상세정보
학술지
Channel Estimation and Synchronization for Polarization-Division Multiplexed CO-OFDM Using Subcarrier/Polarization Interleaved Training Symbols
- 발행일
- 201108
- 출처
- Optics Express, v.19 no.17, pp.16174-16181
- ISSN
- 1094-4087
- 출판사
- Optical Society of America(OSA)
- 초록
- We propose and demonstrate the use of subcarrier/polarizationinterleaved training symbols for channel estimation and synchronization in polarization-division multiplexed (PDM) coherent optical orthogonal frequency-division multiplexed (CO-OFDM) transmission. The principle, the computational efficiency, and the frequency-offset tolerance of the proposed method are described. We show that the use of subcarrier/polarization interleaving doubles the tolerance to the frequency offset between the transmit laser and the receiver's optical local oscillator as compared to conventional schemes. Using this method, we demonstrate 43- Gb/s PDM CO-OFDM transmission with 16-QAM subcarrier modulation over 5,200-km of ultra-large-area fiber. © 2011 Optical Society of America.
- KSP 제안 키워드
- 16 quadrature amplitude modulation(16QAM), Channel estimation(CE), Coherent optical orthogonal frequency division multiplexing(CO-OFDM), Computational Efficiency, Local Oscillator, OFDM transmission, Offset tolerance(OT), Subcarrier modulation, Ultra-large, frequency offset, large area