Investigation and Suppression of Fiber Nonlinearities Using Injection-Locking in OFDM-WDM System

The fiber nonlinearities play a major role in optical communication with respect to the system performance and transmission capacity. Here, fiber nonlinear impairments are investigated through consideration of several parameters of optical fiber system, such as fiber length and core effective area. We also demonstrate the mitigation of fiber nonlinearities by using single-stage injection-locking in 3 × 10 Gb/s OFDM-WDM system. This paper focuses on selection of appropriate bias current for slave laser to suppress the four wave mixing (FWM) crosstalk effects. These findings resemble the importance of single-stage injection-locking for FWM suppression for high-speed data communication.

Download Full-text

Study of BLAST Signal Detection Algorithm in LTE System

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.756-759.3183 ◽

2013 ◽

Vol 756-759 ◽

pp. 3183-3188

Author(s):

Tao Lei ◽

Deng Ping He ◽

Fang Tang Chen

Keyword(s):

Signal Detection ◽

High Speed ◽

Data Communication ◽

Detection Algorithm ◽

Detection Performance ◽

Detection Algorithms ◽

High Speed Data ◽

Simulation Results ◽

Better Than

BLAST can achieve high speed data communication. Its signal detection directly affects performance of BLAST receiver. This paper introduced several signal detection algorithmsZF algorithm, MMSE algorithm, ZF-SIC algorithm and MMSE-SIC algorithm. The simulation results show that the traditional ZF algorithm has the worst performance, the traditional MMSE algorithm and the ZF-SIC algorithm is similar, but with the increase of the SNR, the performance of ZF-SIC algorithm is better than MMSE algorithm. MMSE-SIC algorithm has the best detection performance in these detection algorithms.

Download Full-text

SpaceWire

Electromagnetic Compatibility for Space Systems Design - Advances in Computer and Electrical Engineering ◽

10.4018/978-1-5225-5415-8.ch002 ◽

2018 ◽

pp. 38-70

Author(s):

Anargyros T. Baklezos ◽

Christos N. Capsalis

Keyword(s):

System Performance ◽

High Speed ◽

Data Communication ◽

Space Missions ◽

Development Cost ◽

Communication Links ◽

Recent Developments ◽

High Speed Data ◽

Electromagnetic Behavior ◽

Point To Point

SpaceWire is a point-to-point bit shipping protocol for high-speed data communication links and networks providing equipment compatibility and seamless component reusability. It has found great application in many space missions reducing the development cost, offering architectural flexibility and improving reliability. This chapter delves into the standard describing the SpaceWire, focusing on the lower levels that play a key role in the electromagnetic behavior of the system and concern cable assemblies, shielding, bonding, and grounding. Findings regarding emissions affecting spacecraft components are presented as well as other EMC issues that have an impact on the system performance. Recent developments and upcoming updates to the standard are also presented and discussed.

Download Full-text

Broadband Communications for Aircraft in Oceanic and Other Remote Areas

International Journal of Aviation Systems Operations and Training ◽

10.4018/ijasot.2014010106 ◽

2014 ◽

Vol 1 (1) ◽

pp. 51-59

Author(s):

Stephen John Curran

Keyword(s):

Video Streaming ◽

High Speed ◽

Data Communication ◽

Data Service ◽

Fibre Optic ◽

Technical Challenge ◽

Data Services ◽

Remote Areas ◽

Broadband Communications ◽

High Speed Data

Data communication with aircraft presents unique technical challenges and these challenges are more pronounced when the aircraft are travelling over oceanic or other remote areas. When in populated areas, systems are available that can support high speed data services, one Gigabit per second (Gbps) and beyond via, terrestrial ground stations. However no such systems exist to provide airborne communications with high bandwidths among aircraft and between aircraft and the ground in more remote regions. Passengers will expect data service on the aircraft similar to what they typically experience on the ground. Multimedia activities, such as video streaming, are very bandwidth intensive and the provision of these services presents a serious technical challenge. On the ground, fibre optic cables are the method of choice for the provision of high speed data service, and in contrast, an airborne high speed data communications solution will need to be a wireless one.

Download Full-text