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| Number | Title | Issue Date |
| 8150338 | Method and apparatus for signal peak-to-average ratio reduction A method and apparatus taught herein reduce the peak-to-average ratio (PAR) of a complex-valued signal based on detecting peaks in the signal that are above a peak threshold, characterizing the detected peaks in Cartesian coordinates, generating cancellation pulses ... | 04/03/2012 |
| 7995975 | Method and apparatus for signal peak-to-average ratio reduction A method and apparatus taught herein reduce the peak-to-average ratio (PAR) of a complex-valued signal based on detecting peaks in the signal that are above a peak threshold, characterizing the detected peaks in Cartesian coordinates, generating cancellation pulses ... | 08/09/2011 |
| 7469130 | Polar modulator and method for determining an amplitude offset in a polar modulator A polar modulator contains a first input for supplying an amplitude modulation word and a second input for supplying a phase modulation word. The first input is connected to a first signal path, and the second input is connected to a second signal path. The polar mo... | 12/23/2008 |
| 7395034 | Clipping circuit and radio transmitter using the same A clipping circuit to limit amplitude of an orthogonal baseband signal includes a 16-gonal clipping circuit almost equivalent to a circular clipping circuit. The 16-gonal clipping circuit includes plural stages of series-connected units each including a rectangular ... | 07/01/2008 |
| 7369819 | Digital amplitude modulation transmitter with pulse width modulating RF drive A digital amplitude modulation (AM) transmitter with pulse width modulating RF drive is presented. A plurality of RF amplifiers, each, when turned on, amplifies an applied RF drive signal by the same amount to provide a unit step RF output. An encoder supplies turn-... | 05/06/2008 |
| 7353006 | Closed loop power control of non-constant envelope waveforms using sample/hold A radio frequency output power control system for use in communication systems is disclosed. The power control system is used for a modulation scheme having a non-constant amplitude envelope and comprises a power amplifier having a power amplifier input for receivin... | 04/01/2008 |
| 7340224 | Devices for reducing the dynamic range of signals in transmitters of communication systems A device reduces the dynamic range of a signal at a first point along a signal processing direction in a transmitter of a communication system. The device includes an input to which an input signal is applied, a correction prediction device, a delay device, an addit... | 03/04/2008 |
| 7333782 | Automatic gain controller for achieving high signal-to-noise ratio and low power loss, and a transmitting apparatus and method for use with a mobile communication terminal having the automatic gain controller Provided is an automatic gain controller for obtaining a high a signal-to-noise ratio (SNR), and for reducing power loss by controlling a gain until the gain reaches a maximum value, and a transmitting apparatus and method for use with a mobile communication termina... | 02/19/2008 |
| 7317412 | Techniques for biasing a radio frequency digital to analog converter Various techniques for biasing a radio frequency digital-to-analog converter are described. In one embodiment, a baseband processor may comprise a plurality of output drivers to generate a plurality of base currents for biasing a radio frequency digital-to-analog co... | 01/08/2008 |
| 7315731 | Method of measuring and calibrating frequency down converter A frequency down converter that maintains accuracy even if the frequency pass band is wide uses a reference frequency band within the frequency pass band, the reference frequency band being resistant to degradation by aging or temperature variation. The ideal charac... | 01/01/2008 |
| 7315579 | Trellis coded modulation tails An encoder includes a state machine configured to generate a payloads as a function of a state machine output, and an interface configured to generate a tail as a function of a binary representation of the state machine output at the end of the payload generation. I... | 01/01/2008 |
| 7289005 | Polar modulator and a method for modulation of a signal A polar modulator contains a phase locked loop which is designed to emit a radio-frequency signal at one frequency to one output, with the frequency being derived from the reference signal and from a phase modulation signal at a control input of the phase locked loo... | 10/30/2007 |
| 7280809 | Method for adjusting transmission parameters from a transmitter for digital radio signals A method for adjusting transmission parameters of a transmitter for digital radio signals, for example, broadcast signals, is described, in which context a receiving apparatus receives the digital radio signals emitted by the transmitter and transfers data to the tr... | 10/09/2007 |
