DocumentCode
1527293
Title
CPFSK coherent optical receivers: impact of IF bandwidth and laser phase noise
Author
Jacobsen, G. ; Kazovsky, Leonid G.
Author_Institution
Telecommun. Res. Lab., Copenhagen
Volume
24
Issue
11
fYear
1988
fDate
5/26/1988 12:00:00 AM
Firstpage
715
Lastpage
717
Abstract
A detailed theoretical model for narrowband CPFSK receivers is presented. It accounts for the influence of IF bandwidth on the signal voltage, non-Gaussian statistics of the output noise, correlation between noise samples stemming from limited IF bandwidth, and the impact of laser phase noise. It is found that the IF bandwidth needed to avoid intersymbol interference is 2.2 times the bit rate for a modulation index of 1; it is higher for other modulation index values. The bit error ratio is within 1 dB of the shot noise limit for the modulation index of 1
Keywords
digital communication systems; error statistics; frequency shift keying; intersymbol interference; optical communication equipment; random noise; receivers; BER; CPFSK coherent optical receivers; IF bandwidth; ISI; bit error ratio; continuous phase FSK; digital transmission; intersymbol interference; laser phase noise; nonGaussian statistics; output noise; signal voltage; theoretical model;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
Filename
5774
Link To Document