Abstract:
The capacity of the symbol-asynchronous single-relay channel with multipath is investigated. Due to the slow propagation speed of sound in water and surface/floor reflect...Show MoreMetadata
Abstract:
The capacity of the symbol-asynchronous single-relay channel with multipath is investigated. Due to the slow propagation speed of sound in water and surface/floor reflections, such channels are highly relevant to underwater acoustic communication systems. The symbol-asynchronous single-relay channel can be modeled as a MIMO relay channel with memory; thus MIMO capacity results can be invoked to determine rate bounds. Lower and upper bounds on the capacity are derived under the assumptions of both known and unknown time delays. Conditions for characterizing capacity (when the upper and lower bounds match) are also derived and the optimality of OFDM type of signaling can be readily inferred from the analysis. Numerical examples are provided to illustrate the results.
Published in: 2010 Conference Record of the Forty Fourth Asilomar Conference on Signals, Systems and Computers
Date of Conference: 07-10 November 2010
Date Added to IEEE Xplore: 29 April 2011
ISBN Information: