Reliability comparison of transmit/receive diversity and error control coding in low‐power medium access control protocols. Issue 4 (1st December 2014)

• Record Type: Journal Article
• Authors: Ghamari, Mohammad; Momahed Heravi, Behzad; Roedig, Utz; Honary, Bahram
• Is Part Of: IET networks. Volume 3:Issue 4(2014)
• Page Start: 284
• Page End: 292
• Publication Date: 2014-12-01
• Subjects: telecommunication network reliability -- telecommunication power management -- access protocols -- wireless channels -- error correction codes; reliability comparison -- transmit‐receive diversity -- error control coding -- low power medium access control protocols -- MAC protocols -- energy constraint wireless embedded devices -- transmission channels -- error correction scheme -- multiple antennas; Computer network architectures -- Periodicals; Computer network protocols -- Periodicals; Information networks -- Periodicals; Telecommunication systems -- Periodicals; 004.605
• DOI: 10.1049/iet-net.2013.0036
• Languages: English
• ISSNs: 2047-4954

Abstract

Abstract : Low‐power medium access control (MAC) protocols used for communication of energy constraint wireless embedded devices do not cope well with situations where transmission channels are highly erroneous. Existing MAC protocols discard corrupted messages which lead to costly retransmissions. To improve transmission performance, it is possible to include an error correction scheme and transmit/receive diversity. It is possible to add redundant information to transmitted packets in order to recover data from corrupted packets. It is also possible to make use of transmit/receive diversity via multiple antennas to improve error resiliency of transmissions. Both schemes may be used in conjunction to further improve the performance. In this study, the authors show how an error correction scheme and transmit/receive diversity can be integrated in low‐power MAC protocols. Furthermore, the authors investigate the achievable performance gains of both methods. This is important as both methods have associated costs (processing requirements; additional antennas and power) and for a given communication situation it must be decided which methods should be employed. The authors' results show that, in many practical situations, error control coding outperforms transmission diversity; however, if very high reliability is required, it is useful to employ both schemes together.