Exploiting Multi-User Diversity and Multi-Hop Diversity in Dual-Hop Broadcast Channels

The authors propose joint user-and-hop scheduling over dual-hop block-fading broadcast channels in order to exploit multi-user diversity gains and multi-hop diversity gains all together. To achieve this objective, the first and second hops are scheduled opportunistically based on the channel state information. The joint scheduling problem is formulated as maximizing the weighted sum of the long term achievable rates of the users under a stability constraint, which means that in the long term the rate received by the relay should equal the rate transmitted by it, in addition to power constraints.

Provided by: Institute of Electrical & Electronic Engineers Topic: Networking Date Added: May 2013 Format: PDF

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