Free Space Optic and mmWave Communications: Technologies, Challenges and Applications
| Autor: | Tawfik Ismail, Thomas Plank, Erich Leitgeb |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Flexibility (engineering)
Computer Networks and Communications business.industry Computer science 020206 networking & telecommunications 02 engineering and technology Transmission system Noise (electronics) Diversity combining 020210 optoelectronics & photonics Transmission (telecommunications) Modulation Gigabit Extremely high frequency 0202 electrical engineering electronic engineering information engineering Electronic engineering Electrical and Electronic Engineering business Software Computer network |
| Zdroj: | IEICE Transactions on Communications. :1243-1254 |
| ISSN: | 1745-1345 0916-8516 |
| DOI: | 10.1587/transcom.2015eui0002 |
| Popis: | SUMMARY Increasing demand in data-traffic has been addressed over the last few years. It is expected that the data-traffic will present the significant part of the total backbone traffic. Accordingly, much more transmission systems will be required to support this growth. A free space optic (FSO) communication is the greatest promising technology supporting high-speed and high-capacity transport networks. It can support multi Gbit/ s for few kilometers transmission distance. The benefits of an FSO system are widespread, low cost, flexibility, immunity to electromagnetic field, fast deployment, security, etc. However, it suffers from some drawbacks, which limit the deployment of FSO links. The main drawback in FSO is the degradation in the signal quality because of atmospheric channel impairments. In addition, it is high sensitive for illumination noise coming from external sources such as sun and lighting systems. It is more benefit that FSO and mmWave are operating as a complementary solution that is known as hybrid FSO/ mmWave links. Whereas the mmWave is susceptible to heavy rain conditions and oxygen absorption, while fog has no particular effect. This paper will help to better understand the FSO and mmWave technologies and applications operating under various atmospheric conditions. Furthermore, in order to improve the system performance and availability, several modulation schemes will be discussed. In |
| Databáze: | OpenAIRE |
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