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On the capacity region of asymmetric gaussian two-way line channel
, Article IEEE Transactions on Communications ; Volume 64, Issue 9 , 2016 , Pages 3669-3682 ; 00906778 (ISSN) ; Karimi Bidhendi, S ; Behroozi, H ; Sharif University of Technology
Institute of Electrical and Electronics Engineers Inc
2016
Abstract
Lattice codes are known to outperform random codes for certain networks, especially in the Gaussian two-way relay channels (GTWRCs) where lattice codes are able to exploit their linearity. As an extension of the GTWRC, in this paper, we consider the asymmetric Gaussian two-way line network where two nodes exchange their messages through multiple relays. We first investigate the capacity region of the full-duplex two-way two-relay line network. The results can be extended to an arbitrary number of relays and to half-duplex scenarios. This channel consists of four nodes: 1 ↔ 2 ↔ 3 ↔ 4, where nodes 1 and 4 with the help of two full-duplex relays, i.e., nodes 2 and 3, exchange their messages...