Training design in single relay AF cooperative systems with correlated channels

In this paper, training design is studied for a single relay amplify-and-forward cooperative network. The taps of the frequency selective channels are assumed to be correlated and OFDM modulation is used for transmission. Based on the least squares (LS) criterion, conditions for pilot tone positioning and a number of power allocation schemes are described. Analytical closed-form power allocation expressions are provided for both the source and the relay. The theoretical results are fully corroborated by simulations.

• Type: Journal
• Year: 2011
• Where: ICASSP
• Authors: Christos Mavrokefalidis, Athanasios A. Rontogiannis, Kostas Berberidis
• Keywords: Frequency Selective Channels, ICASSP 2011, Power Allocation, Power Allocation Schemes, Signal Processing