Izvorni znanstveni članak
https://doi.org/10.24138/jcomss.v7i1.182
Efficient ARQ Retransmission Schemes for Two-Way Relay Networks
Quoc-Tuan Vien
; School of Engineering & Computing, Glasgow Caledonian University, Glasgow G4 0BA, United Kingdom
Le-Nam Tran
; Signal Processing Laboratory, ACCESS Linnaeus Center, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden
Huan X. Nguyen
; School of Engineering and Information Sciences, Middlesex University, The Burroughs, London NW4 4BT, United Kingdom
Sažetak
In this paper, we investigate different practical automatic repeat request (ARQ) retransmission protocols for twoway wireless relay networks based on network coding (NC). The idea of NC is applied to increase the achievable throughput for the exchange of information between two terminals through one relay. Using NC, throughput efficiency is significantly improved due to the reduction of the number of retransmissions. Particularly, two improved NC-based ARQ schemes are designed based on go-back-N and selective-repeat (SR) protocols. The analysis of throughput efficiency is then carried out to find the best retransmission strategy for different scenarios. It is shown that the combination of improved NC-based SR ARQ scheme in the broadcast phase and the traditional SR ARQ scheme in the multiple access phase achieves the highest throughput efficiency compared to the other combinations of ARQ schemes. Finally, simulation results are provided to verify the theoretical analysis.
Ključne riječi
Two-way relay network; network coding; ARQ protocol
Hrčak ID:
180240
URI
Datum izdavanja:
23.3.2011.
Posjeta: 758 *