Publication detail

Transmission Properties of Free-Space Optical Links

KOLKA, Z. KVÍČALA, R. BIOLKOVÁ, V.

Original Title

Transmission Properties of Free-Space Optical Links

English Title

Transmission Properties of Free-Space Optical Links

Type

conference paper

Language

en

Original Abstract

The proposed paper deals with characterization of bit-error rate of free-space optical (FSO) links. The majority of commercially available links uses simple on-off keying for data transmission and is based on components developed for fiber applications. But the atmospheric optical channel differs significantly from optical fiber. Received optical power fluctuates due to atmospheric turbulences. The "period" of fluctuations is in the order of milliseconds. The fluctuations cause short-term interruptions of data stream that interfere with communication protocols. For example, the interruptions decrease the congestion window of the TCP protocol. The actual data throughput is then a fraction of physical capacity of the link. A proper characterization of the channel is a key factor for the development of new communication protocols compatible with FSO.

English abstract

The proposed paper deals with characterization of bit-error rate of free-space optical (FSO) links. The majority of commercially available links uses simple on-off keying for data transmission and is based on components developed for fiber applications. But the atmospheric optical channel differs significantly from optical fiber. Received optical power fluctuates due to atmospheric turbulences. The "period" of fluctuations is in the order of milliseconds. The fluctuations cause short-term interruptions of data stream that interfere with communication protocols. For example, the interruptions decrease the congestion window of the TCP protocol. The actual data throughput is then a fraction of physical capacity of the link. A proper characterization of the channel is a key factor for the development of new communication protocols compatible with FSO.

Keywords

Free Space Optics, Digital links, BER testing

RIV year

2007

Released

03.10.2007

Publisher

AFCEA

Location

Tatranské Zruby, Slovakia

ISBN

978-80-8040-325-6

Book

Proceedings of the 4th Scientific Conference with International Participation Communications and Information Information Technologies KIT 2007

Pages from

64

Pages to

68

Pages count

5

BibTex


@inproceedings{BUT23235,
  author="Zdeněk {Kolka} and Radek {Kvíčala} and Viera {Biolková}",
  title="Transmission Properties of Free-Space Optical Links",
  annote="The proposed paper deals with characterization of bit-error rate of free-space optical (FSO) links. The majority of commercially available links uses simple on-off keying for data transmission and is based on components developed for fiber applications. But the atmospheric optical channel differs significantly from optical fiber. Received optical power fluctuates due to atmospheric turbulences. The "period" of fluctuations is in the order of milliseconds. The fluctuations cause short-term interruptions of data stream that interfere with communication protocols. For example, the interruptions decrease the congestion window of the TCP protocol. The actual data throughput is then a fraction of physical capacity of the link. A proper characterization of the channel is a key factor for the development of new communication protocols compatible with FSO.",
  address="AFCEA",
  booktitle="Proceedings of the 4th Scientific Conference with International Participation Communications and Information Information Technologies KIT 2007",
  chapter="23235",
  institution="AFCEA",
  year="2007",
  month="october",
  pages="64",
  publisher="AFCEA",
  type="conference paper"
}