Concatenated soft-output equalization and TCM for wireless personal communications

Yue Chen, Khaled Letaief, Justin C I Chuang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper, we will investigate the use of maximum a posteriori probability (MAP) algorithm to realize soft-output equalization in a concatenated equalization and Trellis-coded modulation (TCM) based wireless communication system. Specifically, we will consider Lee's MAP algorithm and propose a simplified version of such algorithm which does not require knowledge of the noise variance and can avoid the calculation of the nonlinear function which is involved in the probabilities. Furthermore, we use the square root Kalman filtering algorithm for real channel estimation. In order to improve the system performance, two-branch equal-gain combining diversity will be also considered. Finally, we compare the performance of the MAP algorithm based equalization with our previously proposed equalization scheme which combines decision feedback equalization and TCM.

Original languageEnglish
Title of host publicationConference Record / IEEE Global Telecommunications Conference
Editors Anon
PublisherIEEE
Pages1552-1556
Number of pages5
Volume3
Publication statusPublished - 1997
Externally publishedYes
EventProceedings of the 1997 IEEE Global Telecommunications Conference. Part 2 (of 3) - Phoenix, AZ, USA
Duration: 3 Nov 19978 Nov 1997

Other

OtherProceedings of the 1997 IEEE Global Telecommunications Conference. Part 2 (of 3)
CityPhoenix, AZ, USA
Period3/11/978/11/97

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ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Global and Planetary Change

Cite this

Chen, Y., Letaief, K., & Chuang, J. C. I. (1997). Concatenated soft-output equalization and TCM for wireless personal communications. In Anon (Ed.), Conference Record / IEEE Global Telecommunications Conference (Vol. 3, pp. 1552-1556). IEEE.