scholarly journals Integrated Components and Solutions for High-Speed Short-Reach Data Transmission

Photonics ◽  
2021 ◽  
Vol 8 (3) ◽  
pp. 77
Author(s):  
Lin Jiang ◽  
Lianshan Yan ◽  
Anlin Yi ◽  
Yan Pan ◽  
Bo Zhang ◽  
...  
Keyword(s):  
Data Transmission ◽  
Data Center ◽  
Optical Interconnects ◽  
High Speed ◽  
Data Exchange ◽  
Data Centers ◽  
Optical Interconnect ◽  
Integration Scheme ◽  
Transmission Systems ◽  
Detection Scheme

According to different transmission distances, application scenarios of a data center mainly include intra- and inter-data center optical interconnects. The intra-data center optical interconnect is considered as a few kilometers optical interconnect between servers and racks inside a data center, which accounts for nearly 80% of data traffic of a data center. The other one, inter-data center optical interconnect, is mainly applied in tens of kilometers data transmission among different data centers. Since data exchange in data centers generally occurs between many servers and racks, and a lot of transmitter and receiver components are required, optical interconnects become highly sensitive to component costs. In this paper, we firstly review the development and applications of mainstream transmitter components (e.g., VCSEL, DML, EML, MZM, and monolithic integrated transmitter) and receiver components (e.g., single-end photodetector, Kramers-Kronig receiver, Stokes vector receiver, and monolithic integrated receiver), which have been widely applied in short-reach transmission systems. Then, two types of integrated solutions including simplified detection scheme and transceiver integration scheme are presented in detail. Finally, we summarize and discuss the technological and component options for different transmission distances. We believe that monolithic integrated components, especially transceiver integration, will become a powerful solution for next-generation high-speed short-reach transmission systems.

High-Speed Semiconductor Vertical-Cavity Surface-Emitting Lasers for Optical Data-Transmission Systems (Review)

2018 ◽  
Vol 44 (1) ◽  
pp. 1-16 ◽  
Author(s):  
S. A. Blokhin ◽  
N. A. Maleev ◽  
M. A. Bobrov ◽  
A. G. Kuzmenkov ◽  
A. V. Sakharov ◽  
...  
Keyword(s):  
Data Transmission ◽  
High Speed ◽  
Optical Data ◽  
Cavity Surface ◽  
Transmission Systems ◽  
Surface Emitting Lasers ◽  
Vertical Cavity Surface ◽  
Emitting Lasers ◽  
Vertical Cavity

Reduced Complexity Optimum Detector for Block Data Transmission System Using An Lattice Sphere Detection Technique

2015 ◽  
Vol 793 ◽  
pp. 523-529
Author(s):  
Mahmoud A.M. Albreem ◽  
Azuwa binti Ali
Keyword(s):  
Data Transmission ◽  
Communication Systems ◽  
High Speed ◽  
Lattice Structure ◽  
The Other ◽  
Gram Matrix ◽  
Generator Matrix ◽  
Transmission Systems ◽  
Sphere Detection ◽  
Block Data

Block Data Transmission Systems (BDTS) are used in high speed wireless communication systems with time dispersive channel characteristics. Since Maximum Likelihood Block Detection (MLBD) requires huge amount of computation, Sphere Detection (SD) technique has been introduced as an alternative. This paper proposes an An Lattice Sphere Detection (AnLSD) technique for detection in block data transmission systems (BDTS). The An lattice structure offers more dense constellation points than the customary Zn lattice in SD technique. Thus, the proposed AnLSD uses An lattice generator matrix as the channel matrix, and uses the Gram matrix which is obtained from the generator matrix as part of the detection process. Simulation results show that the proposed AnLSD performs very close to the Exhaustive search (ES) using block size of 20 bits. It is also performing better than the other renowned methods tested under a channel with spectral nulls. The proposed AnLSD technique offers significant reduction in term of objective functions evaluation as compared to the other renowned methods.

scholarly journals Strategic Control of 60 GHz Millimeter-Wave High-Speed Wireless Links for Distributed Virtual Reality Platforms

2017 ◽  
Vol 2017 ◽  
pp. 1-10 ◽  
Author(s):  
Joongheon Kim ◽  
Jae-Jin Lee ◽  
Woojoo Lee
Keyword(s):  
Virtual Reality ◽  
Power Allocation ◽  
Millimeter Wave ◽  
Data Transmission ◽  
Data Center ◽  
High Speed ◽  
Average Energy ◽  
Wireless Transmission ◽  
60 Ghz ◽  
Strategic Control

