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ISSN: 1023-5086


ISSN: 1023-5086

Scientific and technical

Opticheskii Zhurnal

A full-text English translation of the journal is published by Optica Publishing Group under the title “Journal of Optical Technology”

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DOI: 10.17586/1023-5086-2021-88-06-11-25

Performance analysis of differential quadrature phase shift keying modulation schemes for radio over fiber system

For Russian citation (Opticheskii Zhurnal):

Shilpi Verma, Sanmukh Kaur Performance analysis of differential quadrature phase shift keying modulation schemes for radio over fiber system (Анализ производительности схем дифференциальной квадратурной фазовой манипуляции (DQPSK) для системы «радио по волокну») [на англ. яз.] // Оптический журнал. 2021. Т. 88. № 6. С. 11–25.


Shilpi Verma, Sanmukh Kaur Performance analysis of differential quadrature phase shift keying modulation schemes for radio over fiber system (Анализ производительности схем дифференциальной квадратурной фазовой манипуляции (DQPSK) для системы «радио по волокну») [in English] // Opticheskii Zhurnal. 2021. V. 88. № 6. P. 11–25.

For citation (Journal of Optical Technology):

Shilpi Verma and Sanmukh Kaur, "Performance analysis of differential quadrature phase shift keying modulation schemes for a radio over fiber system," Journal of Optical Technology. 88(6), 297-307 (2021).


Radio over fiber systems have become one of the best options for the backhaul due to the larger bandwidth, low propagation loss and competitive cost. Advanced modulation formats play a key role in enhancing the performance of fiber optic communication system by providing higher bit rates and less susceptibility to noise in long distance transmission. This paper presents a detailed analysis of differential quadrature phase shift keying modulation in Radio over Fiber system at 60 GHz for 5G applications. The differential quadrature phase shift keying modulation is combined with two different advanced phase modulation formats i.e. return to zero and carrier suppressed return to zero to provide higher spectral efficiency. The performance of the system has been investigated at 10 and 20 Gbps data rate for 10 to 50 km transmission length of different types of fiber Overall, it has been observed that carrier suppressed return to zero–differential quadrature phase shift keying better as compared to return to zero–differential quadrature phase shift keying at both 10 and 20 Gbps data rates upto a transmission length of 50 km.


all optical networks, microwaves, modulation techniques, modulator, optical communications

OCIS codes: 060.1155, 350.4010, 170.4090, 250.4110, 060.4510


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