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In this paper, performance of hybrid automatic repeat request with incremental redundancy (HARQ-IR) over Rayleigh fading channels is investigated. Different from prior analysis, time correlation in the channels is considered. Under…

Information Theory · Computer Science 2022-09-30 Zheng Shi , Haichuan Ding , Shaodan Ma , Kam-Weng Tam

The throughput achievable in truncated Hybrid ARQ protocol (HARQ) using incremental redundancy (IR) in analyzed when transmitting over a block-fading channel whose state is unknown at the transmitter. We allow the transmission lengths to…

Information Theory · Computer Science 2012-07-03 Leszek Szczecinski , Ciro Correa , Luciano Ahumada

This paper proposes a general analytical approach to derive the outage probability of hybrid automatic repeat request with incremental redundancy (HARQ-IR) over correlated fading channels in closed-form. Unlike prior analyses, the…

Information Theory · Computer Science 2022-09-28 Zheng Shi , Shaodan Ma , Guanghua Yang , Kam Weng Tam , Ming-Hua Xia

In this paper, outage performance of hybrid automatic repeat request with incremental redundancy (HARQ-IR) is analyzed. Unlike prior analyses, time-correlated Nakagami-$m$ fading channel is considered. The outage analysis thus involves the…

Information Theory · Computer Science 2017-06-02 Zheng Shi , Shaodan Ma , Guanghua Yang , Kam-Weng Tam , Minghua Xia

This paper analyzes the performance of cooperative hybrid automatic repeat request with incremental redundancy (HARQ-IR) and proposes a new approach of outage probability approximation for performance analysis. A general time-correlated…

Information Theory · Computer Science 2022-09-27 Zheng Shi , Haichuan Ding , Shaodan Ma , Kam-Weng Tam , Su Pan

In this paper, we investigate the effectiveness of the hybrid automatic repeat request (HARQ) technique in providing high-reliability and low-latency in the finite blocklength (FBL) regime in a single user uplink scenario. We characterize…

Information Theory · Computer Science 2021-10-06 Faisal Nadeem , Yonghui Li , Branka Vucetic , Mahyar Shirvanimoghaddam

Hybrid Automatic Repeat Request (HARQ) is a high performance communication protocol, leading to effective use of the wireless channel and the resources with only limited feedback about the channel state information (CSI) to the transmitter.…

Information Theory · Computer Science 2013-12-04 Yi Li , M. Cenk Gursoy , Senem Velipasalar

This paper analyzes Type I hybrid automatic repeat request (HARQ) over time-correlated Rayleigh fading channels. Due to the presence of channel time correlation, the analysis is more challenging than the prior analysis in the literature.…

Information Theory · Computer Science 2022-09-27 Zheng Shi , Shaodan Ma , Kam-Weng Tam

Terahertz (THz) communications are envisioned to be a promising technology for 6G thanks to its broad bandwidth. However, the large path loss, antenna misalignment, and atmospheric influence of THz communications severely deteriorate its…

Information Theory · Computer Science 2023-04-25 Ziyang Song , Zheng Shi , Jiaji Su , Qingping Dou , Guanghua Yang , Haichuan Ding , Shaodan Ma

This letter studies the throughput and the outage probability of spectrum sharing networks utilizing hybrid automatic repeat request (HARQ) feedback. We focus on the repetition time diversity and the incremental redundancy HARQ protocols…

Information Theory · Computer Science 2013-10-16 Behrooz Makki , Alexandre Graell i Amat , Thomas Eriksson

This paper studies the performance of hybrid-ARQ (automatic repeat request) in Rayleigh block fading channels. The long-term average transmitted rate is analyzed in a fast-fading scenario where the transmitter only has knowledge of channel…

Information Theory · Computer Science 2009-09-17 Peng Wu , Nihar Jindal

This letter studies the power-limited throughput of a communication system utilizing incremental redundancy (INR) hybrid automatic repeat request (HARQ). We use some recent results on the achievable rates of finite-length codes to analyze…

Information Theory · Computer Science 2016-11-15 Behrooz Makki , Tommy Svensson , Michele Zorzi

Energy efficiency of three common hybrid automatic repeat request (HARQ) schemes including Type I HARQ, HARQ with chase combining (HARQ-CC) and HARQ with incremental redundancy (HARQ-IR), is analyzed and joint power allocation and rate…

Information Theory · Computer Science 2022-09-29 Zheng Shi , Shaodan Ma , Guanghua Yang , Mohamed-Slim Alouini

We analyze the opportunistic relaying based on HARQ transmission over the block-fading channel with absence of channel state information (CSI) at the transmitter nodes. We assume that both the source and the relay are allowed to vary their…

Information Theory · Computer Science 2017-02-27 Saeed R. Khosravirad , Leszek Szczecinski , Fabrice Labeau

This paper addresses robust communication on a fading relay channel in which the relay is connected to the decoder via an out-of-band digital link of limited capacity. Both the source-to-relay and the source-to-destination links are subject…

Information Theory · Computer Science 2013-03-21 Seok-Hwan Park , Osvaldo Simeone , Onur Sahin , Shlomo Shamai

This paper investigates the performance of relay networks in the presence of hybrid automatic repeat request (ARQ) feedback and adaptive power allocation. The throughput and the outage probability of different hybrid ARQ protocols are…

Information Theory · Computer Science 2016-11-17 Behrooz Makki , Thomas Eriksson , Tommy Svensson

Although terahertz (THz) communications can provide mobile broadband services, it usually has a large path loss and is vulnerable to antenna misalignment. This significantly degrades the reception reliability. To address this issue, the…

Information Theory · Computer Science 2022-09-29 Ziyang Song , Zheng Shi , Qingping Dou , Guanghua Yang , Yunfei Li , Shaodan Ma

Terahertz (THz) communication is one of the most promising candidates to accommodate high-speed mobile data services. This paper proposes a secure hybrid automatic repeat request with incremental redundancy (HARQ-IR) aided THz communication…

Information Theory · Computer Science 2023-08-01 Yongkang Li , Ziyang Song , Zheng Shi , Qingping Dou , Hongjiang Lei , Jinming Wen , Junbin Fang

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…

Information Theory · Computer Science 2022-09-27 Jiahui Feng , Zheng Shi , Guanghua Yang , Nikolaos I. Miridakis , Shaodan Ma , Theodoros A. Tsiftsis

A variable-length cross-packet hybrid automatic repeat request (VL-XP-HARQ) is proposed to boost the spectral efficiency (SE) and the energy efficiency (EE) of communications. The SE is firstly derived in terms of the outage probabilities,…

Information Theory · Computer Science 2023-10-18 Jiahui Feng , Zheng Shi , Yaru Fu , Hong Wang , Guanghua Yang , Shaodan Ma
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