A Training based Distributed Non-Coherent Space-Time Coding Strategy

G. Susinder Rajan; B. Sundar Rajan

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arXiv · 0707.2090

A Training based Distributed Non-Coherent Space-Time Coding Strategy

G. Susinder Rajan·B. Sundar Rajan

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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.

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BibTeX RIS

G. Susinder Rajan, B. Sundar Rajan. 2007-07-13. A Training based Distributed Non-Coherent Space-Time Coding Strategy. https://arxiv.org/abs/0707.2090

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