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Application layer hybrid error correction with reed-solomon code for DVB services over wireless LANs

Publication by Guoping Tan, Thorsten Herfet
Published in 2007 International Conference on Wireless Communications, Networking and Mobile Computing, 2007


In this paper, an application layer hybrid error correction scheme with Reed-Solomon (HEC-RS) code is proposed to satisfy the very low packet loss ratio (PLR) requirement under a strict latency limit for DVB services over wireless LANs. The PLR performance of the HEC-RS scheme is analyzed and compared with the HEC scheme based on the packet repetition (HEC-PR) technique and an adaptive forward error correction (AFEC) scheme based on RS codes. It is found that the needed redundancy information (RI) of the HEC-RS scheme is much less than that of the AFEC scheme. However, if the group size and link PLR are small enough, the needed RI of the HEC-RS scheme is proven to be much more than that of the HEC-PR scheme. As a result, the optimum performance can be achieved when combining the HEC-PR and the HEC-RS scheme.