Efficient Modulation for Band-Limited Channels

作     者：Forney, G. David Gallager, Robert G. Lang, Gordon R. Longstaff, Fred M. Qureshi, Shahid U. 

作者机构：Motorola Information Systems Group Mansfield MA 02048 United States Department of Electrical Engineering Computer Science Massachusetts Institute of Technology Cambridge MA 02139 United States Motorola Information System Ltd. Rexdale Ont. M9V 1C1 Canada Codex Corporation Canton MA 02021 United States 

出 版 物：《IEEE Journal on Selected Areas in Communications》 (IEEE J Sel Areas Commun)

年 卷 期：1984年第2卷第5期

页      面：632-647页

学科分类：0810[工学-信息与通信工程] 0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 0839[工学-网络空间安全] 08[工学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

主　　题：Modems Bandwidth Telephony Quadrature amplitude modulation Constellation diagram Modulation coding Signal to noise ratio History Explosions Layout 

摘      要：This paper attempts to present a comprehensive tutorial survey of the development of efficient modulation techniques for bandlimited channels, such as telephone channels. After a historoyf advances in commercial high-speed modems and a discussion of theoretical limits, it reviews efforts to optimize two-dimensional signal constellations and presents further elaborations of uncoded modulation. Its principal emphasis, however, is on coded modulation twhniques, in which there is an explosion of current interest, both for research and for practical application. Both block-coded and trellis-coded modulation are covered, in a common framework. A few new techniques are presented. Copyright © 1984 by The Institute of Electrical and Electronics Engineers, Inc.