Superposition Coding Based Wireless Network Coding Scheme for Two-Way Cooperative Relaying

• KANEKO Megumi

  Graduate School of Informatics, Kyoto University

• HAYASHI Kazunori

  Graduate School of Informatics, Kyoto University

• SAKAI Hideaki

  Graduate School of Informatics, Kyoto University

抄録

Recent advances in cooperative communication and wireless Network Coding (NC) may lead to huge performance gains in relay systems. In this context, we focus on the two-way relay scenario, where two nodes exchange information via a common relay. We design a practical Superposition Coding (SC) based NC scheme for Decode-and-Forward (DF) half-duplex relaying, where the goal is to increase the achievable rate. By taking advantage of the direct link and by providing a suboptimal yet efficient power division among the superposed layers, our proposed SC two-way relaying scheme outperforms the reference schemes, including the well-known 3-step DF-NC scheme and the capacity of 2-step schemes for a large set of SNRs, while approaching closely the performance bound.

収録刊行物

• IEICE Transactions on Communications

  IEICE Transactions on Communications E93-B (12), 3354-3361, 2010

  一般社団法人 電子情報通信学会

キーワード

• relay system
• wireless network coding
• superposition coding
• cooperative diversity

詳細情報

• CRID: 1390001204375374208
• NII論文ID: 10027982074
• NII書誌ID: AA10826261
• DOI: 10.1587/transcom.e93.b.3354
• ISSN: 17451345
• ISSN: 09168516
• HANDLE: 2433/158458
• Web Site: http://www.jstage.jst.go.jp/article/transcom/E93.B/12/E93.B_12_3354/_pdf
• 本文言語コード: en
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