IEICE Communications Express
Online ISSN : 2187-0136
ISSN-L : 2187-0136
A joint coding HARQ scheme for N-channel stop-and-wait protocol
Yue WuLukman Abiodun OlawoyinHongwen Yang
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2014 Volume 3 Issue 6 Pages 187-192

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Abstract

N-channel stop-and-wait (SW) hybrid automatic repeat request (HARQ) protocol is widely used in wireless communication systems due to its simplicity and high efficiency. However, different HARQ processes are transmitted over sub-channels with individual encoding. We present a joint coding HARQ scheme in which erroneous codewords of N parallel channels are jointly encoded for retransmissions. Erroneous and retransmitted codewords form a linear concatenated block code which is jointly decoded with a low complexity iterative decoding algorithm. Simulation results show that the normalized throughput performance obtains a significant gain while complexity increasing is limited.

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© 2014 The Institute of Electronics, Information and Communication Engineers
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