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Coding and scheduling for efficient loss-resilient data broadcasting

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3 Author(s)
Foltz, K. ; California Inst. of Technol., Pasadena, CA, USA ; Lihao Xu ; Bruck, J.

This paper examines the problem of sending data to clients over a broadcast channel in a way that minimizes the clients' expected waiting time for this data. This channel, however, is not completely reliable, and packets are occasionally lost. If items consist of k packets, k large, the loss of even a single packet can increase the expected waiting time by 167%. We propose and analyze two solutions that use coding to reduce this degradation. The resulting degradation is 67% for the first solution and less than 1% for the second. The second solution is extended to combat up to t packet losses per data item for any t≪k. This solution maintains near-optimal performance even with packet losses.

Published in:

Information Theory, 2003. Proceedings. IEEE International Symposium on

Date of Conference:

29 June-4 July 2003