[3] Yoon H,Park K.Development of a Laser Range Finder Using a Phase Difference Method［C］//Optomechatronic Sensors and Instrumentation. Sapporo, Japan: International Society for Optics and Photonics, 2005, 6049:60490R.
[7] Wang J,Yu Z,Ying K,et al.Digital Mobile Fronthaul based on Delta–Sigma Modulation for 32 LTE Carrier Aggregation and FBMC Signals［J］. Journal of Optical Communications and Networking, 2017, 9(2):A233-A244.
[8] Schreier R, Temes G C. Understanding Delta-Sigma Data CAonverters［M］. Piscataway, NJ: IEEE Press, 2005.
[9] Aziz P M, Sorensen H V, Vn der Spiegel J. An Overview of Sigma-Delta Converters［J］. IEEE Signal Processing Magazine, 1996, 13(1):61-84.
[10] Chen Z, Wu Z, Huang J, et al. 32 Gbps DAC-free Block-wise QPSK 1 200 km SSMF Single-PD Direct Detection Transmission based on Delta-Sigma Modulation for Virtual Carrier Generation［C］//Asia Communications and Photonics Conference. Chengdu, China: Optical Society of America, 2019: M4C. 5.
