scholarly journals A Comparison of 5G Channel Coding Techniques

2020 ◽  
Vol 4 (2) ◽  
Author(s):  
Darija Čarapić ◽  
Mirjana Maksimović
Keyword(s):  
Mobile Communications ◽  
Channel Coding ◽  
Secure Communication ◽  
Communication Systems ◽  
Data Transfer ◽  
Single Channel ◽  
Modern Society ◽  
Polar Codes ◽  
Coding Scheme ◽  
Wide Range

The rapid, reliable, and secure data transmission in everyday life and numerous applications is one of the crucial demands of modern society. Mobile wireless communications have advanced significantly in recent decades. From the first (1G) to fifth-generation (5G) of mobile communications, the realization of fast and secure communication has always been challenging as data transfer happens in an imperfect channel environment where noise due to amplification, distortion, and other impairments is present. Channel coding is key to establishing fast communication with low error probability, implying that choosing the proper channel coding scheme is a challenging and crucial task. Higher flexibility and reliability, and low computational complexity, latency, and costs are desired coding technique characteristics. This paper focuses on two 5G channel coding techniques, Low-Density Parity-Check (LDPC) and Polar codes. These codes have been examined in the case of variable message sizes and for a wide range of code rates. In addition, different Polar decoding algorithms have been investigated. Simulations results have confirmed that there is no single channel coding scheme able to meet all 5G requirements as well as the superiorities of LDPC codes in case of long messages and Polar codes for short messages. The ability to support a wide range of code lengths and code rates and excellent Bit Error Rate (BER) performances, justify the utilization of LDPC and Polar codes in 5G communication systems.

scholarly journals An overview of channel coding for 5G NR cellular communications

2019 ◽  
Vol 8 ◽  
Author(s):  
Jung Hyun Bae ◽  
Ahmed Abotabl ◽  
Hsien-Ping Lin ◽  
Kee-Bong Song ◽  
Jungwon Lee
Keyword(s):  
Channel Coding ◽  
Ldpc Codes ◽  
Low Latency ◽  
Polar Codes ◽  
Coding Scheme ◽  
Coding Schemes ◽  
Successive Cancellation ◽  
New Radio ◽  
Key Characteristics ◽  
User Data

AbstractA 5G new radio cellular system is characterized by three main usage scenarios of enhanced mobile broadband (eMBB), ultra-reliable and low latency communications (URLLC), and massive machine type communications, which require improved throughput, latency, and reliability compared with a 4G system. This overview paper discusses key characteristics of 5G channel coding schemes which are mainly designed for the eMBB scenario as well as for partial support of the URLLC scenario focusing on low latency. Two capacity-achieving channel coding schemes of low-density parity-check (LDPC) codes and polar codes have been adopted for 5G where the former is for user data and the latter is for control information. As a coding scheme for data, 5G LDPC codes are designed to support high throughput, a variable code rate and length and hybrid automatic repeat request in addition to good error correcting capability. 5G polar codes, as a coding scheme for control, are designed to perform well with short block length while addressing a latency issue of successive cancellation decoding.

Data Transmission Oriented on the Object, Communication Media, Application, and State of Communication Systems

2011 ◽  
Vol 3 (2) ◽  
pp. 51-65
Author(s):  
Mike Sabelkin ◽  
François Gagnon
Keyword(s):  
Data Transmission ◽  
Channel Coding ◽  
Communication Systems ◽  
Reference Model ◽  
Image Transmission ◽  
Wireless Channel ◽  
Superior Performance ◽  
Communication Media ◽  
Fast Analysis ◽  
Wide Range

The proposed communication system architecture is called TOMAS, which stands for data Transmission oriented on the Object, communication Media, Application, and state of communication Systems. TOMAS could be considered a Cross-Layer Interface (CLI) proposal, since it refers to multiple layers of the Open Systems Interconnection Basic Reference Model (OSI). Given particular scenarios of image transmission over a wireless LOS channel, the wireless TOMAS system demonstrates superior performance compared to a JPEG2000+OFDM system in restored image quality parameters over a wide range of wireless channel parameters. A wireless TOMAS system provides progressive lossless image transmission under influence of moderate fading without any kind of channel coding and estimation. The TOMAS system employs a patent pending fast analysis/synthesis algorithm, which does not use any multiplications, and it uses three times less real additions than the one of JPEG2000+OFDM.

