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Match Document Document Title
8139685 Systems, methods, and apparatus for frequency control  
A receiver according to one embodiment includes a frequency control unit configured to receive a stream of samples including a plurality of received instances of a transmitted signal. The frequency...
8111181 Single-ended polar transmitting circuit with current salvaging and substantially constant bandwidth  
An embodiment of the invention provides a single-ended polar transmitting circuit. The single-ended polar transmitting circuit comprises a DAC, a differential-to-single-ended converter, a GmC...
8098683 Method and system for implementing a single weight (SW) single channel (SC) MIMO system with no insertion loss  
In a RF communications system, aspects for implementing a single weight single channel MIMO system with no insertion loss may comprise generating at least one control signal that is utilized to...
8086202 Method for removing the coupling and correlation of antennas, and wireless device having the function of removing the coupling and correlation of antennas  
A wireless device, which employs the method and function of removing the coupling and correlation of antennas, picks up the noise components released from inside the device together with the...
8059525 Apparatus and method for performing ranging in a communication system  
A ranging apparatus in a communication system is provided. A terminal generates a ranging code for ranging with a base station, maps the ranging code to at least one sub-carrier so the ranging code...
8050640 Diverse antenna system  
An improved antenna diversity system is provided. The antenna diversity system has at least two spaced-apart antennas, with each antenna providing a respective antenna signal. The signal(s) may be...
8040944 Adaptive digital filter, signal processing method, FM receiver, and program  
A complex signal in which one of two signals that are generated from one real signal and that have phases shifted from each other by 90° is a real part and the other signal is an imaginary part is ...
8027411 Wireless receiver  
A wireless receiver having improved receiving characteristics is provided. The wireless receiver (151) is provided with an antenna (152) for receiving wireless signals including a modulation signal...
8022781 Redundancy system for a telecommunication system and related methods  
A redundancy system for a co-channel telecommunication system and related methods. Implementations of the redundancy system may include at least a first modulator and a second modulator having a...
8018914 Radio communication device, demodulation method, and frequency deflection correction circuit  
A demodulation section 13 receives a TDMA-TDD based phase-modulated burst signal of mobile communications and demodulates the burst signal by a synchronous detection system (or a quasi-synchronous...
7933555 System and method for reducing phase noise  
Systems and methods that reduce phase noise are provided. In one embodiment, a method may include one or more of the following: generating a signal at a particular frequency in which the signal may...
7929928 Frequency phase correction system  
A frequency phase correction system and method are described that provides a receiver with a greater ability to lock onto relatively weak radio frequency signals by determining and estimating an...
7920837 Method and system for utilizing undersampling to remove in-band blocker signals  
Methods and systems for wireless communication are disclosed and may include band-limiting a wireless signal utilizing a programmable bandpass filter, generating a first signal by undersampling...
7876851 Apparatus and method for feeding back information on channel state for scheduling in multiple antenna system  
An apparatus and method for controlling amount of information to be fed back in a multiple antenna system in a multi-user environment. The apparatus includes a channel estimator which estimates...
7860464 Method and system for a programmable local oscillator generator based on quadrature mixing using a phase shifter  
Methods and systems for a local oscillator generator based on quadrature mixing using a phase shifter. Aspects of one method may include generating a local oscillator signal, where a frequency of...
7825773 Mobile radio frequency identification (mRFID) reader  
A mobile radio frequency identification (mRFID) reader having a receiving circuit is provided. The receiving circuit includes a local oscillator which generates a carrier signal at a predetermined...
7769358 Radio system, radio transmitter, and radio receiver  
A radio system having an improved phase noise characteristic and a thereby improved communication quality, a radio transmitter, and a radio receiver. In the radio system, a radio transmitter (101)...
7769107 Semi-blind analog beamforming for multiple-antenna systems  
Complex antennas weights for use in beamforming in a multiple-antenna system are determined based upon clear channel assessment (CCA) information in a wireless networking environment.
7742750 Systems and methods for antenna diversity combining for satellite radio signals  
Systems and methods are presented for digital antenna diversity combining. In exemplary embodiments of the present invention, at least two antenna signal paths can be communicably connected to a...
7684572 Mixer apparatus and music apparatus capable of communicating with the mixer apparatus  
A plurality of music apparatus 10 to 30 such as an electronic musical instrument and a microphone apparatus are connected by wireless to a mixer apparatus 40. A Bluetooth module is adopted as...
7672640 Multichannel absorberless near field measurement system  
A near field microwave scanning system includes a switched array of antenna elements forming an array surface, a scan surface substantially parallel to the array surface and separated by a distance...
7627295 Downconverter and upconverter  
A downconverter and upconverter are provided which can obtain a sufficient image rejection ratio in a low-Intermediate Frequency (IF) scheme while reducing power consumption and can suppress Error...
7616930 Determining a phase adjustment in accordance with power trends  
Calculating a phase adjustment includes establishing a current phase adjustment for a signal transmitted from a modifying communication device to a feedback communication device. A control signal...
7600247 Television tuner  
A television tuner that receives a television signal using a smart antenna includes a rescan unit that executes rescan; that is: that when an instruction that instructs direct selection of a...
7573398 System and method of communicating signals  
A communication system is presented. The system includes one or more transmitters configured to transmit a signal, where each of the signals generated by the one or more transmitters corresponds to...
