scholarly journals Turbo-coded Ultra Long Haul System with Probabilistic Shaped 16QAM Modulation

2021 ◽  
Vol 2112 (1) ◽  
pp. 012027
Author(s):  
Ziqi Wang ◽  
Yuzhe Li ◽  
Yuan Gao ◽  
Xishuo Wang ◽  
Qi Zhang
Keyword(s):  
Communication Technology ◽  
Mobile Communication ◽  
High Speed ◽  
Turbo Code ◽  
Optical Fiber Communication ◽  
Modulation Scheme ◽  
Modulation Format ◽  
Transmission Distance ◽  
Bit Error Ratio ◽  
Mobile Communication Technology

Abstract With the rapid growth and development of 5G (5th Generation Mobile Communication Technology) and the incoming of 6G (6th Generation Mobile Communication Technology), the demand for high-speed and flexible communication solutions is becoming far more urgent. Within this paper, a novel code modulation scheme based on PS (probabilistic shaping) and Turbo code is proposed with its effectiveness is confirmed by the results of simulation. The results inform that in an optical fiber communication system with 56 Gb/s rate and 3000 km transmission distance, when the SNR (signal-noise ratio) is greater than 3.5 dB, the Turbo-coded PS-16QAM modulation format can achieve reliable transmission. The proposed scheme performs the best in BER (bit error ratio) and average launch power in the four cases of uniform 16QAM, PS-16QAM, Turbo-coded 16QAM with and itself. The proposed scheme is a potential solution in the future 5G communication.

Mobile Communication Technology

2017 ◽  
pp. 73-96
Keyword(s):  
Communication Networks ◽  
Communication Technology ◽  
Mobile Communication ◽  
High Speed ◽  
Telecommunication Network ◽  
High Data ◽  
Generation Network ◽  
Types Of Information ◽  
Voice Data ◽  
Mobile Communication Technology

Since their birth in the early seventeenth and all along their different generations, mobile communication networks have crossed important evolutionary phases aiming to define increasingly sophisticated technologies allowing the provision of seamless global roaming, quality of service, and high data rates. Today, numerous technologies are co-existing to provide a unifying set of services. Improvements in telecommunication network infrastructures, evolution of digital technologies and standardization have together made it viable to use existing data networks for multimedia applications. This clearly reverses the trend of the past where networks were dedicated to a specific application. Integration of all types of information voice, data, video and image into a single network infrastructure is known as network convergence. The end result of this convergence is commonly referred to as the next-generation network (NGN), which, conceptually anyway, combines high-speed with the best features of each network. This chapter gives the details about the details of mobile communication technology.

scholarly journals Coded Modulation and Impairment Compensation Techniques in Optical Fiber Communication

2021 ◽  
Author(s):  
Zhipei Li ◽  
Dong Guo ◽  
Ran Gao
Keyword(s):  
Optical Fiber ◽  
Communication Systems ◽  
High Speed ◽  
Transmission Rate ◽  
Optical Fiber Communication ◽  
Coded Modulation ◽  
Coherent Detection ◽  
Modulation Scheme ◽  
Fiber Communication ◽  
Modulation Format

This chapter deals with coded modulation and impairment compensation techniques in optical fiber communication. Probabilistic shaping is a new coded modulation technology, which can reduce transmission power by precoding, reduce bit error rate and improve communication rate. We proposed a probabilistic shaping 16QAM modulation scheme based on trellis coded modulation. Experimental results show that this scheme can achieve better optical SNR gain and BER performance. On the other hand, in order to meet the demand of transmission rate of next generation high speed optical communication systems, multi-dimensional modulation and coherent detection are sufficiently applied. The imperfect characteristics of optoelectronic devices and fiber link bring serious impairments to the high baud-rate and high order modulation format signal, causes of performance impairment are analyzed, pre-compensation and receiver side’s DSP techniques designed for coherent systems are introduced.

scholarly journals New Retail Marketing Strategy Combining Virtual Reality and 5G Mobile Communication

2021 ◽  
Vol 2021 ◽  
pp. 1-14
Author(s):  
Xing Zhang
Keyword(s):  
Communication Technology ◽  
Mobile Communication ◽  
High Speed ◽  
Body Shape ◽  
Retail Industry ◽  
Consumer Experience ◽  
Body Type ◽  
Virtual Technology ◽  
5G Mobile Communication ◽  
Mobile Communication Technology

