DocumentCode
917019
Title
Block length effect on 5.0 Gbit/s real-time QPSK intradyne receivers with standard DFB laser
Author
Kaneda, N. ; Leven, A. ; Chen, Y.K.
Author_Institution
Bell Labs., Murray Hill
Volume
43
Issue
20
fYear
2007
Firstpage
1106
Lastpage
1107
Abstract
For intradyne QPSK receivers, block phase estimation based on the Viterbi and Viterbi algorithm has been reported to yield better OSNR results than differential detection. When a laser with large phase noise such as a distributed feedback laser is used, typically a higher error floor is observed with block phase estimation. With shorter block length, the bit-error rate (BER) floor for a 5.0 Gbit/s real-time intradyne receiver was improved without large sacrifice in the low BER performance.
Keywords
distributed feedback lasers; error statistics; maximum likelihood estimation; optical modulation; optical receivers; phase estimation; quadrature phase shift keying; DFB laser; OSNR; Viterbi algorithm; bit rate 5.0 Gbit/s; bit-error rate floor; block length effect; block phase estimation; differential detection; distributed feedback laser; real-time QPSK intradyne receiver;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:20072192
Filename
4338211
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