An Adaptive FEC Scheme for Firm Real-Time Multimedia Communications in Wireless Networks

Kyong Hoon KIM  Jong KIM  Sung Je HONG  

Publication
IEICE TRANSACTIONS on Communications   Vol.E88-B   No.7   pp.2794-2801
Publication Date: 2005/07/01
Online ISSN: 
DOI: 10.1093/ietcom/e88-b.7.2794
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Section on Mobile Multimedia Communications)
Category: 
Keyword: 
wireless technologies,  real-time multimedia communications,  window-constrained task model,  (m, k)-firm task model,  error correcting codes,  

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Summary: 
The technological development of wireless environment has made real-time multimedia communications possible in wireless networks. Many studies have been done on real-time communications in wireless networks in order to overcome a higher bit error rate in wireless channels. However, none of work deals with firm real-time communications which can be applied to multimedia communications. In this paper, we propose an adaptive error correcting scheme for firm real-time multimedia communications in wireless networks in order to maximize the expected net profit. The proposed scheme adaptively selects an error correcting code under the current air state and the message state of a message stream. Throughout simulation results, we show that the suggested scheme provides more profit than single error-correcting code schemes.