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Journal of Electrical and Computer Engineering
Volume 2010 (2010), Article ID 930368, 5 pages
http://dx.doi.org/10.1155/2010/930368
Research Article

PAPR Reduction Performance by Active Constellation Extension for Diversity MIMO-OFDM Systems

Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA

Received 6 June 2009; Accepted 28 September 2009

Academic Editor: Adam Panagos

Copyright © 2010 Theodoros Tsiligkaridis and Douglas L. Jones. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The V-BLAST wireless communication architecture, space-time block code (STBC), and space-frequency block code (SFBC) techniques are strong candidates for achieving very high data rates in 4G broadband wireless communications. This paper extends the efficient Active Constellation Extension Smart Gradient-Project (ACE-SGP) peak-to-average power (PAPR) reduction method to STBC, SFBC, and V-BLAST systems. Simulation results show 4.19 and 3.57 dB of PAPR reduction for the Alamouti STBC and SFBC, respectively.