Research Article
A Cooperative MAC for Distributed Space-Time Coding in an IEEE802.16 Network
@INPROCEEDINGS{10.1109/BROADNETS.2008.4769037, author={Pei Liu and Chun Nie and Thanasis Korakis and Shivendra Panwar}, title={A Cooperative MAC for Distributed Space-Time Coding in an IEEE802.16 Network}, proceedings={2nd International ICST Workshop on Cooperative Wireless Communications and Networking}, publisher={IEEE}, proceedings_a={CONET}, year={2010}, month={5}, keywords={Cooperation distributed space-time coding throughput WiMAX}, doi={10.1109/BROADNETS.2008.4769037} }- Pei Liu
Chun Nie
Thanasis Korakis
Shivendra Panwar
Year: 2010
A Cooperative MAC for Distributed Space-Time Coding in an IEEE802.16 Network
CONET
IEEE
DOI: 10.1109/BROADNETS.2008.4769037
Abstract
In the next-generation WiMAX system, cooperative communication is being considered as an advanced technique to increase the throughput and improve the signal quality. In a cooperative scenario, multiple stations can jointly emulate the antenna elements of a multi-input multi-output (MIMO) system in a distributed fashion. Unlike conventional space-time coding (STC) mechanisms used by a IEEE 802.16e antenna array, distributed space-time coding (DSTC) is employed across the cooperating stations to achieve a higher spatial diversity gain. In this paper, we present the framework for DSTC in the emerging relay-assisted WiMAX network, and develop a cooperative MAC layer protocol, called CoopMAX, for DSTC deployment in a WiMAX system. Through extensive simulations, we evaluate the performance of CoopMAX and show that DSTC can yield capacity gains of up to about 50% for the uplink of an IEEE 802.16 network.