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Joint Encoding and Decoding Optimization of LT Codes over Noise Channels

Mingli Chi, Wenzhu Sun
2018 EAI Endorsed Transactions on Cognitive Communications  
The low-degree variable nodes and high residual errors of Belief Propagation (BP) decoding are key factors of high error floor of LT Codes over noise channels.  ...  A joint encoding and decoding scheme are proposed to lower this error floor.  ...  performance and lower the error floor of LT Codes.  ... 
doi:10.4108/eai.14-1-2019.161365 fatcat:rkpv7euzardkvp5jlgqzhwpqgu

A low-cost serial decoder architecture for low-density parity-check convolutional codes

S. Bates, Zhengang Chen, L. Gunthorpe, A.E. Pusane, K.Sh. Zigangirov, Daniel J. Costello
2008 IEEE Transactions on Circuits and Systems Part 1: Regular Papers  
With a maximum of 100 iterations, the design achieves up to 9-Mb/s throughput using only a very small portion of the field-programmable gate array resources.  ...  It has been shown that LDPC-CCs can achieve comparable performance to LDPC block codes with constraint length much less than the block length.  ...  With , a frame is processed only as many times as needed to properly decode it, due to the intermediate CRC verification of frames.  ... 
doi:10.1109/tcsi.2008.918002 fatcat:2xgyexdltfbdfnh5vomkamxkvq

Towards 6G wireless communication networks: vision, enabling technologies, and new paradigm shifts

Xiaohu You, Cheng-Xiang Wang, Jie Huang, Xiqi Gao, Zaichen Zhang, Mao Wang, Yongming Huang, Chuan Zhang, Yanxiang Jiang, Jiaheng Wang, Min Zhu, Bin Sheng (+38 others)
2020 Science China Information Sciences  
will enable a new range of smart applications with the aid of artificial intelligence (AI) and big data technologies.  ...  Clearly, 6G with additional technical requirements beyond those of 5G will enable faster and further communications to the extent that the boundary between physical and cyber worlds disappears.  ...  To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.  ... 
doi:10.1007/s11432-020-2955-6 fatcat:bf4wxtlfsbg7noe5nshf3pz3qq

PHY, MAC, and RLC Layer Based Estimation of Optimal Cyclic Prefix Length

Adriana Lipovac, Vlatko Lipovac, Borivoj Modlic
2021 Sensors  
It turns out that, for given protective coding, the optimal CP length is determined by the appropriate rms delay spread of the channel power delay profile part remaining outside the CP span.  ...  of LTE.  ...  Figure 4 . 4 AWGN uncoded vs. turbo-coded BLER for 16 QAM with L = 6144. Figure 4 . 4 AWGN uncoded vs. turbo-coded BLER for 16 QAM with L = 6144.  ... 
doi:10.3390/s21144796 fatcat:gf5wr3zb7bddxd4kww3gzlujqe

Signal definition and resource management techniques for upcoming communication and broadcasting systems

Charbel Abdel Nour
2020 Zenodo  
The work concerns code design for binary and non-binary codes with simplified decoding algorithms, their association with high order modulations and multiple antennas, the study of high diversity schemes  ...  The first targets devising algorithms for coded modulations. It was the subject of 9 supervised PhDs and one post-doc.  ...  The insertion of this symbol transformation has proven to considerably lower error floors by increasing the coding gain by avoiding the repetition of error-prone competing sequences at both decoders.  ... 
doi:10.5281/zenodo.4968707 fatcat:d2zvqd5l5vhq7j6li5kwyc65je

Signal definition and resource management techniques for upcoming communication and broadcasting systems

Charbel Abdel Nour
2020 Zenodo  
The work concerns code design for binary and non-binary codes with simplified decoding algorithms, their association with high order modulations and multiple antennas, the study of high diversity schemes  ...  The first targets devising algorithms for coded modulations. It was the subject of 9 supervised PhDs and one post-doc.  ...  The insertion of this symbol transformation has proven to considerably lower error floors by increasing the coding gain by avoiding the repetition of error-prone competing sequences at both decoders.  ... 
doi:10.5281/zenodo.5020532 fatcat:nlqm7ld62nhpxiygmjt5sy5m54

Two-dimensional barcodes for mobile phones

Sarah Lyons, Frank R. Kschischang
2010 2010 25th Biennial Symposium on Communications  
A channel model was established and subsequent simulation results led to the design of a colour barcode with encoding done in the Discrete Cosine Transform domain.  ...  As a result, a new barcode was designed to exploit the low-pass characteristic of a camera phone channel and is presented as a means of facilitating wireless optical communication with mobile phones.  ...  The HCCB includes CRC (Cyclic Redundancy Check) error-detection and Reed-Solomon coding for error-correction.  ... 
doi:10.1109/bsc.2010.5472949 fatcat:zevywgk7ajg4rex34ulmadriri

Is Satellite Ahead of Terrestrial in Deploying NOMA for Massive Machine-Type Communications?

