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arXiv · 2209.12785

Outage Performance of Cross-Packet HARQ

Jiahui Feng·Zheng Shi·Guanghua Yang·Nikolaos I. Miridakis·Shaodan Ma·Theodoros A. Tsiftsis
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Abstract

As opposed to hybrid automatic repeat request with incremental redundancy (HARQ-IR) that all the resources are occupied to resend the redundant information, cross-packet HARQ (XP-HARQ) allows the introduction of new information into retransmissions to substantially exploit the remaining resources. This letter provides a profound investigation into the outage performance of XP-HARQ. In particular, the exact outage expression of XP-HARQ is derived if the maximum number of transmissions is two, and tight outage bounds are obtained for more than two transmissions. Moreover, the asymptotic outage analysis of XP-HARQ in the high signal-to-noise ratio (SNR) regime is carried out not only to simplify the outage expression, but also to show that full time diversity is achievable by XP-HARQ. The simulation results are eventually presented for verifications.

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Jiahui Feng, Zheng Shi, Guanghua Yang, Nikolaos I. Miridakis, Shaodan Ma, Theodoros A. Tsiftsis. 2022-09-23. Outage Performance of Cross-Packet HARQ. https://arxiv.org/abs/2209.12785

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