scholarly journals Towards A Supranational Media Theory

2018 ◽  
Vol 9 (34) ◽  
pp. 119-139
Author(s):  
Fatih ARTUN ◽  
Sevki ISIKLI
Keyword(s):  
New Media ◽  
Mass Communication ◽  
Communication Systems ◽  
Data Transfer ◽  
New Order ◽  
Social Experiment ◽  
Satellite Systems ◽  
Media Companies ◽  
Wide Range ◽  
The Media

Satellite systems and the Internet have created a significant alternative that undermines the traditional reporting approach and triggered the search for a new order in mass communication. Instant and interactive data transfer systems have transformed local users into global readers and reporters encouraging a trend of democratization relative to freedom of thought and expression. Content providers and distributors in the traditional news industry which is televisions, magazines, radios, newspapers, online platforms, have a wide range of freedom to reach people. Consumers who use interactive mass communication systems have opportunities to interact with the content that is produced in many different centers. However, in the presence of the media defined as a mechanism that manufactures the consent of people for certain ideas, no matter if they are traditional or novel, people sometimes take the position of a buyer or an activist who takes action for a project and sometimes a part of a group of insusceptible people. People think their consent is their freewill without noticing that it is just a product. They feel a sense of gratitude to the ruling elites without noticing that they are the subjects of a social experiment and under the hypnotic influence of the media. Even though the world societies are getting the same content using the same communication technologies thanks to supranational media companies. Particularly because of content created to convey a message, social differences become more explicit and radical rather than the values in common. That’s why conflicts are incited. At the heart of the majority of new media organization debates, the existence of this problematic information lies. This article, which has been prepared with an analytical approach based on a literature review, discusses the theoretical conditions and the possibility of a new supranational media structure that world citizens need as a source of information. The philosophical basis of the supranational media ideal in question is at the heart of cosmopolitan individuals and eternal peace ideals of The Universal Declaration of Human Rights. The present media are unable to produce content that doesn’t try to convey a message as it positions individuals as “consumers or user” rather than “people”. Here, supranational media depicting theoretical conditions doesn’t seek profit. It introduces individuals and cultures with their diverse social layers in the consciousness of being a cosmopolitan. Supranational media’s output is based on notions like science, rights and freedoms, the earth, coexistence, and "humanity”.

Comparison of Sensory Aids in Deaf Children

1989 ◽  
Vol 98 (8_suppl) ◽  
pp. 2-7 ◽  
Author(s):  
Richard T. Miyamoto ◽  
Mary Joe Osberger ◽  
Wendy A. Myres ◽  
Amy J. Robbins ◽  
Kathy Kessler ◽  
...  
Keyword(s):  
Speech Perception ◽  
Cochlear Implant ◽  
Cochlear Implants ◽  
Channel Coding ◽  
Single Channel ◽  
Deaf Children ◽  
Implant Design ◽  
Detection Level ◽  
Coding Scheme ◽  
Auditory Speech

A speech perception hierarchy has been developed and applied to assess the influence of cochlear implants and tactile aids on the acquisition of auditory, speech, and language skills in deaf children. Encouraging improvements were noted with both types of sensory aids at the detection level. The House 3M and Nucleus cochlear implant designs appear to offer advantages over the Tactaid II in providing ancillary speech perception cues to deaf children. Preliminary observations suggest that the multichannel cochlear implant design may be superior to the single-channel coding scheme.

scholarly journals An Overview of Signal Processing Techniques for Terahertz Communications

2020 ◽  
Author(s):  
Hadi Sarieddeen ◽  
Mohamed-Slim Alouini ◽  
Tareq Y. Al-Naffouri
Keyword(s):  
Signal Processing ◽  
Channel Coding ◽  
Communication Systems ◽  
Channel Model ◽  
Mimo Systems ◽  
Future Generation ◽  
Data Detection ◽  
Wide Range ◽  
Processing Techniques ◽  
Signal Processing Techniques

