Spatially superposed M-ary QAM wireless communication system

Masayoshi Tanaka; Takuya Eguchi

doi:10.1109/APMC.2006.4429544

Spatially superposed M-ary QAM wireless communication system

Masayoshi Tanaka, Takuya Eguchi

College of Engineering

Nihon University

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

We present a spatially superposed Mary-quadrature amplitude modulation (QAM) communication system that can provide efficient use of frequency resources and transmitted power. The system incorporates multiple conventional quaternary phase shift key (QPSK) modulators and combines their output signals spatially with a specially tailored antenna array to produce an M-ary QAM signal. Thus, it can operate on power amplifiers driven in the high efficiency region and relax the strict requirements for the hardware as compared to conventional M-ary QAM systems. The proposed system, however, is sensitive to superposition error. A novel antenna array system is presented that can minimize the superposition error.

Original language	English
Title of host publication	2006 Asia-Pacific Microwave Conference Proceedings, APMC
Pages	839-842
Number of pages	4
DOIs	https://doi.org/10.1109/APMC.2006.4429544
Publication status	Published - 2006
Event	2006 Asia-Pacific Microwave Conference, APMC - Yokohama, Japan Duration: 12 Dec 2006 → 15 Dec 2006

Publication series

Name	Asia-Pacific Microwave Conference Proceedings, APMC
Volume	2

Conference

Conference	2006 Asia-Pacific Microwave Conference, APMC
Country/Territory	Japan
City	Yokohama
Period	12/12/06 → 15/12/06

Keywords

High efficiency
Phase array antenna
Power amplifier
Spatially power combining
Superposed M-ary QAM

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10.1109/APMC.2006.4429544

Cite this

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title = "Spatially superposed M-ary QAM wireless communication system",

abstract = "We present a spatially superposed Mary-quadrature amplitude modulation (QAM) communication system that can provide efficient use of frequency resources and transmitted power. The system incorporates multiple conventional quaternary phase shift key (QPSK) modulators and combines their output signals spatially with a specially tailored antenna array to produce an M-ary QAM signal. Thus, it can operate on power amplifiers driven in the high efficiency region and relax the strict requirements for the hardware as compared to conventional M-ary QAM systems. The proposed system, however, is sensitive to superposition error. A novel antenna array system is presented that can minimize the superposition error.",

keywords = "High efficiency, Phase array antenna, Power amplifier, Spatially power combining, Superposed M-ary QAM",

author = "Masayoshi Tanaka and Takuya Eguchi",

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language = "English",

isbn = "4902339099",

series = "Asia-Pacific Microwave Conference Proceedings, APMC",

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AB - We present a spatially superposed Mary-quadrature amplitude modulation (QAM) communication system that can provide efficient use of frequency resources and transmitted power. The system incorporates multiple conventional quaternary phase shift key (QPSK) modulators and combines their output signals spatially with a specially tailored antenna array to produce an M-ary QAM signal. Thus, it can operate on power amplifiers driven in the high efficiency region and relax the strict requirements for the hardware as compared to conventional M-ary QAM systems. The proposed system, however, is sensitive to superposition error. A novel antenna array system is presented that can minimize the superposition error.

KW - High efficiency

KW - Phase array antenna

KW - Power amplifier

KW - Spatially power combining

KW - Superposed M-ary QAM

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SN - 9784902339093

T3 - Asia-Pacific Microwave Conference Proceedings, APMC

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BT - 2006 Asia-Pacific Microwave Conference Proceedings, APMC

T2 - 2006 Asia-Pacific Microwave Conference, APMC

Y2 - 12 December 2006 through 15 December 2006

ER -

Spatially superposed M-ary QAM wireless communication system

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Keywords

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