7400867 Radio broadcast receiver  
A radio broadcast receiver is provided which reduces the degradation in quality of diversity-received signals. When a difference in level between a reception signal of a main antenna and a...
7398071 Loop filter with gear shift for improved fractional-N PLL settling time  
An integrated circuit radio frequency (RF) transmitter includes a phase locked loop having a multi-mode loop filter that is operable to provide wide band response with a fast settle time in a...
7369834 Impedance-matched IQ network for an image rejection circuit  
An impedance-matched IQ network includes a phase shift circuit and a back termination. The phase shift circuit includes an in-phase mixer port for receiving the in-phase signal, a quadrature-phase...
7349379 Channel normalization  
Soft estimate normalization for weighted multiantenna high-order modulation data channel together with separate antenna pilot channels using averaging in first time slots of a transmission time...
7340230 Receiver architectures utilizing coarse analog tuning and associated methods  
Receiver architectures and associated methods are disclosed that provide initial analog coarse tuning of desired channels within a received signal spectrum, such as a set-top box signal spectrum...
7333792 Multi-carrier receiving method and apparatus  
An FFT unit subjects a baseband signal to FFT operation. An IQ-to-phase conversion unit converts an in-phase component value and a quadrature component value of each of a plurality of signals on...
7330707 Hetrodyne receiver and IC  
In a heterodyne receiver, the effect of an image interference signal that occurs in a case where a low intermediate frequency is used is alleviated. Circuits (12I), (12Q), (13I), (13Q), and (14)...
7324794 Phase combining diversity  
Embodiments of methods of receiving transmitted signals are disclosed. The methods include a first antenna receiving a second signal, a second antenna receiving a second signal, adjusting a phase...
RE39982 Diversity circuit for magnetic communication system  
A magnetic communication system includes a transmitter have a single coil transducer, and a receiver having a three orthogonally oriented coil transducers. The signal processing circuitry in the...
7260168 Network measurement method and apparatus  
The apparatus measures timing variations, such as the jitter or wander in a timing signal (100) of a telecommunications network. A recovered clock signal is sampled and digitized to produce a...
7236743 Method and arrangement for noise rejection in a receiver circuit  
In a method for interference suppression using a quality-adjustable bandpass filter in a receiver circuit for carrier-modulated received signals (SIN), the bandpass filtered received signal (Bout)...
7228104 Adaptive canceller for frequency reuse systems  
An adaptive interference canceller for canceling an interfering signal corresponding to a delayed, frequency translated, amplitude and phase offset version of a transmitted signal contained in a...
7203470 Phase combining diversity receiving apparatus and method  
An in-phase combining diversity receiving apparatus is disclosed by which the size (gain) of a receiving signal as well as its phase is controlled and signals received through each antenna pass...
7190939 Time division IQ channel direct conversion receiver and method therefor  
A direct conversion receiver includes a local oscillator for generating a sinusoid, a mixer for receiving an incoming signal and for mixing the incoming signal with the sinusoid, an...
7184740 Direct conversion receiver for calibrating phase and gain mismatch  
A direct conversion receiver (DCR) calibrated for phase and gain mismatch is provided. The DCR comprises a poly-phase filter that generates mismatched in-phase and quadrature-phase differential...
7149491 Radio reception apparatus symbol timing control method, and symbol timing control program  
In a radio reception apparatus, a quadrature detector provides its digital output signal to a band-limiting filter after lowering a sampling frequency by a sampling frequency converter. Based on a...
7088955 Method and apparatus for acquiring and tracking pilots in a CDMA communication system  
Techniques to acquire and track pilots in a CDMA system. In an aspect, frequency acquisition of a number of signal instances (i.e., multipaths) in a received signal may be achieved concurrently...
7027786 Carrier and clock recovery using universal frequency translation  
Coherent detection of a received EM signal using universal frequency translation (UFT) is described herein. The received EM signal is sampled according to a sub-harmonic LO signal, where the LO...
7016404 Automatic frequency correction for mobile radio receivers  
A device and a method for automatic frequency correction are used in mobile radio receivers. After channel estimation has been performed, the phases of the received data symbols are analyzed in...
6961394 Diversity receiving apparatus capable of preventing reduction of C/N ratio  
A diversity receiving apparatus comprises a plurality of antennas, a plurality of receiving circuits connected to the plurality of antennas, respectively, an adding unit for adding reception...
6959175 Receiver capable of receiving radio signals in a preferred state at all times  
A receiver has an adder for output intermediate-frequency signals of a plurality of receiving blocks, a demodulator for an added intermediate-frequency signal, adjustable reference-signal generator...
6944243 Diversity reception device outputting maximized C/N ratio of synthesized signal  
A diversity reception device includes a plurality of antennas. A plurality of receiver circuits are connected to the corresponding antennas. An adder adds the received signals output from the...
6870892 Diversity receiver with joint baud clock recovery  
First and second RF signals in the respective first and second channels of a multiple channel diversity receiver are processed jointly in a joint timing loop filter for baud clock recovery. The...
6868135 Method and apparatus for correcting for a phase shift between a transmitter and a receiver  
A method and apparatus for correcting for a phase shift between a transmitter and receiver comprising the steps of: a) transmitting a signal from a transmitter (14);b) receiving the transmitted...
6807406 Variable gain mixer circuit  
In accordance with embodiments of the present invention, a receiver system is provided with a variable gain mixer circuit that is advantageous over current architectures used in wireless...
Matches 1 - 50 out of 140 1 2 3 >