Eui Suk Jung

Implementation of an All-digital Receiver for WDM/SCM-PON Subscriber Networks

Wavelength division multiplexing/sub-carrier multiplexing-passive optical network (WDM/SCM-PON) is the most flexible and cost-effective technique to transmit multimedia signals with varied formats and speeds. In this paper we propose an all-digital receiver structure supporting up to high bit rate of 120 Mbps for a WDM/SCM-PON subscriber network. The proposed receiver is implemented on a single-chip FPGA and its performance is verified by experimental results.

Digital Carrier Recovery Loop Using both Frequency Detector and Phase Detector for MPSK Systems

We propose a digital carrier recovery loop employing both a frequency detector and a phase detector for M-ary phase shift keying (MPSK) systems. A new frequency error correction function is also derived to increase the acquisition range. It is shown through computer simulation that the proposed scheme can reduce the acquisition time at large frequency offsets, unlike the existing ones.