title: Channel characteristic division OFDM-PON for next generation optical access.
abstract: A novel OFDM-PON structure based on channel characteristic division is proposed to reduce the sampling and computation requirement at the ONUs. In this method, the preprocessed downstream signal propagated to the ONUs is diversely aliased on spectrum by the sub-Nyquist sampling. With the subcarriers in OFDM symbols distorted according to the channel characteristics and overlaid by sections, users can recover the expected original data sent to the specific ONU lossless. Based on this method, the receiving capability of one of the 32 ONUs in a 40-Gb/s 32-QAM channel characteristic division OFDM-PON experiment is tested. The experiment confirms that the sampling rates and FFT sizes can be reduced to 1/32 on average compared to the conventional method. This new method also supports dynamic bandwidth allocations and improves the system efficiency and security by realizing the addressing process in the physical layer.
authors: State Key Laboratory on Integrated Optoelectronics, Department of Electronic Engineering, Tsinghua University, Beijing, 100084, China.
authors: Lin
authors: L
authors: Cheng
authors: He
authors: H
authors: Wen
authors: Xiaoping
authors: X
authors: Zheng
authors: Hanyi
authors: H
authors: Zhang
authors: Bingkun
authors: B
authors: Zhou
mesh_terms: D003195:Computer Communication Networks / Q000295:instrumentation*; D003198:Computer Simulation; D004867:Equipment Design; D008962:Models, Theoretical; D055096:Optical Devices; D055095:Optics and Photonics / Q000295:instrumentation*; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*