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A Rehearsal-Assisted Distributed MAC Protocol for TDD-CDMA Based Multihop Networks

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5 Author(s)
Yan Zhang ; Shanghai Jiao Tong Univ., Shanghai ; Yuhang Yang ; Maode Ma ; Dan Shang
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A multihop architecture of a CDMA system will bring new challenges to the MAC protocol design due to its interference-limited nature. In this letter, a new rehearsal-assisted distributed MAC protocol has been proposed. This protocol makes use of a separated control channel to resolve conflictions and to gauge the multiple access interference (MAI). The rehearsal procedure tests the mutual influence between quasi- access link and other ongoing communications via distributed power control. A new link will be set up only when there is no negative feedback from the rehearsal. Thus the on-going links can be protected from deterioration due to an unregulated new access. Simulation results show a significant improvement on throughput by our protocol.

Published in:

Communications Letters, IEEE  (Volume:11 ,  Issue: 11 )