DocumentCode
75106
Title
Pilot-Aided Log-Likelihood Ratio for LDPC Coded MPSK-OFDM Transmission
Author
Shengjiao Cao ; Pooi-Yuen Kam ; Changyuan Yu
Author_Institution
Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore, Singapore, Singapore
Volume
25
Issue
6
fYear
2013
fDate
15-Mar-13
Firstpage
594
Lastpage
597
Abstract
The pilot-aided log-likelihood ratio (LLR) is derived from low-density parity-check coded coherent optical M-ary phase-shift keying orthogonal frequency division multiplexing transmission system with laser phase noise. Approximations of the metrics, which yield lower computational cost and comparable performance, are also introduced. The bit error ratio performance is tested through simulation for the proposed LLR metrics.
Keywords
OFDM modulation; error statistics; parity check codes; phase noise; phase shift keying; LDPC coded MPSK-OFDM transmission; LLR metrics; bit error ratio performance; computational cost; laser phase noise; low-density parity-check coded coherent optical M-ary phase-shift keying OFDM transmission system; metrics approximation; orthogonal frequency division multiplexing; pilot-aided log-likelihood ratio; Log-likelihood ratio (LLR); low-density parity-check (LDPC); orthogonal frequency division multiplexing (OFDM); phase noise;
fLanguage
English
Journal_Title
Photonics Technology Letters, IEEE
Publisher
ieee
ISSN
1041-1135
Type
jour
DOI
10.1109/LPT.2013.2246563
Filename
6472045
Link To Document