| 7277720 | Apparatus, and associated method, for facilitating formation of an apparent push-to-talk communication connection Apparatus, and an associated method, for facilitating formation of an apparent push-to-talk communication session connection at a mobile station operable in a conventional cellular communication system. Upon initiation of push-to-talk operation, a user of the mobile... | 10/02/2007 |
| 7249015 | Classification of audio as speech or non-speech using multiple threshold values A portion of an audio signal is separated into multiple frames from which one or more different features are extracted. These different features are used, in combination with a set of rules, to classify the portion of the audio signal into one of multiple different ... | 07/24/2007 |
| 7239632 | Method and apparatus for converging local area and wide area wireless data networks A converged network accessible by wireless client devices includes a wide area wireless network, a local area wireless network, and a gateway linked to the wide area and local area wireless networks for integrating access to the networks by the wireless client devic... | 07/03/2007 |
| 7236745 | Transceiver power detection architecture A detector module is described wherein the detector module includes a housing with a conductive waveguide, a detector, a temperature sensor, and detector circuitry. The waveguide is made of a conductive material and of an appropriate size for a signal of a particula... | 06/26/2007 |
| 7212790 | Communication apparatus in radio network, transmission control method, threshold value control method, and radio network system The carrier detector 5 notifies the threshold value controller 6 of the received power value of a received signal and then controls various portions so as to defer transmission of the transmission signal when receiving a signal having a received power ... | 05/01/2007 |
| 7200361 | Wireless communication apparatus, wireless communication method and wireless communication media A wireless communication apparatus includes a transmitter to transmit a response request signal, a receiver to receives a response transmitted from a wireless communication medium in response to the response request signal, a level detector to detect a response rece... | 04/03/2007 |
| 7190965 | Apparatus and method for stabilization of the transmission power of radios The invention relates to an apparatus and a method for stabilization of the transmission power of a radio during the active transmission phases thereof. Such stabilization is accomplished by measuring the power drop during the active transmission phase. The gain fac... | 03/13/2007 |
| 7158765 | Method and apparatus for controlling power of a transmitted signal In the method and apparatus of controlling power of a transmitted communication signal, a communication signal is amplified and transmitted. At least one parameter on the transmitted signal is received, and a measure of interference with the transmitted signal is de... | 01/02/2007 |
| 7145962 | Predistortion digital linearizer and gain controlling method thereof A predistortion digital linearizer is disclosed. The linearizer includes a predistorter for distorting a digital input signal in the digital domain to have an opposite characteristic to a nonlinear distortion characteristic of a high power amplifier, in accordance w... | 12/05/2006 |
| 7133466 | Amplifying apparatus The present invention provides an amplifying apparatus including, two amplifiers for receiving input signals in common and for outputting their respective amplified signals, a combiner for combining the output signals of the two amplifiers and for outputting a combi... | 11/07/2006 |
| 7133686 | System and method for identifying interferes in a communication spectrum A method for identifying interferers in a radio communication band, such as the 2.4 GHz ISM band, uses a priori information of the interferers such as channel structure, channel frequency and channel bandwidth. Measured RSSI can be used to detect and identify interf... | 11/07/2006 |
| 7127219 | Transmitter An input signal having an intermediate signal superposed on a DC voltage is applied to a variable attenuation circuit through an amplifier. An output of the variable attenuation circuit is detected by a detecting circuit. A DC voltage from the detecting circuit is c... | 10/24/2006 |
| 7110739 | Multi-transmitter communication system employing anti-phase pilot signals Base station transmitter signals are combined more effectively through the use of anti-phase pilots between pairs of transmission paths. At the combiner, the pilots will cancel when the amplitude, phase, and delay of the two transmission paths entering the combiner ... | 09/19/2006 |
| 7088967 | Data-compensating power measurement A method and a device for compensating a data-dependency of a power measurement caused by linear modulation is described. The method comprises performing a first measurement (160) of a transmitted output power and performing a second measurement (160) ... | 08/08/2006 |
