[TuB2] DSP-related Techniques

[TuB2-5] Low Complexity Carrier Frequency Offset Estimation Scheme Based on Zoom-FFT for M-QAM

Bi Tang, Shaohua Hu, Guangze Ge, 〇Jing Zhang, Bo Xu, Kun Qiu (Univ. of Electronic Science and Technology of China, China)

Keywords:Transmission impairments and their mitigations, Digital signal processing techniques for optical communications

We propose a novel low complexity two-stage carrier frequency offset estimation scheme based on Zoom-FFT for M-QAM. Numerical simulations and experimental results verify its effectiveness and comparable performance to the single stage FFT and FFT+CZT.