Antonio Arcidiacono, Daniele Finocchiaro, Riccardo De Gaudenzi, Oscar del Rio-Herrero, Stefano Cioni, Marco Andrenacci, Riccardo Andreotti
2021 Sensors  
This paper presents the key features of the first NOMA-based satellite network, presenting not only the underlying technical solutions and measured performance but also the related deployment over the  ...  These pioneering NOMA satellite technology developments and in-the-field deployments open up the possibility of developing and exploiting 5G mMTC satellite- and terrestrial-based systems in a synergic  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/s21134290 pmid:34201830 pmcid:PMC8271421 fatcat:nny6j4napre3hc26nupkp2q7pa

Application of Rule-Based Expert Systems and Dynamic-Link Libraries to Enhance Hardware-in-The-Loop Simulation Results

Pedro Miguel Ortega-Cabezas, partment of Electric, Electronic and Control Engineering, UNED, Juan del Rosal, 12, Ciudad Universitaria, 28040 Madrid, Spain., Antonio Colmenar-Santos, David Borge-Diez, Jorge Juan Blanes-Peiró
2019 Journal of Software  
In this case-study, the execution time is not considered as the supplier in charge of coding the software must guarantee a CPU charge lower than 80%.  ...  When using this concept in this paper, the meaning is that the software is properly coded, but it does not behave well due to a design error (specification issue).  ...  and automatic Error 1% Error 2% Error 3% Error 4% Error 5% Number of test-cases executed verification of the results obtained in the HIL simulation.  ... 
doi:10.17706/jsw.14.6.265-292 fatcat:kppew52blfbvhdcwxctqb6cmwy

A review of communication-oriented optical wireless systems

Deva K Borah, Anthony C Boucouvalas, Christopher C Davis, Steve Hranilovic, Konstantinos Yiannopoulos
2012 EURASIP Journal on Wireless Communications and Networking  
This article concludes with hybrid optical wireless/radio-frequency (OW/RF) systems that employ an additional RF link to improve the overall system reliability.  ...  The discussion on outdoor systems focuses on the impact of atmospheric effects on the optical channel and associated mitigation techniques that extend the realizable link lengths and transfer rates.  ...  In [235] , error analysis for turbo codes in hybrid channels showing trade-offs between RF and OW SNRs is described.  ... 
doi:10.1186/1687-1499-2012-91 fatcat:pvl6mfuggbbnjohm4xmctuqgzy

Design Methodology for Industrial Internet-of-Things Wireless Systems

Carlos Mendes da Costa, Peter Baltus
2020 IEEE Sensors Journal  
He worked as a Researcher with the German Aerospace Center and as a Lecturer with UFRN. Dr. Costa is currently a Postdoctoral Researcher with the Integrated Circuits Group, TU/e.  ...  From 2007 to 2016, he was the Director of the Centre for Wireless Technology, a cooperation between five research chairs that focus on (parts of) wireless systems.  ...  ACKNOWLEDGMENT The authors would like to thank Debasish Mitra for the thorough review.  ... 
doi:10.1109/jsen.2020.3031659 fatcat:tgx36vrigzgjph72d2r2pnxg4u

Spatial Modulation for Generalized MIMO: Challenges, Opportunities, and Implementation

Marco Di Renzo, Harald Haas, Ali Ghrayeb, Shinya Sugiura, Lajos Hanzo
2014 Proceedings of the IEEE  
The paper is concluded with the description of the world's first experimental activities in this vibrant research field.  ...  application areas and their research challenges leading to the analysis of the technological issues associated with the implementation of SM-MIMO.  ...  Otherwise, an error-floor emerges.  ... 
doi:10.1109/jproc.2013.2287851 fatcat:53ei46mwlvdadiugdycgfb7eby

A New Frontier for IoT Security Emerging From Three Decades of Key Generation Relying on Wireless Channels

Junqing Zhang, Guyue Li, Alan Marshall, Aiqun Hu, Lajos Hanzo
2020 IEEE Access  
ACKNOWLEDGEMENTS We would like to thank Mr Yan Wang for his hard work implementing the key generation demonstration system during his final year project.  ...  Hence numerous error correction codes have been used for information reconciliation, including BCH codes [129] - [131] , Reed-Solomon codes [132] , Golay codes [133] - [135] , turbo [136] , polar  ...  Following the error correction procedure, the key agreement can be confirmed by employing CRC.  ... 
doi:10.1109/access.2020.3012006 fatcat:yqlhgsxfjvdwvfo2jcvxxzhj2i

Improved Rate-Compatible Low-Density Parity-Check Codes with Applications to Wireless Channels My Beloved Parents ACKNOWLEDGEMENTS

Shaikh Zaheer
2006 unpublished
It can be seen that the codes with larger girth have lower error floors.  ...  lower error floors [61] .  ... 
fatcat:4gqabc7skza4rail27qyfs5jsa

Reconfigurable Structures for Direct Equalisation in Mobile Receivers [article]

Felip Riera-Palou
2014 arXiv   pre-print
In principle, an infinite number of filter coefficients would be needed to achieve perfect channel inversion. In practice, the number of taps must be finite.  ...  This is especially true in the case of mobile systems, where multipath propagation causes the received signal to be seriously degraded.  ...  Support for Turbo-Codes with 1/3 coding rate and constraint length of 4 is also provided in the UMTS standard.  ... 
arXiv:1401.7216v1 fatcat:z653f7gqavgltehsby4bhtb5cu
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