| 7072626 | Polar modulation transmitter A polar modulation transmitter circuit provides reduced ACPR in its output signal by controlling the relative delay between its envelope and phase modulation operations based on direct or indirect feedback measurement the output signal's ACPR. Such measurement and a... | 07/04/2006 |
| 7055380 | Transmitter for tire condition monitoring apparatus A transmitter is located in a tire of a vehicle and transmits data indicating a tire condition using a carrier wave. The transmitter has an oscillator circuit and a transmission controller. The oscillator circuit generates the carrier wave. The transmission controll... | 06/06/2006 |
| 7058371 | Mechanism for modulating wireless communication signals A modulating mechanism is provided comprising a first storage and a corresponding first DAC, and a second storage and a corresponding second DAC. The first storage stores an adjusted digital representation of a first waveform, while the second storage stores an adju... | 06/06/2006 |
| 7054383 | Method for the determination of the average long-term power of digital modulated signal A method and system for determining the average long-term is described, in which a short-term power of a segment of the input signal is determined and a data sequence is produced that is contained in the segment and with which the input signal is modulated. A refere... | 05/30/2006 |
| 7042292 | Gain control circuit, and a radio communication apparatus using the same A gain control circuit comprises a variable gain circuit having a predetermined gain control range and a control voltage supply circuit for supplying an internal control voltage to the variable gain circuit as a gain control signal. In this gain control circuit, the... | 05/09/2006 |
| 7035772 | Method and apparatus for calculating data integrity metrics for web server activity log analysis A method, apparatus, and computer implemented instructions for maintaining data integrity in logs in a data processing system. A log is reviewed. A determination is made as to whether the log contains a data loss. Data may be added to replace the data loss in the lo... | 04/25/2006 |
| 7035296 | Data transmission system using at cellular phones A data transmission system for cellular phones. A video data encoder encodes video data, and an audio data encoder encodes audio data. A video data storage unit stores encoded video data, and an audio data storage unit stores encoded audio data. A multiplexer multip... | 04/25/2006 |
| 7031676 | Radio frequency transmitter having translational loop phase equalization A Radio Frequency RF transmitter includes a translational loop architecture that supports non-constant envelope modulation types and includes by adjusting the envelope of the translational loop at the translational loop output. The RF transmitter includes a phase eq... | 04/18/2006 |
| 7015758 | Gain control circuit, and a radio communication apparatus using the same A gain control circuit comprises a variable gain circuit having a predetermined gain control range and a control voltage supply circuit for supplying an internal control voltage to the variable gain circuit as a gain control signal. In this gain control circuit, the... | 03/21/2006 |
| 7013115 | Method for the generation of modulation by frequency division followed by frequency multiplication, and radiofrequency apparatus Method and radiofrequency apparatus comprising at least one transmitter and/or one receiver of one or more useful signals comprising at least one device adapted to applying a coefficient to the useful signal or signals. Application to BPSK to QPSK type modulation. | 03/14/2006 |
| 7013145 | Methods and apparatus for utilizing radio frequency spectrum simultaneously and concurrently in the presence of co-channel and/or adjacent channel television signals by adjusting transmitter power or receiver sensitivity To address the scarcity of radio frequency (RF) spectrum, the disclosed systems offer unique ways to mitigate interference between television broadcasters (including their direct audience and viewers served via cable television) and other concurrent users of the RF ... | 03/14/2006 |
| 7010276 | Communications signal amplifiers having independent power control and amplitude modulation The present invention, generally speaking, provides methods and apparatus for producing an amplitude modulated communications signal, in which a constant-envelope carrier signal is modified in response to a power control signal to produce a modified constant-envelop... | 03/07/2006 |
| 7006814 | Direct conversion receiver and transceiver A receiver of the direct conversion system by which problems arising from interference between a reception signal and a local signal used by a quadrature demodulator on the reception side are moderated. Where the carrier frequency of a transmission signal is represe... | 02/28/2006 |
