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7373127 |
Digital beam forming for communications systems
An antenna-receiver communications system and method is provided to mechanize multibeam mobile antenna-receive subsystems. Digital beam forming for modern wideband mobile communications systems is...
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7369832 |
Receiving diversity apparatus and method of mobile station for high data rate type mobile communication system
A receiving diversity apparatus and method for a mobile station in an HDR mobile communication system measures C/I values of pilot channels on respective antennas, measures a C/I value of in-phase...
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7363016 |
Diversity receiving apparatus and method
A communication system comprises a first signal adjusting unit for amplifying a first signal received by a first antenna; a second signal adjusting unit for amplifying and phase-shifting a second...
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7342986 |
Digital PLL device
A phase-locked-loop device includes a clock generator for generating a reference clock based on a binarized playback signal and a frequency of run-length data and for generating N-phase clocks...
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7327994 |
Architecture for multiple-antenna systems
The invention is a system and method for sharing components of a single-path receiver or transmitter system multiple antennas. Specifically, according to one embodiment of the present invention,...
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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...
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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...
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7289827 |
Method and apparatus for performing directional re-scan of an adaptive antenna
An antenna for use with a receiver in a wireless communications system includes antenna elements for generating antenna patterns, and a first module for applying weights to a signal received at...
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7266356 |
Mobile communication terminal apparatus and mobile communication method
A mobile communication terminal apparatus includes an antenna unit configured to select antenna radiation characteristics, and receives a first signal transmitted from transmitting station...
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7236808 |
Vertical dynamic beam-forming
A wireless communication system for transmitting and receiving wireless communications using at least one beam is disclosed. The system comprises a plurality of WTRUs, at least one beam-forming...
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7236750 |
Techniques for correcting for phase and amplitude offsets in a MIMO radio device
Techniques to correct for phase and amplitude mismatches in a radio device in order to maintain channel symmetry when communicating with another device using MIMO radio communication techniques....
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7221699 |
External correction of errors between traffic and training in a wireless communications system
A method and apparatus are provided that allows a training and traffic signal to be compensated for phase errors without modifying a receiver. In one embodiment, the invention encompasses an...
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7212789 |
Tunable duplexer
The method and apparatus herein identifies tunable duplexer in a communication system. The tunable duplexer includes a tunable receiver filter, a tunable transmitter filter, a variable receiver...
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7206561 |
Radio equipment
A radio equipment, wherein an attenuator ( 10 ) is inserted between antennas ( 91, 92 ) and a radio module ( 2 ), and output and input sensitivities are raised and lowered simultaneously so as to...
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7206551 |
High frequency switch module and multi-layer substrate for high frequency switch module
A high frequency switch module comprises an antenna port, a plurality of transmission signal ports, a plurality of reception signal ports, a high frequency switch, a plurality of LPFs and a...
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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...
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7184734 |
Radio communication apparatus
A radio communication apparatus using an array antenna has a plurality of reception branches for conveying reception signals received at the antenna element of the array antenna, and a calibration...
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7181243 |
Frequency translation
The present invention provides a serrodyne architecture that is capable of operating at high frequencies. The architecture generally includes a coupler, a delay line, and a switching system. The...
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7171175 |
Method for receiving radio frequency signal and a receiver device
In a method ( 300 ) for receiving a radio signal, there are steps of: receiving ( 301, 303 ) first and second received signal components by use of first and second antennas having different...
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7167691 |
Transmission diversity method in mobile communication system
Disclosed is a transmission diversity method in a mobile communication system, by which optimal transmission diversity can be provided in case that a base station of the mobile communication system...
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7162210 |
Method and device of antenna pattern forming
Improvement of interference canceling efficiency and communication system capacity due to the use of the optimal decision function in adaptation of the adaptive antenna array weight factors. An...
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7139533 |
Mobile communication terminal
Embodiments of the present invention are directed to a mobile communication device that includes a plurality of antennas for receiving signals and is configured to reduce the deterioration of the...
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7117018 |
Array beamforming with wide nulls
A method and implementation of wireless communication are disclosed in which wireless signals are exchanged between at least one remote client and a directional antenna array associated with a...
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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,...
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7095995 |
Diversity receiver and orthogonal frequency division multiplexed signal receiving method
A technique for stably receiving an orthogonal frequency division multiplexed signal by means of a simple structure. Delay circuits 9–11 add delay times to the signals simultaneously received by...
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7092690 |
Genetic algorithm-based adaptive antenna array processing method and system
A genetic processor is used to process a plurality of baseband signals in a communication system. Signals received at an antenna array are processed to form chromosomes based on...
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7072635 |
Method for combining data from phase indeterminate data streams for raking
A received wireless signal contains a plurality of path components, each having a phase indeterminate data stream derived from an original data stream. The receiver splits the received signal into...
