Title :
Evaluation of effects of MZM nonlinearity on QAM and OFDM signals in RoF transmitter
Author :
Yang, H. ; Zeng, J. ; Zheng, Y. ; Jung, H.-D. ; Huiszoon, B. ; van Zantvoort, J.H.C. ; Tangdiongga, E. ; Koonen, A.M.J.
Author_Institution :
COBRA Res. Inst., Eindhoven Univ. of Technol., Eindhoven
fDate :
Sept. 9 2008-Oct. 3 2008
Abstract :
We present, both numerically and experimentally, the nonlinearity effect of the intensity modulator in RoF transmitters through the comparison between single-carrier QAM and multi-carrier OFDM signals. The acceptable RF power level of the multi-carrier OFDM signal is 2 dB less compared with the single-carrier signal for the same EVM penalty of 1%, indicating the degradation due to inter-modulation products caused by the modulator nonlinearity for OFDM RoF systems.
Keywords :
OFDM modulation; optical fibre networks; optical modulation; optical transmitters; quadrature amplitude modulation; radio-over-fibre; Mach-Zehnder modulator nonlinearity; RoF transmitter; multi-carrier OFDM signals; radio-over-fiber system; single-carrier QAM signals; Degradation; Frequency modulation; Intensity modulation; OFDM modulation; Optical modulation; Optical signal processing; Optical transmitters; Quadrature amplitude modulation; RF signals; Radio frequency;
Conference_Titel :
Microwave photonics, 2008. jointly held with the 2008 asia-pacific microwave photonics conference. mwp/apmp 2008. international topical meeting on
Conference_Location :
Gold Coast, Qld
Print_ISBN :
978-1-4244-2168-8
Electronic_ISBN :
978-1-4244-2169-5
DOI :
10.1109/MWP.2008.4666642
