Exhaustive gaussian approach for performance evaluation of direct-detection OFDM systems employing square and cross QAM

Author

Cruz, Pedro E. D. ; Rosario, Joao P. F. ; Alves, Tiago M. F. ; Cartaxo, Adolfo V. T.

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. de Lisboa, Lisbon, Portugal

fYear

2014

fDate

17-20 Aug. 2014

Firstpage

1

Lastpage

4

Abstract

An exhaustive Gaussian approach (EGA) is proposed to evaluate, through numerical simulation, the bit error ratio (BER) of direct-detection orthogonal frequency-division multiplexing systems employing square and cross quadrature amplitude modulation. Excellent agreement between the BER estimates from the direct error counting (DEC) and the EGA is shown for different levels of optical signal-to-noise ratio and signal distortion. It is shown that the EGA requires about three orders of magnitude less in computation time than the DEC method for BER levels around 10^-6, with the difference getting higher for lower BER levels.

Keywords

Gaussian processes; OFDM modulation; distortion; error statistics; optical communication; performance evaluation; quadrature amplitude modulation; BER estimation; EGA evaluation; bit error ratio; cross QAM; cross quadrature amplitude modulation; direct-detection OFDM systems; direct-detection orthogonal frequency-division multiplexing systems; exhaustive gaussian approach; optical signal-to-noise ratio; performance evaluation; signal distortion; Bit error rate; OFDM; Optical attenuators; Optical distortion; Optical noise; Quadrature amplitude modulation; Signal to noise ratio; Bit error ratio; direct-detection; optical communications; orthogonal frequency-division multiplexing; performance evaluation;

fLanguage

English

Publisher

ieee

Conference_Titel

Telecommunications Symposium (ITS), 2014 International

Conference_Location

Sao Paulo

Type

conf

DOI

10.1109/ITS.2014.6947998

Filename

6947998