Generalized wireless network coding schemes for multihop two-way relay channels

Journal Publication ResearchOnline@JCU
Wang, Gengkun;Xiang, Wei;Yuan, Jinhong
Eric Wang
Abstract

Due to the overwhelming complexity of multihop transmission and intermessage interference, only a limited amount of research has been carried out in the implementation of wireless network coding (WNC) for generalized multihop two-way relay channels (MH-TRCs), let alone the generalization of multihop WNC (MH-WNC) schemes. Our recent paper has showed that the MH-WNC scheme with fixed two transmission time intervals (TTIs) was unable to always outperform conventional non-NC schemes in outage performance for the MH-TRC with an arbitrary number of nodes. In view of this fact, a generalized MH-WNC scheme with multiple TTIs is designed for the L-node K-message MH-TRC in this paper. Closed-form expressions for the upper bound of the outage probability for two prominent relaying network coding strategies (i.e., analog network coding and compute-and-forward network coding) are derived. Moreover, by investigating the relationships between the outage probability and the numbers of nodes, messages, and TTIs, we obtain an optimal MH-WNC scheme that can achieve the best outage probability and always outperform non-NC in the MH-TRC with an arbitrary number of nodes.

Journal

IEEE Transactions on Wireless Communications

Publication Name

IEEE Transactions on Wireless Communications

Volume

13

ISBN/ISSN

1558-2248

Edition

N/A

Issue

9

Pages Count

16

Location

N/A

Publisher

Institute of Electrical and Electronics Engineers

Publisher Url

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Publisher Location

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Publish Date

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Url

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Date

N/A

EISSN

N/A

DOI

10.1109/TWC.2014.2336652