At present, Chinaʼs retail industry has been completely opened to the outside world, and it is exactly the same. The retail industry has become one of Chinaʼs most market-oriented and competitive industries. At the same time, the changes in consumer demand are becoming more and more diversified. In order to meet the diversified and personalized needs of consumers, retail companies must continue to increase investment in services, management, marketing, and branding. This paper combines virtual technology and 5G mobile communication technology to design and realize a set of 3D virtual fitting system. According to peopleʼs fitting needs, the research is carried out from two aspects: clothing style and body type matching degree and clothing fabric drape. In the comparison of body shape test results with conventional body shape judgment experience, the correct rate of the virtual fitting systemʼs body shape judgment was 86%, and the error rate was 14%. In the comparison of online shopping data of consumers on different communication networks, it was found that the speed of different networks is different. The shopping experience has a relatively large impact. As a newly developed network mobile communication technology, 5Gʼs ultra-high speed advantage has a great impact on the consumer experience; in the analysis and comparison of the traditional operation mode and the combination of online and offline operation modes, it is concluded that the traditional marketing model is far from meeting peopleʼs current life needs, and new retail is catering to the consumer needs of people in the new era.

40 Gb/s High-speed mode-division multiplexing transmission employing NRZ modulation format

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Rabiu Imam Sabitu ◽  
Nafizah Goriman Khan ◽  
Amin Malekmohammadi
Keyword(s):  
System Performance ◽  
High Speed ◽  
Direct Detection ◽  
Signal To Noise Ratio ◽  
Optical Signal ◽  
Threshold Power ◽  
Modulation Format ◽  
Transmission Distance ◽  
Mode Division Multiplexing ◽  
Speed Mode

AbstractThis report examines the performance of a high-speed MDM transmission system supporting four nondegenerate spatial modes at 10 Gb/s. The analysis adopts the NRZ modulation format to evaluate the system performance in terms of a minimum power required (PN) and the nonlinear threshold power (PTH) at a BER of 10−9. The receiver sensitivity, optical signal-to-noise ratio, and the maximum transmission distance were investigated using the direct detection by employing a multimode erbium-doped amplifier (MM-EDFA). It was found that by properly optimizing the MM-EDFA, the system performance can significantly be improved.

Personalized Resources Recommendation System Design for Teachers Training

2014 ◽  
Vol 644-650 ◽  
pp. 5765-5768
Author(s):  
Dan Dan Wei ◽  
Le Xing Qiu
Keyword(s):  
System Design ◽  
Communication Technology ◽  
Computer Technology ◽  
Mobile Communication ◽  
System Architecture ◽  
Recommendation System ◽  
Network Technology ◽  
Safeguard Mechanism ◽  
Mobile Communication Technology ◽  
Teachers Training

With the integration of computer technology, network technology and mobile communication technology continuously, the formation of personalized resource recommendation has become possible. Based on teachers' demand investigation and analysis, this paper analyzes the teacher system architecture, personalized resource recommendation and service safeguard mechanism.

scholarly journals Research on the convergence architecture of 5G and industrial communication

2021 ◽  
Vol 336 ◽  
pp. 04013
Author(s):  
Zhen Wang ◽  
Dantao Han ◽  
Yanjie Gong ◽  
Yanling Zhao
Keyword(s):  
Communication Technology ◽  
Future Development ◽  
Mobile Communication ◽  
Industrie 4.0 ◽  
Low Latency ◽  
Network Configuration ◽  
Access Technology ◽  
Machine Type ◽  
Machine Type Communication ◽  
Mobile Communication Technology

As the next generation of mobile communication technology, 5G has the characteristics of enhanced mobile broadband (eMBB), massive machine-type communication (mMTC), and ultra-reliable low latency communication (URLLC), which are critical technologies for the future development of industrie 4.0. So far, these technologies have been explored and applied in industry, however, there is still a lack of general architectures. This paper presents a 5G and industrial communication convergence architecture and elaborates on the implementation methods from the aspects of device access technology and network configuration strategies, and discusses the transparent transmission and mapping methods adopted by 5G terminal access technology as well.

Sign in / Sign up

Export Citation Format

Share Document