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7065131 |
Processor and method for weight detection in a closed loop diversity mode WCDMA system
A receiver and method for weight detection use received channel estimations and prior feedback information sent to a transmitter to estimate channel weights. The estimated channel weights may have...
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7046978 |
Method and apparatus for transmit pre-correction in wireless communications
A wireless communication system includes a base station having a plurality of transmit antennas transmits pilot signals to a subscriber station. The subscriber station performs channel measurements...
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7024163 |
Method and apparatus for adjusting feedback of a remote unit
Methods and apparatus implementing spatial processing in a remote unit. In general, in one aspect, the present invention provides a remote unit, that includes a plurality of antennas and a spatial...
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7006809 |
Adaptive diversity receiver architecture
A diversity receiver circuit that adaptively selects a variable number of one or more antennas for use in improving signal quality. Each antenna is provided its own receiver that each generates a...
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6999724 |
Slowing the observed rate of channel fluctuations in a multiple antenna system
A method and apparatus for reducing the observed rate of change of the channel characteristics in a system with multiple antennas at a mobile terminal. The slowing down of the observed channel...
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6983172 |
Method and apparatus for transmitting a traffic signal using an adaptive antenna array
A method ( 100 ) is provided for transmitting a traffic signal with an adaptive antenna array of a base transceiver such that a subscriber unit utilizes a non-dedicated pilot transmitted from a...
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6970686 |
Diversity system and diversity method
A synchronous signal position detection unit detects symbol synchronous signals according to OFDM from the signals received by the respective antennas. A delay measurement unit measures a relative...
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6965762 |
System and method for antenna diversity using joint maximal ratio combining
A composite beamforming technique is provided wherein a first communication device has a plurality of antennas and the second communication has a plurality of antennas. When the first communication...
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6963735 |
Method and arrangement for receiving a frequency modulated signal
A method and arrangement for receiving a frequency modulated signal, includes mixing the frequency modulated signal into a low-frequency signal, detecting the falling and rising edges of said...
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6947718 |
Deviation compensation apparatus
A compensating part compensates for deviations on transmission paths, and a pre-deviation signal combining part or a post-deviation signal combining part combines signals on the transmission paths...
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6928276 |
Signal reception circuit and communication device having the same
A signal reception circuit includes a main antenna which receives signals in at least two predetermined reception frequency bands. A sub-antenna receives a signal in one of the reception frequency...
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6925293 |
Antenna diversity system with phase controlled summation of antenna signals
An antenna diversity system for receiving frequency-modulated (FM) radio signals with the phase-controlled summation of antenna signals for motor vehicles equipped with a multi-antenna system...
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6922169 |
Antenna, base station and power coupler
A power coupler including a differential phase shifter for differentially adjusting the relative phase between signals on a pair of signal lines; and a hybrid coupler which is coupled to the pair...
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6917794 |
Phase compensation circuit
A phase compensation circuit, for use with an FM reception system, includes a delay circuit and a control circuit. The delay circuit receives a composite input signal that exhibits a variable phase...
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6909759 |
Wireless receiver using noise levels for postscaling an equalized signal having temporal diversity
A wireless receiver for receiving an incoming signal having spatial and temporal diversity. The receiver uses noise-based prescaling of multiple receiver chain signals for optimally combining the...
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6907263 |
Cellular antenna architecture
An antenna architecture permitting tri-band and quad-band transmission and reception of GSM standardized frequencies in a mobile unit with a required gain without increasing power consumption. The...
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6895230 |
System and method for delay equalization of multiple transmission paths
The present invention provides systems and methods for addressing the effects of non-linear phase response, such as by equalizing electrical delays among transmission paths. A preferred embodiment...
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6892059 |
Closed-loop transmitting antenna diversity method, base station apparatus and mobile station apparatus therefor, in a next generation mobile telecommunications system
A closed-loop transmitting antenna diversity method, and a base station and mobile station apparatus therefore in a next generation mobile telecommunications system, the closed-loop transmitting...
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6873834 |
Wireless terminal diversity scheme
The present invention relate to a wireless communication systems and in particular relates to a wireless diversity scheme. Diversity techniques are well established and known to help in many...
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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...
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6862440 |
Method and system for multiple channel wireless transmitter and receiver phase and amplitude calibration
The present invention provides a method and system for estimating common amplitude and phase errors of a multiple channel wireless system. The multiple channel wireless system includes a plurality...
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6862316 |
Spatial and temporal equalizer and equalization method
Outputs from respective elements of an array antenna 21 are demodulated, and the demodulated outputs are stored in storage means 29 . The demodulated outputs are multiplied by tap coefficients...
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6853839 |
Method of antenna-weight estimation and mobile communication terminal
An antenna weight estimation method in a mobile communication system is capable of improving the accuracy of antenna weight estimation values, thereby improving communication quality and increasing...
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