A Training based Distributed Non-Coherent Space-Time Coding Strategy
Abstract
Unitary space-time modulation is known to be an efficient means to communicate over non-coherent Multiple Input Multiple Output (MIMO) channels. In this letter, differential unitary space-time coding and non-coherent space-time coding for the training based approach of Kim and Tarokh are addressed. For this approach, necessary and sufficient conditions for multi-group decodability are derived in a simple way assuming a Generalized Likelihood Ratio Test receiver and a unitary codebook. Extending Kim and Tarokh's approach for colocated MIMO systems, a novel training based approach to distributed non-coherent space-time coding for wireless relay networks is proposed. An explicit construction of two-group decodable distributed non-coherent space-time codes achieving full cooperative diversity for all even number of relays is provided.
Cite
@article{arxiv.0707.2090,
title = {A Training based Distributed Non-Coherent Space-Time Coding Strategy},
author = {G. Susinder Rajan and B. Sundar Rajan},
journal= {arXiv preprint arXiv:0707.2090},
year = {2007}
}
Comments
10 pages, 3 figures, submitted to IEEE Transactions on Wireless Communications