Development Of Clock&Control Module For The TDD-RoF Applications

With the increasing popularity of high-definition video, interactive games, webconferencing and other applications, the capacity and bandwidth requirements ofcommunication system continue to improve, so many new technologies have been adoptedinto the network architecture such as OFDM (Orthogonal Frequency Division Multiplexing),MIMO (Multiple-Input Multiple-Out-put), RoF (Radio over Fiber) and the other. Theuse of a distributed community network architectures featuring MIMO technology cansignificantly improve the spectral efficiency of wireless communication systems, channelcapacity and energy efficiency. RoF is an effective program and one of the key technologiesto realize distributed community networks, therefore, research of new networkingtechnologies such as RoF have become a hot point.This thesis focus on developing RoF the clock and control signals transmission modulebased on in the TDD-LTE system. In the TDD system, the transceiver using the samefrequency, switching by time slot. It’s very important to realize that transmit correct clocksignal is a key to provide an accurate clock to the system. In addition, in the entire radio link,each module or unit will cause signal delay, to get the correct signal from the effectivedemodulation, the entire link delay calculated and compensated.This thesis unfolding around the clock and control signal transmission moduledevelopment. First, the design of the clock control signal transmission module is proposedbased on the software simulation; then details the module’s hardware design, during all theprocess of high-speed hardware design signal integrity has always been considered. After thetheoretical analysis of the transmission line, reflection, crosstalk and power integrity, thetransmission line impedance matching design and segmentation of the reference layer areintroduced. Then a modular software design process is introduced. Finally, this thesis showsthe test results of the design.