[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)

キーワード：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.