Results 81 to 90 of about 2,052 (205)
International Journal of Communication Systems, Volume 37, Issue 13, 10 September 2024.This paper undertakes a review and analysis of advanced channel coding techniques with the aim of their scalability towards B5G/6G networks scenario. A comparative study is presented for channel coding candidates of futuristic networks. Concatenated and derived codes of convolutional, polar, LDPC, Rateless, and Space‐time coding schemes are reviewed ...
Abhilasha Gautam +2 more
wiley +1 more source
Predicting burst error statistics of digital wireless systems with HARQ [PDF]
, 2013 Hybrid Automatic Retransmission reQuest (HARQ) is an effective technique to improve the reliability of wireless communication systems by detecting, correcting, and retransmitting the erroneous packets.
Dongfeng Yuan +9 more
core +1 more source
Comparison of error control schemes in wireless sensor networks
Tongxin xuebao, 2008 Energy efficiency analyses of automatic repeat request （ARQ） and forward error correction （FEC） techniques were presented. Chase combining hybrid ARQ （HARQ） was proposed to achieve adaptive error control in wireless sensor networks.
TIAN Zhen +2 more
doaj +2 more sources
Enhanced semantic communication schemes for speech signals
Electronics Letters, Volume 60, Issue 8, April 2024.Two models to improve semantic communication systems are introduced. The first utilizes CBAM, considering attention in both channel and spatial domains, while the second uses the ECA network for complexity reduction. Experimental results demonstrate that the CBAM‐enhanced model notably enhances SDR performance in comparison to the existing SENet model,
Yerin Yeo +2 more
wiley +1 more source
Optimized HARQ Schemes Employing Multi-Rate Coupled LDPC Codes
IEEE AccessThis paper presents a hybrid automatic repeat request (HARQ) scheme based on multi-rate coupled low-density parity-check (LDPC) codes, which can be efficiently implemented using existing 5G New Radio (NR) LDPC matrices.
Yiyun Jian +2 more
doaj +1 more source
Performance Evaluation of HARQ Schemes for the Internet of Things
Computers, 2018 Hybrid Automatic Repeat reQuest (HARQ) techniques are widely employed in the most important wireless systems, e.g., the Long Term Evolution (LTE) cellular standard, to increase the reliability of the communication.
Lorenzo Vangelista, Marco Centenaro
doaj +1 more source
Forecast combination puzzle in the HAR model
Journal of Forecasting, Volume 43, Issue 1, Page 118-137, January 2024.Abstract The heterogeneous autoregressive (HAR) model has become the benchmark model for predicting realized volatility, given its simplicity and consistent empirical performance. Many modifications and extensions to the original model have been proposed that often only provide incremental forecast improvements.
Adam Clements, Andrey L Vasnev
wiley +1 more source
Machine learning assisted adaptive LDPC coded system design and analysis
IET Communications, Volume 18, Issue 1, Page 1-10, January 2024.A learning‐aided adaptive modulation and coding system for short block length scenarios are proposed. This is applicable to Internet of Things and URLLC cases. Abstract This paper proposes a novel machine learning (ML) assisted low‐latency low density parity check (LDPC) coded adaptive modulation (AM) system, where short block‐length LDPC codes are ...
Cong Xie +2 more
wiley +1 more source
Dynamic pre-allocation HARQ (DP-HARQ) in IEEE 802.16j mobile multihop relay (MMR) [PDF]
, 2012 [[abstract]]IEEE 802.16 is defining standards for Mobile Multihop Relay (MMR). The major purpose of MMR is to efficiently extend the coverage of a BS and to enhance the system throughput.
K.-W. Cheng;J.-C. Chen
core
Performance Analysis of HARQ for Moment Generating Function in Nakagami-m Fading Channels
工程科学与技术, 2014 :A joint optimization algorithm which combines M-QAM with HARQ protocol is proposed for the multi-branch two-top cooperation diversity system to minimize the symbol error rate (SER) and maximize the throughput. Using moment generating function (MGF), the
陈昌川, 饶毓, 赵超莹
doaj