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Enhancing Performance of Asynchronous Cooperative Relay Network with Partial Feedback

  • The-Nghiep TranEmail author
Conference paper
  • 570 Downloads
Part of the Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering book series (LNICST, volume 221)

Abstract

Distributed close-loop extended orthogonal space-time block code (DCL EO-STBC) was demonstrated to achieve a significant improvement of performance for closed-loop cooperative relay network systems with limited feedback channel. This paper proposes a decode-and-forward (DF) cooperative strategy with using partial feedback in stead of DCL EO-STBC to obtain a distributed cooperative diversity gain. Based on the partial phase feedback technique, the new scheme has only previous inter-symbol interference (ISI) components in the received signals and obtains an enhancing system performance in term of signal-noise power ratio (SNR) at the destination node. Theoretical analysis and Monte-Carlo simulations confirm that the using near-optimum detection (NOD) at the destination can completely remove interference components before detection process. In comparison to previous DCL EO-STBC scheme, this work not only has simpler signal processing due to not using DCL EO-STBC endcoder and decoder, but also outperforms sytem performance without decrease transmission rate.

Keywords

Partial feedback Near-optimum detection Inter-symbol interference Distributed space-time code Asynchronous cooperative network 

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Copyright information

© ICST Institute for Computer Sciences, Social Informatics and Telecommunications Engineering 2018

Authors and Affiliations

  1. 1.Faculty of Radio-ElectronicsLe Quy Don Technical UniversityHanoiVietnam

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