Results 21 to 30 of about 2,280 (244)

Performance of the turbo hybrid automatic repeat request system type II [PDF]

open access: yes1999 Information Theory and Networking Workshop (Cat. No.99EX371), 2003
In many applications it is necessary to maintain an error-free transmission of data. For low-quality time varying channels, channel coding alone often cannot ensure this and the employment of automatic repeat requests (ARQ) is unavoidable. For achieving high efficiency, a combination of both channel coding and ARQ, also referred to as hybrid ARQ (HARQ),
Hamorsky, J., Hanzo, L.
openaire   +1 more source

Coordinated Hybrid Automatic Repeat Request; Extended Version

open access: yesCoRR, 2014
We develop a coordinated hybrid automatic repeat request (HARQ) approach. With the proposed scheme, if a user message is correctly decoded in the first HARQ rounds, its spectrum is allocated to other users, to improve the network outage probability and the users' fairness.
Behrooz Makki   +3 more
openaire   +2 more sources

Opportunities and Challenges for Error Correction Scheme for Wireless Body Area Network—A Survey

open access: yesJournal of Sensor and Actuator Networks, 2018
This paper offers a review of different types of Error Correction Scheme (ECS) used in communication systems in general, which is followed by a summary of the IEEE standard for Wireless Body Area Network (WBAN). The possible types of channels and network
Rajan Kadel   +3 more
doaj   +1 more source

HARQ Assisted Short-Packet Communications for Cooperative Networks Over Nakagami-m Fading Channels

open access: yesIEEE Access, 2020
Considering the coverage and short-packet communication requirements, this paper proposes a hybrid automatic repeat request (HARQ) assisted short-packet communications for cooperative Internet of Things (IoT) networks, where the signals are transmitted ...
Yucui Yang, Yi Song, Fenglian Cao
doaj   +1 more source

Power allocation in repetition time diversity hybrid automatic repeat request feedback [PDF]

open access: yes2012 IEEE Wireless Communications and Networking Conference (WCNC), 2012
This paper addresses the problem of optimal power allocation for hybrid automatic repeat request (HARQ) feedback over slowly-fading channels. We mainly focus on the repetition time diversity HARQ scheme where the results are obtained for both continuous and bursting communication models.
Behrooz Makki   +2 more
openaire   +1 more source

TCP Performance Over Satellite-Based Hybrid FSO/RF Vehicular Networks: Modeling and Analysis

open access: yesIEEE Access, 2021
Recent years have witnessed a growing interest in Internet access from space assisted by low earth orbit (LEO) satellite networks. In the domain of the last-mile access for the Internet of Vehicles (IoV), hybrid free-space optical (FSO)/radio-frequency ...
Thang K. Nguyen   +3 more
doaj   +1 more source

Performance Evaluation of HARQ Technique with UMTS Turbo Code [PDF]

open access: yesTelfor Journal, 2011
The hybrid automatic repeat request technique (HARQ) represents the error control principle which combines an error correcting code and automatic repeat request procedure (ARQ), within the same transmission system.
S. S. Brkić, P. N. Ivaniš
doaj  

Throughput and Delay Analysis of Cognitive Go-Back-N Hybrid Automatic Repeat reQuest Using Discrete-Time Markov Modelling

open access: yesIEEE Access, 2016
Cognitive radio (CR) techniques have been proposed for improving the spectral efficiency by exploiting the temporarily unoccupied segments of the licensed spectrum, provided that the transmission of primary users (PUs) is not hampered.
Ateeq Ur Rehman   +4 more
doaj   +1 more source

Goodput Maximization of HARQ-IR Over Arbitrarily Correlated Rician Fading Channels

open access: yesIEEE Access, 2018
This paper investigates the optimal design of hybrid automatic repeat request with incremental redundancy (HARQ-IR) over arbitrarily correlated Rician fading channels for goodput maximization.
Zheng Shi   +4 more
doaj   +1 more source

New Wi-Fi technology survey after Wi-Fi6

open access: yesDianzi Jishu Yingyong, 2020
Wi-Fi6 standard will be major Wi-Fi technology dominated for deployment after 2020. But to support increasing bandwidth requirements and number of access devices per year, Wi-Fi technology and throughput still need to be further developed and improved ...
Cheng Gang, Yang Zhijie
doaj   +1 more source

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