Diversity-Multiplexing Trade-off in Adaptive Two-Way Relaying
- 20 June 2011
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Information Theory
- Vol. 57 (7), 4235-4254
- https://doi.org/10.1109/tit.2011.2145190
Abstract
Resource allocation for symmetric half-duplex bidirectional relaying networks is considered. Various decode-and-forward (DF) based relaying strategies that efficiently exploit quantized channel state information (CSI) at the transmitters (CSIT) are investigated. Adapting the number of channel uses for each relaying phase and allocating transmit power based on limited CSIT is shown to result in a significant improvement in the diversity-multiplexing trade-off (DMT). Without a direct link between the sources, power control is instrumental to efficiently exploit CSI feedback from sources to relay, resulting in superior performance that matches corresponding upper bounds in certain cases. With direct links between the sources, it is shown that DF two-way relaying does not suffer from a diversity loss when the multiplexing gain is high, a significant improvement over the dynamic DF protocol for one-way relaying. The best DMT is achieved when each source broadcasts partial CSI to the other nodes in the network, allowing them to adapt their transmit powers.Keywords
This publication has 23 references indexed in Scilit:
- On the Capacity and Diversity-Multiplexing Tradeoff of the Two-Way Relay ChannelIEEE Transactions on Information Theory, 2011
- Performance Bounds for Bidirectional Coded Cooperation ProtocolsIEEE Transactions on Information Theory, 2008
- Compute-and-forward: Harnessing interference with structured codesPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2008
- Capacity Bounds for Two-Way Relay ChannelsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2008
- Joint Relaying and Network Coding in Wireless NetworksPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2007
- Achievable Rate Region of a Two Phase Bidirectional Relay ChannelPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2007
- Coded Bi-directional RelayingPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2006
- The MIMO ARQ Channel: Diversity–Multiplexing–Delay TradeoffIEEE Transactions on Information Theory, 2006
- Two-Way Radio Networks with a Star TopologyPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2006
- On the Achievable Diversity–Multiplexing Tradeoff in Half-Duplex Cooperative ChannelsIEEE Transactions on Information Theory, 2005