Analysis of conditional error rate and combining schemes in HARQ
Article
Article Title | Analysis of conditional error rate and combining schemes in HARQ |
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ERA Journal ID | 4462 |
Article Category | Article |
Authors | Long, Hang (Author), Xiang, Wei (Author), Shen, Shanshan (Author), Zhang, Yueying (Author), Zheng, Kan (Author) and Wang, Wenbo (Author) |
Journal Title | IEEE Transactions on Signal Processing |
Journal Citation | 60 (5), pp. 2677-2682 |
Number of Pages | 6 |
Year | 2012 |
Place of Publication | United States |
ISSN | 1053-587X |
1941-0476 | |
Digital Object Identifier (DOI) | https://doi.org/10.1109/TSP.2012.2184100 |
Web Address (URL) | https://ieeexplore.ieee.org/document/6129543 |
Abstract | In hybrid automatic repeat request (HARQ), maximum ratio combining (MRC) is usually employed at the receiver if the retransmission signal is the same as that in the first transmission. However, conventional performance analysis of HARQ and MRC does not consider that all previous transmissions fail. In this paper, we analyze the conditional error rate of HARQ with arbitrary combining schemes. Both the theoretical and approximate expressions of the conditional error rate are derived. Our analytical and simulation results reveal that conventional MRC is not optimum for HARQ, especially when the packet is short or the channel gain of the first transmission is much better than that of retransmission. |
Keywords | conditional error rate; hybrid automatic repeat request (HARQ); maximum ratio combining (MRC) |
ANZSRC Field of Research 2020 | 400607. Signal processing |
400608. Wireless communication systems and technologies (incl. microwave and millimetrewave) | |
490404. Combinatorics and discrete mathematics (excl. physical combinatorics) | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Beijing University of Posts and Telecommunications, China |
Department of Electrical, Electronic and Computer Engineering | |
Chinese Academy of Sciences, China | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q164y/analysis-of-conditional-error-rate-and-combining-schemes-in-harq
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