Hierarchical modulation-based cooperation utilizing relay-assistant full-duplex diversity

Hyukmin Son, Jongrok Park, Sanghoon Lee

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

In this paper, we present a hierarchical modulation- based cooperation (HMC) scheme to overcome capacity degradation due to half-duplex transmissions in conventional cooperative relay systems. In the HMC scheme, two relay terminals are used for both transmit and receive operations, i.e., full-duplex transmission. This scheme reduces the required number of time slots for cooperation. Utilizing this cooperative mechanism, the HMC scheme achieves cooperative diversity at the destination node by combining the signals delivered from the source and relay nodes. In addition, we derive a closed form of the end-to-end bit error rate for the HMC scheme, which is utilized to determine an optimal power ratio for hierarchical signals at the source node. In concurrence with the HMC scheme, we develop the best relay selection scheme for a practical wireless communication networks.

Original languageEnglish
Pages (from-to)583-595
Number of pages13
JournalWireless Networks
Volume17
Issue number3
DOIs
Publication statusPublished - 2011 Apr

All Science Journal Classification (ASJC) codes

  • Information Systems
  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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