High capacity and wide coverage cell station for personal communication systems

Kiyoshi Kobayashi; Tomoaki Kumagai; Shuji Kubota; Shigeaki Ogose; Takeshi Hattori

High capacity and wide coverage cell station for personal communication systems

Kiyoshi Kobayashi, Tomoaki Kumagai, Shuji Kubota, Shigeaki Ogose, Takeshi Hattori

Research output: Contribution to journal › Article › peer-review

Abstract

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 the coverage. The 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.

Original language	English
Pages (from-to)	112-118
Number of pages	7
Journal	IEICE Transactions on Communications
Volume	E82-B
Issue number	1
Publication status	Published - 1999 Jan 1
Externally published	Yes

Keywords

Burst-by-burst AFC
Cell station
Coherent detection
Diversity
Personal communication

ASJC Scopus subject areas

Software
Computer Networks and Communications
Electrical and Electronic Engineering

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AU - Kobayashi, Kiyoshi

AU - Kumagai, Tomoaki

AU - Kubota, Shuji

AU - Ogose, Shigeaki

AU - Hattori, Takeshi

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AB - 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 the coverage. The 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.

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High capacity and wide coverage cell station for personal communication systems

Abstract

Keywords

ASJC Scopus subject areas

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