Patent application number | Description | Published |
20090154446 | DATA FRAME, TELEGRAM, METHOD FOR CONTROLLING AN RF-TRANSCEIVER AND MOBILE COMMUNICATION SYSTEM - The invention is related to a data frame, particularly to a data frame configured to be received and processed by an RF-transceiver and a data frame structure. The invention is also related to a method for controlling an RF-transceiver. | 06-18-2009 |
20100080322 | Digital Modulation - The present application relates to embodiments of methods and a device for digital modulation. In a first embodiment of the method, the following steps are executed:
| 04-01-2010 |
20100244944 | Phase Locked Loop-Based Tuning Adjustable Filter - This disclosure relates to phase locked loop based frequency tuning of an adjustable filter. | 09-30-2010 |
20120140685 | SIMPLIFIED ADAPTIVE FILTER ALGORITHM FOR THE CANCELLATION OF TX-INDUCED EVEN ORDER INTERMODULATION PRODUCTS - One embodiment of the present invention relates to an adaptive filtering apparatus comprising first and second real valued adaptive filters, respectively configured to receive an adaptive filter input signal based upon a transmission signal in a transmission path. The first real valued adaptive filter is configured to operate a real valued adaptive filter algorithm on the input signal to estimate a first intermodulation noise component (e.g., an in-phase component) in a desired signal and to cancel the estimated noise. The second real valued adaptive filter is configured to operate a real valued adaptive filter algorithm on the input signal to estimate a second intermodulation noise component (e.g., a quadrature phase component) in the desired signal and to cancel the estimated noise. Accordingly, each filter operates a real valued adaptive algorithm to cancel a noise component, thereby removing complex cross terms between the components from the adaptive filtering process. | 06-07-2012 |
20120142300 | COMMUNICATION DEVICE INCLUDING MULTIPLE LO RECEIVERS - Some embodiments of the present disclosure relate to multiband receivers that include at least one divider unit having a divisor that is other-than-two. For example, in some embodiments the divisor is an odd integer (e.g., three). Such divisors allow oscillators for respective receiver subunits in a multi-band receiver to have frequencies that are sufficiently different from one another so as to limit cross-talk interference there between, even when the receiver subunits are concurrently receiving data on adjacent channels. To facilitate this other-than-two divisor, a phase error compensation block is often used to compensate for the effects of using the other-than-two divisor. | 06-07-2012 |
20130225101 | SECOND-ORDER FILTER WITH NOTCH FOR USE IN RECEIVERS TO EFFECTIVELY SUPPRESS THE TRANSMITTER BLOCKERS - The disclosed invention relates to a transceiver system comprising a notch filter element configured to suppress transmitter blockers (i.e., transmitter interferer signals) within a reception path. In some embodiments, the transceiver front-end comprises a differential reception path, having a first differential branch and a second differential branch, configured to provide an RF differential input signal having a transmitter blocker to a transimpedance amplifier, comprising a first-order active filter and a notch filter element. The notch filter element comprises a stop band corresponding to a frequency of a transmitted signal, such that the notch filter element suppresses the transmitted blocker without degrading the signal quality of the received differential input signal. | 08-29-2013 |
20140038587 | METHOD FOR SEARCHING FOR A RADIO CELL AND MOBILE TERMINAL - A method for searching for a radio cell is provided comprising determining, for each of a plurality of frequencies, a reception strength value indicating the reception strength within a first bandwidth around the frequency, wherein the first bandwidth is smaller than a second bandwidth with which a radio cell to be searched is operated; determining, based on the determined reception strength values, a spectral position for a radio cell at which a cell search is to be carried out; and carrying out a cell search at the determined spectral position. | 02-06-2014 |
20150318836 | SECOND-ORDER FILTER WITH NOTCH FOR USE IN RECEIVERS TO EFFECTIVELY SUPPRESS THE TRANSMITTER BLOCKERS - The disclosed invention relates to a transceiver system comprising a notch filter element configured to suppress transmitter blockers (i.e., transmitter interferer signals) within a reception path. In some embodiments, the transceiver front-end comprises a differential reception path, having a first differential branch and a second differential branch, configured to provide an RF differential input signal having a transmitter blocker to a transimpedance amplifier, comprising a first-order active filter and a notch filter element. The notch filter element comprises a stop band corresponding to a frequency of a transmitted signal, such that the notch filter element suppresses the transmitted blocker without degrading the signal quality of the received differential input signal. | 11-05-2015 |