Further Results on Field Experiments of Coherent Wideband DS-CDMA Mobile Radio

Tomohiro DOHI; Yukihiko OKUMURA; Fumiyuki ADACHI

Further Results on Field Experiments of Coherent Wideband DS-CDMA Mobile Radio

Tomohiro DOHI, Yukihiko OKUMURA, Fumiyuki ADACHI

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Field experiments using the 2 GHz carrier frequency band were conducted nearby Tokyo to evaluate the effect of joint use of Rake combining and antenna diversity and also the effect of spreading chip rate (or bandwidth) on the achievable bit error rate (BER) performance and the mobile station transmit power distribution of power controlled coherent DS-CDMA reverse-link (mobile-to-base). Four chip rates, 0. 96, 1. 92, 3. 84, and 7. 68 Mcps, were used. The command interval and power step size of the fast transmission power control (TPC) used in the experiments, 1. 25 ms and 1 dB, respectively, were based on measurements of signal-to-interference plus background noise power ratio (SIR) after Rake combining. The field experiments demonstrate that the joint use of antenna diversity and Rake combining significantly improves the BER performance and, furthermore, that increasing the chip rate improves the BER performance and decreases the transmit power because of enhanced Rake combining through an increase in the number of resolved paths.

Publication: IEICE TRANSACTIONS on Communications Vol.E81-B No.6 pp.1239-1247

Publication Date: 1998/06/25

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Category: Mobile Communication

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Tomohiro DOHI, Yukihiko OKUMURA, Fumiyuki ADACHI, "Further Results on Field Experiments of Coherent Wideband DS-CDMA Mobile Radio" in IEICE TRANSACTIONS on Communications, vol. E81-B, no. 6, pp. 1239-1247, June 1998, doi: .
Abstract: Field experiments using the 2 GHz carrier frequency band were conducted nearby Tokyo to evaluate the effect of joint use of Rake combining and antenna diversity and also the effect of spreading chip rate (or bandwidth) on the achievable bit error rate (BER) performance and the mobile station transmit power distribution of power controlled coherent DS-CDMA reverse-link (mobile-to-base). Four chip rates, 0. 96, 1. 92, 3. 84, and 7. 68 Mcps, were used. The command interval and power step size of the fast transmission power control (TPC) used in the experiments, 1. 25 ms and 1 dB, respectively, were based on measurements of signal-to-interference plus background noise power ratio (SIR) after Rake combining. The field experiments demonstrate that the joint use of antenna diversity and Rake combining significantly improves the BER performance and, furthermore, that increasing the chip rate improves the BER performance and decreases the transmit power because of enhanced Rake combining through an increase in the number of resolved paths.
URL: https://globals.ieice.org/en_transactions/communications/10.1587/e81-b_6_1239/_p

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@ARTICLE{e81-b_6_1239,
author={Tomohiro DOHI, Yukihiko OKUMURA, Fumiyuki ADACHI, },
journal={IEICE TRANSACTIONS on Communications},
title={Further Results on Field Experiments of Coherent Wideband DS-CDMA Mobile Radio},
year={1998},
volume={E81-B},
number={6},
pages={1239-1247},
abstract={Field experiments using the 2 GHz carrier frequency band were conducted nearby Tokyo to evaluate the effect of joint use of Rake combining and antenna diversity and also the effect of spreading chip rate (or bandwidth) on the achievable bit error rate (BER) performance and the mobile station transmit power distribution of power controlled coherent DS-CDMA reverse-link (mobile-to-base). Four chip rates, 0. 96, 1. 92, 3. 84, and 7. 68 Mcps, were used. The command interval and power step size of the fast transmission power control (TPC) used in the experiments, 1. 25 ms and 1 dB, respectively, were based on measurements of signal-to-interference plus background noise power ratio (SIR) after Rake combining. The field experiments demonstrate that the joint use of antenna diversity and Rake combining significantly improves the BER performance and, furthermore, that increasing the chip rate improves the BER performance and decreases the transmit power because of enhanced Rake combining through an increase in the number of resolved paths.},
keywords={},
doi={},
ISSN={},
month={June},}

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TY - JOUR
TI - Further Results on Field Experiments of Coherent Wideband DS-CDMA Mobile Radio
T2 - IEICE TRANSACTIONS on Communications
SP - 1239
EP - 1247
AU - Tomohiro DOHI
AU - Yukihiko OKUMURA
AU - Fumiyuki ADACHI
PY - 1998
DO -
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E81-B
IS - 6
JA - IEICE TRANSACTIONS on Communications
Y1 - June 1998
AB - Field experiments using the 2 GHz carrier frequency band were conducted nearby Tokyo to evaluate the effect of joint use of Rake combining and antenna diversity and also the effect of spreading chip rate (or bandwidth) on the achievable bit error rate (BER) performance and the mobile station transmit power distribution of power controlled coherent DS-CDMA reverse-link (mobile-to-base). Four chip rates, 0. 96, 1. 92, 3. 84, and 7. 68 Mcps, were used. The command interval and power step size of the fast transmission power control (TPC) used in the experiments, 1. 25 ms and 1 dB, respectively, were based on measurements of signal-to-interference plus background noise power ratio (SIR) after Rake combining. The field experiments demonstrate that the joint use of antenna diversity and Rake combining significantly improves the BER performance and, furthermore, that increasing the chip rate improves the BER performance and decreases the transmit power because of enhanced Rake combining through an increase in the number of resolved paths.
ER -