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Superposition-Aided Delay-Constrained Hybrid Automatic Repeat ReQuest

IEEE Transactions on Vehicular Technology, 2010
A novel Multiplexed Hybrid Automatic Repeat reQuest (M-HARQ) scheme is proposed and compared with the conventional scheme in terms of its energy efficiency while satisfying specific delay constraints, where the best transmission strategy is discussed for both schemes.
Rong Zhang, Lajos Hanzo
exaly   +2 more sources

Design and Implementation of an Adaptive Algorithm for Hybrid Automatic Repeat Request

2015 IEEE 18th International Symposium on Design and Diagnostics of Electronic Circuits & Systems, 2015
Transmission efficiency is an interesting topic for data link layer developers. The overhead of protocols and coding should be reduced to a minimum. This maximizes a link throughput. This is especially important for high-speed networks, where a small degradation of efficiency will degrade the throughput by several Gbps.
Lukasz Lopacinski, Rolf Kraemer
exaly   +2 more sources

A Hybrid Automatic Repeat Request (HARQ) with Turbo Codes in OFDM System

2010 International Conference on Computational Intelligence and Software Engineering, 2010
In this paper a hybrid automatic repeat request (HARQ) with turbo codes in OFDM system, and the differences hybrid ARQ methods designed for Turbo-coded transmissions on OFDM are presented. Two kinds of modified methods, one without ARQ and the other one are with HARQ: HARQ type-I and HARQ type-II.
Zhifang Liao
exaly   +2 more sources

Performance Analysis of Basic Automatic Repeat Request Protocols and Hybrid Automatic Repeat Request Protocol

4th International Conference on Communication Engineering and Computer Science (CIC-COCOS’2022), 2022
The size of network and internet traffic is rising spontaneously by the day, with data usage at zettabyte to petabyte scale at an exponential high rate and therefore considered to generate huge traffic along the way which causes the chance of error in transmission to be high as well.
openaire   +1 more source

On the Design of Hybrid Automatic Repeat Request Schemes with Unreliable Feedback

IEEE Transactions on Communications, 2014
\gls{HARQ} schemes are employed in mobile communication systems to reduce the residual Frame Error Rate (FER) after channel decoding. If decoding fails, the receiver requests the transmission of additional redundancy about these frames to improve the decoding success.
Tobias Breddermann   +2 more
openaire   +1 more source

Rethink Hybrid Automatic Repeat reQuest Design for 5G: Five Configurable Enhancements

IEEE Wireless Communications, 2017
Current mobile communications systems have a rather simple and single-mode HARQ functionality that is applied for all services. In this article we argue for having a set of user-centric HARQ enhancements that are configurable in coherence with its service requirements, as a means to more efficiently optimize the end-to-end performance.
Klaus I. Pedersen   +3 more
openaire   +2 more sources

Cooperative Hybrid Automatic Repeat Request Based on the Number of Retransmissions

2019 International Conference on Communication and Electronics Systems (ICCES), 2019
Cooperative communication has great potential to boost the wireless data rates by exploiting the antennas on wireless devices for spacial diversity. Since decode and forward (DF) approach eliminates noise accumulation problem, DF protocol is suitable for relay selection scheme.
R Arpitha, B R Chaithra, Usha Padma
openaire   +1 more source

Hybrid automatic-repeat-reQuest systems for cooperative wireless communications. [PDF]

open access: possible, 2012
As a benefit of achieving a diversity gain and/or a multiplexing gain, MIMO techniques are capable of significantly increasing the achievable throughput and/or the network coverage without additional bandwidth or transmit power. For the sake of striking an attractive trade-off between the attainable diversity gain and/or multiplexing gain, in this ...
openaire   +2 more sources

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