Abstract: The present invention relates, in general, to a Radio Frequency Identification (RFID) system for reading or recording RFID tag information using radio frequencies and, more particularly, to an intelligent RFID system for low-powered reader-tag communication, which includes an RF shower system (370) that radiates a high power electromagnetic wave in a high frequency band to activate the passive tags having no batteries and that has predetermined communication means for reading information from a plurality of passive tags existing in a radiation zone having a predetermined size, storing the read tag information, and providing the stored tag information when a request is received from an RFID reader (310).

Abstract: An apparatus for recovering symbol timing in a CAP-based high-speed communication system such as an ADSL or VDSL, using a single-sided prefilter pair, in which timing information is obtained by means of the single-sided prefilter pair and a multiplier instead of a squaring unit used in general communication systems, for the recovery of accurate data, so that the symbol timing can be recovered through a digital signal process at a clock rate which is four times as high as a symbol transmission rate. According to the present invention, the single-sided prefilter pair and multiplier are used instead of the squaring unit spreading a frequency band. Therefore, the frequency band is not spread, so that the timing can be obtained with no signal overlapping due to sampling, although a sampling frequency is four times as high as a symbol frequency.