiyuki
Department of communication Engineering
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