Bandpass Sampling in digital coherent receiver with free-running local oscillator laser for phase modulated radio-over-fiber systems
- Resource Type
- Conference
- Authors
- Cao, Minghua; Li, Jianqiang; Xu, Kun; Dai, Yitang; Yin, Feifei; Lin, Jintong
- Source
- Microwave Photonics (MWP) and the 2014 9th Asia-Pacific Microwave Photonics Conference (APMP) 2014 International Topical Meeting on Microwave Photonics (MWP) and the 2014 9th Asia-Pacific Microwave Photonics Conference (APMP), 2014 International Topical Meeting on. :247-250 Oct, 2014
- Subject
- Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Fields, Waves and Electromagnetics
General Topics for Engineers
Signal Processing and Analysis
Optical receivers
Optical fiber communication
Photonics
Radio frequency
Digital signal processing
Optical fibers
Radio-over-Fiber
Bandpass Sampling
Coherent Communications
- Language
We have experimentally presented a novel radio-over-fiber (RoF) based digital receiver architecture for coherent heterodyne detection. It demonstrates the application of using bandpass sampling in a RoF communications system to overcome the high sampling rate requirement of conventional receivers and front-end hardware dependency. In particular, we modified the uniform bandpass sampling theorem to cope with frequency offset produced by independent free running optical local oscillator. Thereafter, a 40Mbit/s QPSK modulated data signal at 2.4GHz RF carrier frequency is experimentally demonstrated by using phase modulated and digital signal processing aided RoF links.