Results 81 to 90 of about 1,852,147 (258)

Hybrid automatic-repeat-reQuest systems for cooperative wireless communications

open access: yes
Hybrid-Automatic-Repeat-reQuest (H-ARQ) has become an indispensable technique in reliable communication systems. Hence, in this paper we review the state-of-art and investigate the performance of H-ARQ in the context of cooperative wireless ...
Ngo, Hoang Anh, Hanzo, Lajos
core   +1 more source

Position-Based Relaying with Hybrid-ARQ for Efficient Ad Hoc Networking

open access: yesEURASIP Journal on Wireless Communications and Networking, 2005
This paper presents and analyzes an integrated, cross-layer protocol for wireless ad hoc networking that utilizes position location (e.g., through an onboard GPS receiver) and jointly performs the operations of network-layer relaying and link-layer ARQ ...
Zhao Bin, Valenti Matthew C
doaj  

Multiplexed Hybrid ARQ for energy efficient transmissions under delay constraints

open access: yes, 2010
A novel Multiplexed Hybrid Automatic Repeat reQuest (M-HARQ) scheme is proposed and compared to the conventional scheme in terms of its energy efficiency, while satisfying specific delay constraints.
R. Zhang   +3 more
core   +1 more source

Channel Constrained Multiple Selective Retransmissions for OFDM System: BER and Throughput Analysis

open access: yesIEEE Access, 2019
Hybrid automatic repeat request (HARQ) retransmission is an effective method to combat time-variant channel fading. Conventional HARQ methods initiate retransmission of failed packet without exploiting channel knowledge.
Taniya Shafique   +2 more
doaj   +1 more source

Corrections to “Efficient Design of Multi-Packet Hybrid ARQ Transmission Scheme Based on Polar Code”

open access: yesIEEE Access, 2020
In the above article [1], we did not pay enough attention to distinguishing the contributions between our work and article [2] clearly. Potential deficiencies in article writing may cause controversy or confusion to readers. We would like to provide some
Hao Liang   +3 more
doaj   +1 more source

Performance analysis of cooperative cognitive radio networks based on hybrid NOMA/OMA and best relay selection

open access: yesIET Communications, 2022
In non‐orthogonal multiple access (NOMA) systems, it may not be advisable to send the superimposed signal of all users to individual users with retransmission requirements during the retransmission phase.
Suoping Li   +4 more
doaj   +1 more source

Throughput-efficient Relay assisted Hybrid ARQ [PDF]

open access: yes2018 15th International Symposium on Wireless Communication Systems (ISWCS), 2018
Reliable data transmission within wireless communication systems can be obtained via various means, including (i) Hybrid Automatic Repeat reQuest (HARQ) mechanisms which allow retransmission of incorrectly decoded packets; (ii) Additional nodes, called relays, which may also help the transmission by retransmitting these packets.
Alaa Khreis   +3 more
openaire   +1 more source

Application of Digital Methods in Polymer Science and Engineering

open access: yesAdvanced Functional Materials, Volume 34, Issue 8, February 19, 2024.
Digital technologies such as machine learning will influence the polymer research in the future. The review summarizes current aspects in all fields of the development chain, highlights current applications, and shows future possibilities. Abstract The development of new polymer materials is an emerging field for more than 100 years.
Timo Schuett   +7 more
wiley   +1 more source

Coding techniques for diversity enhancement of dense wavelength division multiplexing MIMO‐FSO fault protection protocols systems over atmospheric turbulence channels

open access: yesIET Optoelectronics, Volume 18, Issue 1-2, Page 11-31, February-April 2024.
An enhanced transmission is presented in a multiple‐input‐multiple‐output (MIMO) dense‐wavelength division multiplexed (DWDM) free‐space‐optical (FSO) communication link using diversity coding techniques under the effect of turbulent weather phenomenon.
Ebrahim E. Elsayed   +7 more
wiley   +1 more source

Throughput of nonbinary type-II hybrid ARQ with adaptive modulation [PDF]

open access: yes, 2003
Hybrid Automatic-Repeat-reQuest (ARQ) combines the advantages of ARQ and the Forward-Error-Control (FEC), and can achieve good throughput with very low bit error rate (BER). A nonbinary HARQ was proposed and analyzed in terms of throughput.
Li, VOK   +5 more
core   +1 more source

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