Mobility

A New Achievable Rate for the Gaussian Parallel Relay Channel

Download Now Free registration required

Executive Summary

Schein and Gallager introduced the Gaussian parallel relay channel in 2000. They proposed the Amplify-and-Forward (AF) and the Decode-and-Forward (DF) strategies for this channel. For a long time, the best known achievable rate for this channel was based on the AF and DF with time sharing (AF-DF). Recently, a Rematch-and-Forward (RF) scheme for the scenario in which different amounts of bandwidth can be assigned to the first and second hops were proposed. In this paper, the authors propose a Combined Amplify-and-Decode Forward (CADF) scheme for the Gaussian parallel relay channel. They prove that the CADF scheme always gives a better achievable rate compared to the RF scheme, when there is a bandwidth mismatch between the first hop and the second hop.

  • Format: PDF
  • Size: 155.24 KB