Trellis coded modulation using partially overlapped signal sets of non-equiprobable signaling

M. Ariyoshi, Iwao Sasase

研究成果: Conference contribution

抄録

In conventional trellis coded modulation (TCM), a higher-ary modulation scheme combining with a convolutional code is employed not to expand the transmitted bandwidth. This forces the system to be attended by signal constellation expansion and increasing the average signal power. As solutions to avoid signal constellation expansion, TCM systems using totally overlapped signal sets (TO-TCM and RU-TCM) were proposed. These schemes can realize a coded modulation system with no signal constellation expansion and achieve more coding gain than conventional TCM. However, a problem that the systems with totally overlapped signal sets might be catastrophic has been remained. The authors propose a novel TCM system using partially overlapped signal sets of nonequiprobable signaling (PO-TCM-NE). This scheme employs the partially overlapped signal constellation to control increasing signal points, and to avoid catastrophic error propagation. The nonequiprobable signaling is employed to reduce average signal power. Coding gain of proposed PO-TCM-NE is considerably improved; in consequence the average signal power is reduced much lower than other TCM systems with equiprobable signaling.

本文言語English
ホスト出版物のタイトルWireless Networks - Catching the Mobile Future
ホスト出版物のサブタイトル5th IEEE Intemational Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 1994 - Proceedings
編集者Ramjee Prasad, Jens C. Arnbak, Jos H. Weber
出版社Institute of Electrical and Electronics Engineers Inc.
ページ558-562
ページ数5
ISBN(電子版)9051991932
DOI
出版ステータスPublished - 1994 1 1
イベント5th IEEE Intemational Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 1994 - The Hague, Netherlands
継続期間: 1994 9 181994 9 22

出版物シリーズ

名前IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
2

Conference

Conference5th IEEE Intemational Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 1994
CountryNetherlands
CityThe Hague
Period94/9/1894/9/22

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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