Title :
Bit-error-rate performance of lightwave hybrid AM/OFDM systems with comparison with AM/QAM systems in the presence of clipping impulse noise
Author :
Pan, Qi ; Green, Roger J.
Author_Institution :
Dept. of Electr. & Electron. Eng., Bradford Univ., UK
Abstract :
Theoretical analysis is presented for the BER performance of hybrid AM/OFDM systems in the presence of clipping impulse and Gaussian noise. In particular, the OFDM BER has been compared with that of conventional QAM. It is found that, due to the dilution effect of the subchannels, the impact of the clipping impulse noise on BER for OFDM systems is virtually zero for reasonably large laser modulation depths. Therefore, OFDM is more suitable to the lightwave transmission of digital video.
Keywords :
Gaussian noise; amplitude modulation; frequency division multiplexing; optical fibre subscriber loops; optical modulation; optical noise; quadrature amplitude modulation; television networks; video signals; AM/QAM systems; BER performance; Gaussian noise; OFDM BER; bit-error-rate performance; clipping impulse noise; conventional QAM; digital video; dilution effect; hybrid AM/OFDM systems; laser modulation depths; lightwave hybrid AM/OFDM systems; lightwave transmission; subchannels; theoretical analysis; Bit error rate; Degradation; Diode lasers; Gaussian noise; Laser noise; Matched filters; OFDM modulation; Performance analysis; Quadrature amplitude modulation; Working environment noise;
Journal_Title :
Photonics Technology Letters, IEEE
