Impact of Link Parameters and Channel Correlation on the Performance of FSO Systems with Differential Signalling Technique

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F17%3A00305232" target="_blank" >RIV/68407700:21230/17:00305232 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1364/JOCN.9.000138" target="_blank" >http://dx.doi.org/10.1364/JOCN.9.000138</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1364/JOCN.9.000138" target="_blank" >10.1364/JOCN.9.000138</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Impact of Link Parameters and Channel Correlation on the Performance of FSO Systems with Differential Signalling Technique

Popis výsledku v původním jazyce

We investigate the effects of link parameters and the channel correlation coefficient (CC) on the detection threshold, Q-factor, and bit-error-rate (BER) of a free space optical system employing the differential signalling (DS) scheme. In systems employing DS scheme, the mean value of the signal is used as the detection threshold level, provided that differential links are identical or highly correlated. However, in reality the underlying links are not essentially identical and have a low level of correlation. To show the significance of the link parameters as well as CC, we derive analytical relations describing the effect of weak turbulence and we determine the improvement of Q-factor with the channel correlation. Further, for the same signal-to-noise ratio, we demonstrate that a link with a higher extinction ratio offers an improved performance. We also propose a closed-form expression of the system BER. We present experimental results showing improved Q-factor for the correlated channel case, compared to the uncorrelated channel.

Název v anglickém jazyce

Impact of Link Parameters and Channel Correlation on the Performance of FSO Systems with Differential Signalling Technique

Popis výsledku anglicky

We investigate the effects of link parameters and the channel correlation coefficient (CC) on the detection threshold, Q-factor, and bit-error-rate (BER) of a free space optical system employing the differential signalling (DS) scheme. In systems employing DS scheme, the mean value of the signal is used as the detection threshold level, provided that differential links are identical or highly correlated. However, in reality the underlying links are not essentially identical and have a low level of correlation. To show the significance of the link parameters as well as CC, we derive analytical relations describing the effect of weak turbulence and we determine the improvement of Q-factor with the channel correlation. Further, for the same signal-to-noise ratio, we demonstrate that a link with a higher extinction ratio offers an improved performance. We also propose a closed-form expression of the system BER. We present experimental results showing improved Q-factor for the correlated channel case, compared to the uncorrelated channel.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Optical Communications and Networking

ISSN

1943-0620

e-ISSN

1943-0639

Svazek periodika

9

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

138-148

Kód UT WoS článku

000395889500002

EID výsledku v databázi Scopus

2-s2.0-85013393567