On exploiting idle channels in opportunistic multichannel ALOHA

Authors:
Toan To;Jinho Choi
Affiliations:
Wireless Communication Research Lab, School of Engineering, Swansea University, Wales, UK;Wireless Communication Research Lab, School of Engineering, Swansea University, Wales, UK
Venue:
IEEE Communications Letters
Year:
2010

Citing 2
Cited 0

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Exploiting decentralized channel state information for random access

IEEE Transactions on Information Theory

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Abstract

Opportunistic multichannel ALOHA is a random access protocol that can exploit both multiuser and multichannel diversities by taking the advantage of fading channel. However, this protocol is inefficient as inherited from contention based random access in the sense that there is a noticeable number of idle channels in each time slot. To reduce this wastage, we propose a simple extension to the transmission policy so that these idle channels can be exploited, which in consequence leads to a significant improvement in term of maximum throughput.