Real-time 15GBaud QPSK and 16QAM Flexible Coherent Optical Receiver Implemented on a Single FPGA Chip with Low Complexity DSP
- Resource Type
- Conference
- Authors
- Sun, Jiawen; Song, Jingwei; Li, Yan; Qiu, Jifang; Zuo, Yong; Li, Wei; Hong, Xiaobin; Guo, Hongxiang; Wu, Jian
- Source
- 2023 4th Information Communication Technologies Conference (ICTC) Information Communication Technologies Conference (ICTC), 2023 4th. :183-188 May, 2023
- Subject
- Communication, Networking and Broadcast Technologies
Integrated optics
Phase shift keying
Bit error rate
Signal processing algorithms
Digital signal processing
Real-time systems
Optical receivers
coherent optical receiver
real-time
DSP
multi-format
- Language
We demonstrate real-time flexible coherent optical receiver based on a single FPGA chip, which uses a set of digital signal processing (DSP) algorithms with low complexity to realize the processing of 15GBaud single-polarization QPSK and 16QAM signals under the control of computer. We compare its hardware resources consumption with those FPGA implementations that use the same DSP algorithm but only enable DSP for single modulation format (QPSK or 16QAM), and find that the former has no significant increase in most resources. A real-time back-to-back experiment under different received optical power (ROP) is carried out to demonstrate the bit error rate (BER) performance of the FPGA-based QPSK&16QAM receiver.