Wyner-Ziv Lattice Coding for Two-Way Relay Channel

Sinda Smirani (1) , Mohamed Kamoun (1) , Mireille Sarkiss (1) , Abdellatif Zaidi (2) , Pierre Duhamel (3)

1 LIST (CEA) - Laboratoire d'Intégration des Systèmes et des Technologies
2 LIGM - Laboratoire d'Informatique Gaspard-Monge
3 L2S - Laboratoire des signaux et systèmes

A Two-Way Relay Channel (TWRC) in which duplex transmission between two users via a relay station is considered. A physical layer network coding strategy based on compress-and-forward relaying scheme for the TWRC is proposed. In the underlying coding strategy, we use nested lattices for Wyner-Ziv coding and decoding. The relay uses the weaker side information available at the receivers from the first transmission phase to broadcast a common quantized version of its received signal. We characterize the achievable rate region of the presented scheme. Then we show that lattice codes can achieve random coding rates.

Domains: Computer Science [cs]; Networking and Internet Architecture [cs.NI]; Engineering Sciences [physics]; Signal and Image processing; Computer Science [cs]; Signal and Image Processing

Sinda Smirani, Mohamed Kamoun, Mireille Sarkiss, Abdellatif Zaidi, Pierre Duhamel. Wyner-Ziv Lattice Coding for Two-Way Relay Channel. ATC/REV 2012, Oct 2012, Hanoi, Vietnam. pp.207-212, ⟨10.1109/ATC.2012.6404261⟩. ⟨hal-00742209⟩