| Patent application number | Description | Published |
|---|
| 20080238808 | Diversity receiver - A diversity receiver is provided with antennas ( | 10-02-2008 |
| 20090274038 | Digital broadcasting receiving apparatus with channel estimation function - A delay profile generating circuit | 11-05-2009 |
| 20100013553 | DEMODULATOR, DIVERSITY RECEIVER, AND DEMODULATION METHOD - A diversity receiver includes: a plurality of demodulating means for demodulating inputted OFDM signals, to output their demodulated signals; noise component calculating means provided for each demodulating means, for calculating noise components included in the demodulated signals outputted from corresponding demodulating means; channel profile calculating means provided for each demodulating means, for calculating channel profiles based upon the demodulated signals outputted from corresponding demodulating means; transmission channel decision means for determining transmission channel based upon the channel profiles; reliability information generating means for generating reliability information indicating reliability of the demodulated signals outputted from each demodulating means, based upon the noise components and the results of the determinations by the transmission channel decision means; a weighting factor calculating means for calculating, depending on the reliability information, weighting factors used in combining the demodulated signals outputted from each demodulating means; and a combining means for combining, depending on the weighting factors, the demodulated signals outputted from each demodulating means. | 01-21-2010 |
| 20100086083 | RECEIVING APPARATUS AND RECEIVING METHOD - It is an object of the present invention to reduce deterioration of the receiving performance due to the inter-carrier interference after a discrete Fourier transform in a receiving apparatus with an OFDM signal. A frequency transform part transforms a frequency of a received signal to a desired frequency. A time axis data expansion part extracts at least K+N pieces of data corresponding to one symbol including a guard interval from output of the frequency transform part to generate 2N pieces of data by adding zero before and after the extracted data. A window shaping part shapes a waveform by multiplying output of the time axis data expansion part by a window coefficient, and a discrete Fourier transform part performs a discrete Fourier transform with respect to output of the window shaping part. A demodulation part performs a demodulation of a sub-carrier by extracting a sub-carrier component. An inter-carrier interference component calculation part calculates an inter-carrier interference component from output of the discrete Fourier transform part. A window coefficient generation part selects a window coefficient on the basis of output of the inter-carrier interference component calculation part to output to the window shaping part. | 04-08-2010 |
| 20100172429 | DIGITAL BROADCASTING RECEIVING APPARATUS - A digital broadcasting receiving apparatus is characterized in that the digital broadcasting receiving apparatus is provided with an antenna combination determination processing unit for selecting at least two antennas from among a plurality of antennas which have directivities in different directions and each of which receives a digital broadcasting wave transmitted from outside the digital broadcasting receiving apparatus, and for providing an instruction for switching among the above-mentioned plurality of antennas on the basis of a state of reception of the digital broadcasting waves received by the selected antennas, and switches for switching among the above-mentioned plurality of antennas according to the instruction from the above-mentioned combination determination processing unit. | 07-08-2010 |
