Combined User Multiplexing and Data Modulation through Non-binary Turbo Codes for UWB

Authors

K. Popovski, University of Wollongong
Tadeusz Wysocki, University of Nebraska-LincolnFollow
B. J. Wysocki, University of Nebraska-LincolnFollow

Document Type

Article

Date of this Version

2008

Comments

Published in Wireless Communications and Networking Conference, 2008. WCNC 2008. IEEE March 31 2008-April 3 2008 Pages 1038-1043; DOI 10.1109/WCNC.2008.188 ©2008 Crown Copyright. Used by permission.

Abstract

With significant research being conducted in Ultra Wideband communications to increase error performance, this paper proposes a combination of user multiplexing and data encoding to achieve a BER improvement. Through the use of non-binary turbo coding, data is modulated to form a time hopping code which is applied to a time-reversed UWB system. Comparative results with conventional binary coding are given, showing the possibility for BER improvements in systems with a low number of users. Slight performance degradations for a large number of users exist. The effects of a user applying turbo coding on other users not applying forward error correction is also studied.