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Performance of LDPC‐coded optical on‐off keying communication systems
Author(s) -
Tseng ShuMing,
Hsieh ChihHung,
Wang YungChung,
Tsai FuHsiang,
Lin KuenCherng
Publication year - 2007
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.22320
Subject(s) - low density parity check code , keying , serial concatenated convolutional codes , computer science , turbo code , convolutional code , electronic engineering , algorithm , additive white gaussian noise , decoding methods , modulation (music) , optical communication , concatenated error correction code , phase shift keying , telecommunications , channel (broadcasting) , block code , bit error rate , physics , engineering , acoustics
In this letter, we study the performance of low‐density parity‐check (LDPC) codes in a Poisson optical channel with on–off keying modulation. We modify the iterative decoding algorithm used in binary phase‐shift keying modulation and additive white Gaussian noise channels. The simulation results show that the LDPC codes has performance improvements over parallel concatenated convolutional codes. Therefore, LDPC codes is well suited for optical channels with signal energy constraints. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 976–979, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22320