Abstract: A multiple linear regression frequency estimation method and system. A phase sequence of a received signal is derived and divided into several subsequences according to predetermined rules. The phase differences of the subsequences are calculated for frequency estimation using linear regression analysis. A plurality of frequency estimation values are obtained corresponding to each subsequence and combined.

Abstract: A wireless communication apparatus and method, and a web browser using the apparatus are disclosed. The wireless communication apparatus is configured to communicate with a wireless base station. The wireless communication apparatus includes a communication unit, a switch unit, and an adjustment unit. The switching unit repeatedly switches the wireless communication apparatus from a sleeping mode to a listening mode after a listening interval, and the communication unit is able to communicate with the wireless base station during the listening mode. When the wireless communication apparatus performs a data access process with the wireless base station, the adjusting unit adjusts the listening interval to a first interval. After the wireless communication apparatus completes the data access process with the wireless base station, the adjusting unit adjusts the listening interval to a second interval, wherein the second interval is smaller than the first interval.

Abstract: A system and a method for reading a large number of RFID tags at the same time. The system comprises: a magnetic field provider for providing a reading space so as to accommodate the plurality of RFID tags, the magnetic field provider further comprising a plurality of magnetic field units and a loader for loading the plurality of magnetic field units disposed around the reading space to provide the reading space with a magnetic field; and a reader for receiving a signal when a least one of the plurality of RFID tags transmits the signal induced by the magnetic field. The method comprises steps of: providing a reading space so as to accommodate the plurality of RFID tags; providing the reading space with a plurality of magnetic fields; and reading a signal when a least one of the plurality of RFID tags transmits the signal induced by the plurality of magnetic fields.

Abstract: A method of channel estimation is for a receiver to receive signals so as to estimate channel impulse response. The signal consists of a first data burst and a second data burst at least where a first training sequence and a second training sequence are interposed between the first data burst and the second data burst respectively. The channel estimation method comprises the following steps. First, estimating the channel impulse response of the first training sequence and the second training sequence respectively where each of the corresponding first channel impulse response and the corresponding second channel impulse response have n impulses so as to gather a first channel impulse response (An) and a second channel impulse response (Bn). Next, estimating channel impulse response (Cn) of a designated position of the data burst located between the first training sequence and the second training sequence.

Abstract: A method for channel estimation is provided. Firstly is to estimate channel impulse response (CIR) of training sequence. Next is to generate a soft data by means of an equalizer according to the CIR of the training sequence. Subsequently is to estimate CIRs of data sequences according to the interposed training sequence by correlation channel estimation. Next is to define a weight by means of auto-correlation of the estimated data sequence and then to cancel the interference of channel by the weight. Finally is to use the soft data and the non-interference CIR to find out the data stored in the data sequence.

Abstract: An adaptive Viterbi equalizing method and a related apparatus are disclosed. The apparatus includes a match filter for equalizing a plurality of original symbols of a received signal to generate a plurality of equalized symbols according to a plurality of channel responses, a Viterbi detector for generating a soft-decision value corresponding to a specific original symbol and generating a plurality of hard-decision values corresponding to the original symbols according to the equalized symbols, and an adaptive channel estimation circuit for generating a reproduced symbol through utilizing the channel responses and the hard-decision values and for adjusting one of the channel responses through utilizing the soft-decision value and a difference between the reproduced symbol and the specific original symbol.

Abstract: A multiple linear regression frequency estimation method and system. A phase sequence of a received signal is derived and divided into several subsequences according to predetermined rules. The phase differences of the subsequences are calculated for frequency estimation using linear regression analysis. A plurality of frequency estimation values are obtained corresponding to each subsequence and combined.