Terahertz (THz)-band communications are a key enabler for future-generation wireless communication systems that promise to integrate a wide range of data-demanding applications. Recent advancements in photonic, electronic, and plasmonic technologies are closing the gap in THz transceiver design. Consequently, prospect THz signal generation, modulation, and radiation methods are converging, and the corresponding channel model, noise, and hardware-impairment notions are emerging. Such progress paves the way for well-grounded research into THz-specific signal processing techniques for wireless communications. This tutorial overviews these techniques with an emphasis on ultra-massive multiple-input multiple-output (UM-MIMO) systems and reconfigurable intelligent surfaces, which are vital to overcoming the distance problem at very high frequencies. We focus on the classical problems of waveform design and modulation, beamforming and precoding, index modulation, channel estimation, channel coding, and data detection. We also motivate signal processing techniques for THz sensing and localization.

Synchronization of Chaotic Circuits with Stochastically-Coupled Network Topology

2021 ◽  
Vol 31 (01) ◽  
pp. 2150015
Author(s):  
Yoko Uwate ◽  
Yoshifumi Nishio ◽  
Thomas Ott
Keyword(s):  
Secure Communication ◽  
Communication Systems ◽  
Small World ◽  
Chaotic Circuit ◽  
Scale Free ◽  
Wide Range ◽  
Scale Free Networks ◽  
Dynamic Topology ◽  
Chaotic Circuits ◽  
Fully Coupled

In recent years, research on synchronization between coupled chaotic circuits has attracted interest in a wide range of fields. This is because the synchronization of coupled chaotic circuits is a multidisciplinary phenomenon that occurs in various applications, such as broadband communication systems or secure communication. In this study, we propose a coupled chaotic circuit network model with stochastic couplings. We investigate the synchronization phenomena observed for the proposed network using different network structures such as fully-coupled, random, small world and scale-free networks. We find that the same synchronization characteristics can be obtained for these networks with a dynamic topology as when the coupling strength is changed in static networks.

scholarly journals Polar Code: An Advanced Encoding And Decoding Architecture For Next Generation 5G Applications

2019 ◽  
Vol 7 (5) ◽  
pp. 26-29
Author(s):  
Kaveri Maltiyar ◽  
Deepti Malviya
Keyword(s):  
Information Theory ◽  
Channel Coding ◽  
Communication Systems ◽  
Error Correcting Code ◽  
Wireless Communication Systems ◽  
Polar Codes ◽  
Next Generation ◽  
Decoding Complexity ◽  
Polar Code ◽  
Paper Review

Polar Codes become a new channel coding, which will be common to apply for next-generation wireless communication systems. Polar codes, introduced by Arikan, achieves the capacity of symmetric channels with “low encoding and decoding complexity” for a large class of underlying channels. Recently, polar code has become the most favorable error correcting code in the viewpoint of information theory due to its property of channel achieving capacity. Polar code achieves the capacity of the class of symmetric binary memory less channels. In this paper review of polar code, an advanced encoding and decoding architecture for next generation applications.

scholarly journals An Overview of Signal Processing Techniques for Terahertz Communications

2020 ◽  
Author(s):  
Hadi Sarieddeen ◽  
Mohamed-Slim Alouini ◽  
Tareq Y. Al-Naffouri
Keyword(s):  
Signal Processing ◽  
Channel Coding ◽  
Communication Systems ◽  
Channel Model ◽  
Mimo Systems ◽  
Future Generation ◽  
Data Detection ◽  
Wide Range ◽  
Processing Techniques ◽  
Signal Processing Techniques

Terahertz (THz)-band communications are a key enabler for future-generation wireless communication systems that promise to integrate a wide range of data-demanding applications. Recent advancements in photonic, electronic, and plasmonic technologies are closing the gap in THz transceiver design. Consequently, prospect THz signal generation, modulation, and radiation methods are converging, and the corresponding channel model, noise, and hardware-impairment notions are emerging. Such progress paves the way for well-grounded research into THz-specific signal processing techniques for wireless communications. This tutorial overviews these techniques with an emphasis on ultra-massive multiple-input multiple-output (UM-MIMO) systems and reconfigurable intelligent surfaces, which are vital to overcoming the distance problem at very high frequencies. We focus on the classical problems of waveform design and modulation, beamforming and precoding, index modulation, channel estimation, channel coding, and data detection. We also motivate signal processing techniques for THz sensing and localization.

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