Inter-Relay Interference in Two-Path Digital Relaying Systems: Detrimental or Beneficial?

Author

Sun, Li ; Zhang, Taiyi ; Niu, Hao

Author_Institution

Dept. of Inf. & Commun. Eng., Xi´´an Jiaotong Univ., Xi´´an, China

Volume

10

Issue

8

fYear

2011

fDate

8/1/2011 12:00:00 AM

Firstpage

2468

Lastpage

2473

Abstract

This Letter studies the two-path digital relaying systems, where two relay nodes alternately forward messages from the source to the destination. By applying the signal space diversity (SSD) technique, a novel adaptive scheme is proposed to deal with the inter-relay interference (IRI). Our work reveals that, with careful protocol design, the IRI becomes a beneficial resource that can be utilized rather than a detrimental factor that has to be suppressed. Simulation results demonstrate that, in high average SNR regions, the proposed method outperforms the existing alternatives in terms of symbol error probability.

Keywords

cooperative communication; digital communication; diversity reception; error statistics; interference suppression; protocols; signal processing; adaptive scheme; cooperative relaying; interrelay interference; protocol design; signal space diversity technique; symbol error probability; two-path digital relaying systems; wireless systems; Decoding; Error probability; Interference; Modulation; Protocols; Relays; Signal to noise ratio; Two-path relay; inter-relay interference; signal space diversity;

fLanguage

English

Journal_Title

Wireless Communications, IEEE Transactions on

Publisher

ieee

ISSN

1536-1276

Type

jour

DOI

10.1109/TWC.2011.062111.110321

Filename

5934680