This paper discusses the stochastic and strategic control of 60 GHz millimeter-wave (mmWave) wireless transmission for distributed and mobile virtual reality (VR) applications. In VR scenarios, establishing wireless connection between VR data-center (called VR server (VRS)) and head-mounted VR device (called VRD) allows various mobile services. Consequently, utilizing wireless technologies is obviously beneficial in VR applications. In order to transmit massive VR data, the 60 GHz mmWave wireless technology is considered in this research. However, transmitting the maximum amount of data introduces maximum power consumption in transceivers. Therefore, this paper proposes a dynamic/adaptive algorithm that can control the power allocation in the 60 GHz mmWave transceivers. The proposed algorithm dynamically controls the power allocation in order to achieve time-average energy-efficiency for VR data transmission over 60 GHz mmWave channels while preserving queue stabilization. The simulation results show that the proposed algorithm presents desired performance.

scholarly journals SPREAD SPECTRUM TECHNOLOGY RESEARCH AND ITS APPLICATION IN POWER LINE COMMUNICATION SYSTEMS

T-Comm ◽  
2020 ◽  
Vol 14 (10) ◽  
pp. 45-52
Author(s):  
Edgar M. Dmitriyev ◽  
◽  
Eugeny V. Rogozhnikov ◽  
Andrey K. Movchan ◽  
Semyon M. Mukhamadiev ◽  
...  
Keyword(s):  
Data Transmission ◽  
Spread Spectrum ◽  
Communication Systems ◽  
High Speed ◽  
Transmission Rate ◽  
Power Lines ◽  
Transmission Systems ◽  
Data Transmission Rate ◽  
High Data ◽  
Speed Data Transmission

In the presented article, the results of the research of the spreading spectrum technology are given and its use in communication systems based on the data transmission over power lines is considered. One of the currently existing problems of data transmission systems over power lines is the absence of a compromise solution in ensuring the required data transmission rate and communication range. Ready-made solutions existing on the market provide either high data transmission rates over short distances or a communication long-range with rates not exceeding several tens of kilobits per second. The purpose of the article is to research the application of spread spectrum technology in data transmission systems over power lines. In the course of the experiment, it was found that the joint use of OFDM technology and the spread spectrum technology makes it possible to form a solution that provides communication over power lines over a distance of tens of meters with a data transmission rate of at least 5 Mbps. This article compares the TP-Link 500 Mbps modem for broadband high-speed data transmission, and the NWEPLC-1-G3M modem for narrowband low-speed data transmission. The results of modeling a communication system with different lengths and types of spreading sequences for BPSK and QPSK modulations are presented. An assessment of the interference protection was carried out. The results of an experimental research of the spectrum spreading technology on a model of a data transmission system over power lines in terms of range and transmission rate in comparison with existing devices on the market are presented. The results obtained can be used in the design of communication systems over power lines.

Thinking through silicon: Cables and servers as epistemic infrastructures

2020 ◽  
pp. 146144482097719
Author(s):  
Luke Munn
Keyword(s):  
Knowledge Production ◽  
Data Center ◽  
High Speed ◽  
Data Centers ◽  
Community Center ◽  
Use Case ◽  
Social Forms ◽  
Information Infrastructures ◽  
Industrial Estate ◽  
Undersea Cables

Data centers and undersea cables allow information to be transmitted, stored, and processed. Yet, more than passively housing knowledge, information infrastructures actively shape knowledge. Infrastructures facilitate a certain use case, privileging some forms of knowledge while ignoring others. And infrastructures are material investments by states or corporations at a particular site, solidifying their knowledge-production, while marginalizing alternatives. These conditions are exemplified by two sites in Tseung Kwan O, Hong Kong. The TKO Express is a private undersea cable that offers its clients high-speed connectivity between financial centers, supporting the “fast knowledge” of finance and trading, while ignoring slower or more social forms of intelligence. The TKOIE industrial estate allocated land to a data center rather than a community center, prioritizing the production of corporate, proprietary knowledge over local and communal knowledge. The article reworks the concept of epistemic infrastructures to stress how such facilities influence what can be known and what remains unknown.

Sign in / Sign up

Export Citation Format

Share Document