High Capacity and Wide Coverage Cell Station for Personal Communication Systems
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概要
- 論文の詳細を見る
This paper proposes a new cell station (CS) configuration for personal communication systems. The proposed CS employs a modified coherent demodulator with 4-branch maximal ratio combining diversity and a burst-by-burst automatic frequency control (AFC) to enhance thc coverage. Thc proposed CS also employs an antenna-sharing diversity transmission to incorporate more than one transceiver block into a small unit with high power efficiency. With these techniques, the BER performance of the uplink control channel (CCH) is flattened regardless of carrier frequency errors within ±12 kHz; the diversity gain of uplink traffic channel (TCH) is improved by 2 dB; the downlink transmission power is reduced by 1.9 dB.
- 社団法人電子情報通信学会の論文
- 1999-01-25
著者
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Kobayashi Kiyoshi
NTT Wireless Systems Laboratories
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Kubota Shuji
NTT Radio Communication Systems Laboratories
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KUMAGAI Tomoaki
NTT Access Network Service Systems Laboratories, NTT Corporation
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Kubota S
Ntt Network Innovation Lab. Yokosuka‐shi Jpn
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Kubota Shuji
Ntt R&d Management Dept.
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Kumagai Tomoaki
Ntt Wireless Systems Laboratories
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Kumagai Tomoaki
Department Of Applied Chemistry And Biotechnology Faculty Of Engineering Fukui University
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Kawazoe Katsuhiko
Ntt Radio Communication Systems Laboratories
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Kobayashi K
Shibaura Inst. Of Technol. Tokyo Jpn
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Kubota S
The Authors Are With Fujitsu Laboratories Ltd.
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Kubota S
Ntt Wireless Systems Innovation Lab. Kanagawa Jpn
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OGOSE Shigeaki
Kagawa University
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HATTORI Takeshi
Sophia University
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- FOREWORD
- Direct Spectrum Division Transmission for Highly Efficient Frequency Utilization in Satellite Communications