Hybrid multihop relay protocol using dynamic power allocation for LTE-advanced system

Saransh Malik, Bora Kim, Sangmi Moon, Cheolwoo You, Huaping Liu, Jeong Ho Kim, Intae Hwang

Research output: Contribution to journalArticlepeer-review

Abstract

In this paper, an adaptive relay scheme of hybrid relay system is proposed based on channel state information of the received signal-to-noise ratio (SNR) at the relay node. hybrid relay system is comprised of amplify-and-forward, decode-and-forward and demodulate-and-forward together in cooperative networks. The relay protocols are selected adaptively, on the basis of power allocation (PA) constraint, or the SNR value at previous hop. Thus multihop performance of the relay system can be improved by applying PA allocation scheme. The simulation results show that the performance of the novel hybrid relay protocol can be improved significantly compared to the conventional hybrid system in terms of error performance and link efficiency.

Original languageEnglish
Pages (from-to)2945-2958
Number of pages14
JournalWireless Personal Communications
Volume77
Issue number4
DOIs
StatePublished - Aug 2014

Bibliographical note

Funding Information:
Acknowledgments This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF-2013R1A1A2007779). This research was supported by the MSIP (Ministry of Science, ICT and Future Planning), Korea, under the ITRC (Information Technology Research Center) support program (NIPA-2013-H0301-13-3005) supervised by the NIPA (National IT Industry Promotion Agency).

Keywords

  • AF
  • DF
  • DMF
  • Hybrid
  • Multihop

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