Embracing wireless interference: analog network coding
Proceedings of the 2007 conference on Applications, technologies, architectures, and protocols for computer communications
Two-Way Radio Networks with a Star Topology
IZS '06 Proceedings of the 2006 International Zurich Seminar on Communications
Diversity and multiplexing: a fundamental tradeoff in multiple-antenna channels
IEEE Transactions on Information Theory
Diversity-multiplexing tradeoff in multiple-access channels
IEEE Transactions on Information Theory
Source-channel diversity for parallel channels
IEEE Transactions on Information Theory
On the Distortion SNR Exponent of Hybrid Digital–Analog Space–Time Coding
IEEE Transactions on Information Theory
Source and Channel Coding for Cooperative Relaying
IEEE Transactions on Information Theory
Joint Source and Channel Coding for MIMO Systems: Is it Better to be Robust or Quick?
IEEE Transactions on Information Theory
Performance Bounds for Bidirectional Coded Cooperation Protocols
IEEE Transactions on Information Theory
Spectral efficient protocols for half-duplex fading relay channels
IEEE Journal on Selected Areas in Communications
Diversity-Multiplexing Trade-off in Adaptive Two-Way Relaying
IEEE Transactions on Information Theory
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The problem of bidirectionally transmitting two analog sources over a fading channel with the help of a relay is studied. In the regime of high signal-to-noise ratios, upper and lower bounds on the exponent of the end-to-end expected distortion are derived. It is shown that simple two-way relaying protocols based on the separation of source and channel coding can provide significant improvements in the distortion exponent over their one-way counterparts. In particular, in the regime of low channel bandwidth to source bandwidth ratios, an amplify-and-forward scheme is shown to achieve good distortion performance, albeit at the cost of large feedback overhead. In the regime of high bandwidth ratio, even better performance is achieved by a novel adaptive decode-and-forward scheme that successfully exploits low-rate feedback from the relay to the source nodes.