Abstract: Disclosed is a method of extracting a faulty section of an optical path using a super resolution algorithm. The method includes generating a MUSIC spectrum by applying a MUSIC algorithm or an improved MUSIC algorithm to a received signal. Pieces of data on the received signal are divided into predetermined unit groups, and the MUSIC algorithm or the improved MUSIC algorithm is performed only on a unit group in which a signal corresponding to a reflection event occurs, among the predetermined unit groups.

Abstract: Disclosed is a method of extracting a faulty section of an optical path using a super resolution algorithm. The method includes generating a MUSIC spectrum by applying a MUSIC algorithm or an improved MUSIC algorithm to a received signal. Pieces of data on the received signal are divided into predetermined unit groups, and the MUSIC algorithm or the improved MUSIC algorithm is performed only on a unit group in which a signal corresponding to a reflection event occurs, among the predetermined unit groups.

Abstract: An apparatus for time synchronization of a femtocell base station receives, via neighboring macrocell base stations adjacent to a femtocell base station, timing packets generated by timing servers directly connected to the neighboring macrocell base stations, and if time synchronization using a GPS satellite is impossible, obtains system time information from a timing packet received via one corresponding to a master base station, among the neighboring macrocell base stations, and performs time synchronization.

Abstract: The present invention relates to an apparatus for generating a clock signal with jitter and a test apparatus including the same. The apparatus for generating a clock signal with jitter in accordance with the present invention includes a voltage-controlled crystal oscillator (VCXO) for generating an output signal including jitter components based on a driving power source having a specific waveform and a controlled voltage, a phase comparator for calculating a phase difference of a reference signal and the output signal, and a loop filter for generating the controlled voltage based on the phase difference calculated by the phase comparator. Accordingly, the PLL circuit unit generates a clock signal including jitter, so that the complexity and manufacturing cost of the apparatus can be reduced.

Abstract: Provided are a base-station configuration control apparatus, system and method. The base-station configuration control apparatus includes a user interface and a CPU. The user interface receives a user's request to selection of a standard protocol. The CPU receives one or more programs based on a selected standard protocol from a storage, which is connected to an external bus, to download the received programs to a function block through a host interface, based on a SDR technology.

Abstract: Provided is a hardware platform reconfiguring method for a mobile base station. A control signal for controlling the download of a program is generated based on an SDR technique. A program is received from an external device. The program from the external device is downloaded to a hardware module of the mobile base station based on the SDR technique according to the control signal.

Abstract: The present invention relates to an apparatus for generating a clock signal with jitter and a test apparatus including the same. The apparatus for generating a clock signal with jitter in accordance with the present invention includes a voltage-controlled crystal oscillator (VCXO) for generating an output signal including jitter components based on a driving power source having a specific waveform and a controlled voltage, a phase comparator for calculating a phase difference of a reference signal and the output signal, and a loop filter for generating the controlled voltage based on the phase difference calculated by the phase comparator. Accordingly, the PLL circuit unit generates a clock signal including jitter, so that the complexity and manufacturing cost of the apparatus can be reduced.

Abstract: A multi-channel processing system for selectively generating and transmitting/receiving a desired channel (FA: Frequency Assignment) signal and a band-pass filtering method thereof are provided. The multi-channel processing system includes a controller for receiving a channel selection signal including ON/OFF information of the respective channels and generating a filter coefficient corresponding to the channel selection signal; an input signal generator for generating an input signal; and a band-pass filter for changing a predetermined filter coefficient according to the filter coefficient generated by the controller and filtering the input signal from the input signal generator. Accordingly, since the controller can change the filter coefficient of the band-pass filter and selectively generate a channel, an efficient and simple multi-channel processing system using one band-pass filter regardless of the number of generated channels may be provided.