Experimental Demonstration of Nonlinearity and Phase Noise Tolerant 16-QAM OFDM W-Band (75–110 GHz) Signal Over Fiber System

Author

Lei Deng ; Xiaodan Pang ; Monroy, I.T. ; Ming Tang ; Ping Shum ; Deming Liu

Author_Institution

Next Generation Internet Access Nat. Eng., Huazhong Univ. of Sci. & Technol., Wuhan, China

Volume

32

Issue

8

fYear

2014

fDate

15-Apr-14

Firstpage

1442

Lastpage

1448

Abstract

We propose a nonlinearity and phase noise tolerant orthogonal frequency division multiplexing (OFDM) W-band signal over fiber system based on phase modulation and photonic heterodyne up-conversion techniques. By heterodyne mixing the phase-modulated optical OFDM signal with a free-running laser in the photodiode, the constant envelope OFDM W-band wireless signal is obtained to suppress the nonlinear impairments. Moreover, the phase noises of the beating lasers appear as additive terms to the desired signal, and could be easily filtered out without complex phase noise estimation and compensation algorithms. In our experiment, 4 Gb/s QPSK and 8 Gb/s 16-QAM constant envelope OFDM W-band signals are transmitted over 22.8 km single mode fiber and 2.3 m air distance with achieved bit-error-rate performance below the forward error correction limit.

Keywords

OFDM modulation; optical modulation; phase noise; quadrature amplitude modulation; quadrature phase shift keying; radio-over-fibre; signal denoising; 16-QAM OFDM W-band signal over fiber system; BER; QPSK; beating lasers; bit rate 4 Gbit/s; bit rate 8 Gbit/s; bit-error-rate performance; constant envelope signal; distance 2.3 m; forward error correction limit; free-running laser; frequency 75 GHz to 110 GHz; heterodyne mixing; nonlinearity system; orthogonal frequency division multiplexing; phase noise system; phase-modulated optical signal; photodiode; photonic heterodyne up-conversion techniques; OFDM; Optical fibers; Optical mixing; Optical modulation; Optical receivers; Optical transmitters; Constant envelope; constant envelope orthogonal frequency division multiplexing (CE-OFDM); digital signal processing (DSP); microwave photonics; wireless communication;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2014.2307054

Filename

6746069