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

— In this paper, 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 assuming a Generalized Likelihood Ratio Test receiver and a unitary codebook. Extending Kim and Tarokh’s approach for collocated 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.

• Type: Journal
• Year: 2007
• Where: CORR
• Authors: G. Susinder Rajan, B. Sundar Rajan
• Keywords: CORR 2007, Education, Non-coherent Space-time, Non-coherent Space-time Codes, Training Based Approach