Methods for packet combining in HARQ systems over bursty channels |
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Authors: | Abdel-Ghani A Daraiseh Carl W Baum |
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Affiliation: | (1) Wireless Systems Engineering Department, Northern Telecom, Richardson, TX 75082-4399, USA;(2) Department of Electrical and Computer Engineering, Clemson University, Clemson, SC 29634-0915, USA |
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Abstract: | The performance of ARQ systems can be improved by combining current and prior transmissions at the receiver. Two techniques
for combining outputs in a packet-based communication system are presented. In both techniques the fundamental unit of retransmission
is a packet, and the fundamental unit of combining is a codeword. The techniques are analyzed for a bursty channel and a system
that employs Reed–Solomon coding and bounded-distance errors-and-erasures decoding. Performance results show that the packet-combining
schemes provide significant gains in throughput and reductions in error probability when compared with a system that does
not employ combining.
This revised version was published online in June 2006 with corrections to the Cover Date. |
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