Results 161 to 170 of about 2,052 (205)
Multi-Layer HARQ With Delayed Feedback [PDF]
IEEE Transactions on Wireless Communications, 2020 In order to improve the transmission reliability in current wireless communication systems, the Hybrid Automatic ReQuest (HARQ) protocol is employed to manage the unknown time-varying channel. The acknowledgments are fed back with delay on the return link.
Philippe Ciblat +2 more
exaly +4 more sources
Outage Performance of Cross-Packet HARQ
IEEE Wireless Communications Letters, 2022 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.
Shaodan Ma +2 more
exaly +3 more sources
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Energy Efficiency of Adaptive HARQ
IEEE Transactions on Communications, 2016In this work, various channel coding schemes that can be used in hybrid automatic repeat request (HARQ) transmission protocols are investigated from an energy efficiency point of view. Conventional HARQ, where only one bit is used to inform the transmitter about the decoding success or failure, is compared to adaptive HARQ where the transmitter adapts ...
Fabrice Labeau +2 more
exaly +2 more sources
2020 International Wireless Communications and Mobile Computing (IWCMC), 2020
In this paper, we propose two multi-bit feedback methods for hybrid automatic repeat request (HARQ). Both methods take into consideration of the coding gain of the forward error-correction codes. One method only considers the coding gain of the first transmission, which is named accumulated power (ACP) method. The other method considers the coding gain
Chulong Liang +3 more
openaire +1 more source
In this paper, we propose two multi-bit feedback methods for hybrid automatic repeat request (HARQ). Both methods take into consideration of the coding gain of the forward error-correction codes. One method only considers the coding gain of the first transmission, which is named accumulated power (ACP) method. The other method considers the coding gain
Chulong Liang +3 more
openaire +1 more source
Finite Block-Length Analysis of the Incremental Redundancy HARQ [PDF]
IEEE Wireless Communications Letters, 2014 This letter studies the power-limited throughput of a communication system utilizing incremental redundancy (INR) hybrid automatic repeat request (HARQ).
Behrooz Makki +2 more
exaly +2 more sources
On the Performance of HARQ Protocols With Blanking in NOMA Systems [PDF]
IEEE Transactions on Wireless Communications, 2020 In this paper, we investigate the throughput performance of single-packet and multi-packet hybrid-automatic repeat request (HARQ) with blanking for downlink non-orthogonal multiple access (NOMA) systems.
Wenjuan Yu +2 more
exaly +3 more sources
2013 IEEE International Conference on Communications (ICC), 2013
In this paper, we consider a hybrid automatic repeat request (HARQ) system with bit-interleaved coded modulation over wireless channels. At higher-order modulations, bit-level combining of log-likelihood ratios (LLRs) is sub-optimal compared to symbol-level maximal ratio combining (MRC).
Mostafa El-Khamy +2 more
openaire +1 more source
In this paper, we consider a hybrid automatic repeat request (HARQ) system with bit-interleaved coded modulation over wireless channels. At higher-order modulations, bit-level combining of log-likelihood ratios (LLRs) is sub-optimal compared to symbol-level maximal ratio combining (MRC).
Mostafa El-Khamy +2 more
openaire +1 more source
An Intelligent HARQ Scheme for HSDPA
IEEE Transactions on Vehicular Technology, 2011In this paper, we propose an intelligent hybrid automatic repeat request (iHARQ) scheme for high-speed downlink packet access (HSDPA) systems. The challenge in the hybrid automatic repeat request (HARQ) control problem of HSDPA is how to choose an appropriate modulation and coding scheme (MCS) for initial transmission in the situation wherein the ...
Chiao-Yin Huang +3 more
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Effective Capacity for Renewal Service Processes With Applications to HARQ Systems [PDF]
IEEE Transactions on Communications, 2019 Considering the widespread use of effective capacity in cross-layer design and the extensive existence of renewal service processes in communication networks, this paper thoroughly investigates the effective capacity for renewal processes.
Shaodan Ma +2 more
exaly +2 more sources
2012 50th Annual Allerton Conference on Communication, Control, and Computing (Allerton), 2012
In wireless cellular systems, Hybrid ARQ (HARQ) is used at the link level to guarantee a low BLER in spite of variations in the wireless link quality. However, HARQ retransmissions come at the cost of resources and impact the link throughput. We are interested in maximizing the link throughput in the presence of HARQ.
Vignesh Sethuraman +2 more
openaire +1 more source
In wireless cellular systems, Hybrid ARQ (HARQ) is used at the link level to guarantee a low BLER in spite of variations in the wireless link quality. However, HARQ retransmissions come at the cost of resources and impact the link throughput. We are interested in maximizing the link throughput in the presence of HARQ.
Vignesh Sethuraman +2 more
openaire +1 more source