Please use this identifier to cite or link to this item: http://dlib.scu.ac.ir/handle/Hannan/147909
Title: Multiplier-Free Carrier Phase Estimation for Optical Coherent Systems
Authors: Jilong Han;Wei Li;Zhixue He;Qianggao Hu;Shaohua Yu
subject: power operation|carrier phase estimation|Coherent optical communication|absolute operation
Year: 2016
Publisher: IEEE
Abstract: A multiplier-free carrier phase estimation (CPE) algorithm is investigated in this letter. The Viterbi and Viterbi (V&V) algorithm is widely used in CPE, because the V&V algorithm is less complex than many other feed-forward CPE algorithms, including the blind phase search algorithm. In the V&V algorithm, an M th power operation is used to remove the modulated data phase. However, one disadvantage of the $M$ th power operation is its large computational complexity. In this letter, we extend our prior simplified M th power method from frequency offset estimation to CPE and propose an improved V&V algorithm, adopting the absolute operation as an approximation and making the V&V algorithm a multiplier-free CPE algorithm. Using simulations, the improved V&V algorithm is compared with the traditional V&V algorithm in the 32-GBd quadrature phase-shift keying, 8PSK, star-8QAM, and square-16QAM systems for CPE. The results show that the improved V&V algorithm outperforms the traditional V&V algorithm. In addition, the complexity is reduced effectively and no multiplier is required.
URI: http://localhost/handle/Hannan/147909
ISSN: 1041-1135
1941-0174
volume: 28
issue: 20
More Information: 2168
2171
Appears in Collections:2016

Files in This Item:
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Title: Multiplier-Free Carrier Phase Estimation for Optical Coherent Systems
Authors: Jilong Han;Wei Li;Zhixue He;Qianggao Hu;Shaohua Yu
subject: power operation|carrier phase estimation|Coherent optical communication|absolute operation
Year: 2016
Publisher: IEEE
Abstract: A multiplier-free carrier phase estimation (CPE) algorithm is investigated in this letter. The Viterbi and Viterbi (V&V) algorithm is widely used in CPE, because the V&V algorithm is less complex than many other feed-forward CPE algorithms, including the blind phase search algorithm. In the V&V algorithm, an M th power operation is used to remove the modulated data phase. However, one disadvantage of the $M$ th power operation is its large computational complexity. In this letter, we extend our prior simplified M th power method from frequency offset estimation to CPE and propose an improved V&V algorithm, adopting the absolute operation as an approximation and making the V&V algorithm a multiplier-free CPE algorithm. Using simulations, the improved V&V algorithm is compared with the traditional V&V algorithm in the 32-GBd quadrature phase-shift keying, 8PSK, star-8QAM, and square-16QAM systems for CPE. The results show that the improved V&V algorithm outperforms the traditional V&V algorithm. In addition, the complexity is reduced effectively and no multiplier is required.
URI: http://localhost/handle/Hannan/147909
ISSN: 1041-1135
1941-0174
volume: 28
issue: 20
More Information: 2168
2171
Appears in Collections:2016

Files in This Item:
File Description SizeFormat 
7501841.pdf1.29 MBAdobe PDFThumbnail
Preview File
Title: Multiplier-Free Carrier Phase Estimation for Optical Coherent Systems
Authors: Jilong Han;Wei Li;Zhixue He;Qianggao Hu;Shaohua Yu
subject: power operation|carrier phase estimation|Coherent optical communication|absolute operation
Year: 2016
Publisher: IEEE
Abstract: A multiplier-free carrier phase estimation (CPE) algorithm is investigated in this letter. The Viterbi and Viterbi (V&V) algorithm is widely used in CPE, because the V&V algorithm is less complex than many other feed-forward CPE algorithms, including the blind phase search algorithm. In the V&V algorithm, an M th power operation is used to remove the modulated data phase. However, one disadvantage of the $M$ th power operation is its large computational complexity. In this letter, we extend our prior simplified M th power method from frequency offset estimation to CPE and propose an improved V&V algorithm, adopting the absolute operation as an approximation and making the V&V algorithm a multiplier-free CPE algorithm. Using simulations, the improved V&V algorithm is compared with the traditional V&V algorithm in the 32-GBd quadrature phase-shift keying, 8PSK, star-8QAM, and square-16QAM systems for CPE. The results show that the improved V&V algorithm outperforms the traditional V&V algorithm. In addition, the complexity is reduced effectively and no multiplier is required.
URI: http://localhost/handle/Hannan/147909
ISSN: 1041-1135
1941-0174
volume: 28
issue: 20
More Information: 2168
2171
Appears in Collections:2016

Files in This Item:
File Description SizeFormat 
7501841.pdf1.29 MBAdobe PDFThumbnail
Preview File