Throughput Analysis of Two-Way NCed-HARQ With Reverse-Link Assistance and Estimated Channel State Information

To raise the spectral efficiency, network coded automatic repeat request (NCed ARQ) has been proved to be a promising scheme. In this letter, we extend the NCed ARQ with reverse-link assistance to include hybrid-ARQ (HARQ). We also consider a practical scenario where the receivers use a training pha...

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Bibliographic Details
Published inIEEE communications letters Vol. 22; no. 2; pp. 352 - 355
Main Authors Hongyi Zhu, Smida, Besma, Love, David J.
Format Journal Article
LanguageEnglish
Published IEEE 01.02.2018
Subjects
Decoding
Downlink
Fading channels
hybrid automatic repeat request
Network coding
outage probability
Receivers
Throughput
throughput analysis
Two-way communications
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Summary:To raise the spectral efficiency, network coded automatic repeat request (NCed ARQ) has been proved to be a promising scheme. In this letter, we extend the NCed ARQ with reverse-link assistance to include hybrid-ARQ (HARQ). We also consider a practical scenario where the receivers use a training phase to estimate the channels. The downlink throughput expressions are derived for an arbitrary number of users in continuous Rayleigh fading channels. The numerical results match our mathematical derivations and show that the downlink throughput is greatly improved by the combination of RLA and HARQ.
ISSN:1089-7798
1558-2558
DOI:10.1109/LCOMM.2017.2775611