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Journal of Electrical and Computer Engineering
Volume 2010 (2010), Article ID 324138, 5 pages
http://dx.doi.org/10.1155/2010/324138
Research Article

High-Rate Redundant Space-Time Coding

1Ericsson AB, 164 80 Stockholm, Sweden
2Communication Systems, Royal Institute of Technology (KTH), 164 40 Stockholm, Sweden

Received 26 September 2009; Accepted 27 December 2009

Academic Editor: Adnan Kavak

Copyright © 2010 Jawad Manssour et al. 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

We present a new space-time encoder based on packet-level redundancy which can increase the space-time encoder rate beyond unity without compromising diversity gains. A complementary low-complexity decoding algorithm based on maximum ratio combining and successive interference cancelation is further proposed. A major merit of the decoding algorithm is that it allows to adaptively tradeoff between diversity and multiplexing gains based on the estimated channel parameters at the receiver without requiring any channel state information at the transmitter. System level simulation results give insight into the advantages of the proposed scheme when compared to its Alamouti and MIMO multiplexing based on single value decomposition counterparts.