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7392016 |
Data transmission rate control
A method includes monitoring a variable-rate data communication channel to determine its signal-to-noise ratio, and adjusting the data transmission rate of the variable rate data communication...
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7389107 |
Reactive management of dropped calls in a wireless communication system
A method and system is disclosed for reactively managing dropped calls in a wireless communication system. A mobile station determines that it has experienced a dropped call. In response, the...
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7379864 |
Method and apparatus for the detection of previous packet loss in non-packetized speech
A method and apparatus for detecting previous packet loss in non-packetized speech by applying one or more filters to a segment of said non-packetized speech, each of said one or more filters...
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7379725 |
LNA gain adjustment in an RF receiver to compensate for intermodulation interference
A Radio Frequency (RF) receiver includes a low noise amplifier (LNA) and a mixer coupled to the output of the LNA. The gain of the LNA is adjusted to maximize signal-to-noise ratio of the mixer and...
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7369812 |
Method and circuit arrangement for determining the signal strength in receivers with complex signal processing
In order to provide a method of determining the signal strength in a receiver or transmitter with complex signal processing using the in-phase channel (I channel) and the quadrature channel (Q...
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7366475 |
Signal strength measurements in cellular telecommunication systems
A mobile station (MS) and method for estimating received signal strength of a radio signal from a neighboring cell in a cellular radio telecommunication network. The MS measures the received signal...
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7359707 |
Wireless communications handoff method and system employing such
A method for reducing a delay in a wireless communications system resulting from a handoff while mitigating a risk of premature termination of wireless communications, the method includes comparing...
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7359692 |
Method of and device for antennae diversity switching
The invention relates to the field of wireless communications, more particularly to a method of and device for switching between antennae in communication with a diversity receiver, each of the...
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7356071 |
Method and apparatus for estimating signal-to-noise ratio based on dedicated physical channel pilot symbols
The present invention is related to a method and apparatus for estimating signal-to-noise ratio (SNR) based on dedicated physical channel (DPCH) pilot symbols in a wireless communication system. A...
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7346477 |
Testing a station's response to a reduction in wireless signal strength
Techniques for testing a station, such as a wireless-enabled device, are described. A first method relates to evaluating a station configured to communicate with at least one access point. Another...
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7346173 |
Method and circuit assemblage for influencing the treble reproduction of an audio signal
A method for influencing, e.g., for decreasing, the treble reproduction of an audio signal for reproduction obtained from a received signal, the received field strength and reception quality of the...
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7340248 |
Calibration apparatus
In a calibration apparatus, which calibrates the phases of main signals input to each of the antenna elements of an array antenna, a calibration signal generation portion generates calibration...
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7336705 |
Smart receiver for wireless peripherals
Systems and methods for evaluating a signal containing pulses received from a wireless computer peripheral device are provided. A received signal is analyzed to measure the strength of the received...
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7333775 |
Method for detection of radio communication terminals
A method detects which radio communication terminals use interference suppression procedures, in a radio communication system. Here radio communication terminals periodically return measurement...
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7315748 |
Method of informing uplink synchronization using downlink TPC bit patterns
A method of informing a terminal of uplink synchronization acquisition in a mobile communication system by using downlink transmit power control (TPC) bits. The base station modifies and transmits...
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7313366 |
Radio communications unit
There is described a radio communications system, including a unit which is able to communicate over a radio communications network such as a satellite or cellular system, and is also able to...
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7310503 |
Diversity reception device and diversity reception method
The circuit size of a diversity receiver for an orthogonal frequency division multiplexing signal is reduced, and the diversity effect is increased, by providing a power ratio comparator that...
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7308262 |
Controller and control method for mobile communication system
A controller in a wireless communication system for a mobile station simultaneously communicating with a plurality of base stations comprises a receiver receiving a plurality of signals, relating...
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7304969 |
Automatic gain control and low power start-of-packet detection for a wireless LAN receiver
A digital AGC system for burst operation, particularly suited for receiving packets in a wireless local area network. One embodiment includes a log detector that provides a signal strength measure,...
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7302276 |
Method and system for determining uplink/downlink path-loss difference
Methods and apparatus are described for estimating a path-loss difference between uplink and downlink communications at a first node communicating with a second node in a communication system. A...
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7302244 |
Antenna diversity receiver
An antenna diversity receiver comprises a zero-IF receiver connected to two antennas ( 102 a , 102 b ) via switches ( 532, 534 ). Simultaneous measurement of signal qualities from both antennas is...
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7269396 |
Method and device for suppressing multipath interference in a receiver for electromagnetic waves
A method and a device for a receiver for electromagnetic waves having at least two antennas are described; using this method and this device it is possible to effectively suppress multipath...
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7269395 |
Envelope detection circuit for low power communication systems
An envelope detection circuit includes a signal rectifier, first and second capacitors, and first, second and third transistors. The signal rectifier includes an input port coupled to receive a...
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7257178 |
Base band circuit of receiver and low cut-off frequency control method
A base band circuit of a receiver and a low cut-off frequency control means can quickly converge transition state due to gain fluctuation with setting a low cut-off frequency of a high-pass filter...
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7251497 |
Signal-to-interference ratio estimation for CDMA
Calculating of signal-to-interference ratio (SIR) of a mobile device in a wireless communication system. A communication signal transmitted by the mobile device is non-coherently processed....
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7245893 |
Method and system for noise floor calibration and receive signal strength detection
A system for detecting the level of the noise floor due to circuit noise as seen at the ADC for a wireless receiver. The system measures power after digitizing and filtering, and subtracts off any...
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7231186 |
Mobile station executing alarm processing of a degraded communication quality
A mobile station includes a degradation detecting section for detecting a degraded communication quality, an electric field measurement section for measuring an intensity of an electric field, and...
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7224980 |
Radio system
A stationary device 20 sends a portable-device finding signal to a portable device 10 from a plurality of stationary-device side antennae 24 and 25 , which are located at different...
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7212832 |
Communication system switching method, and terminal device using this method
A W-LAN communication unit, a personal handyphone communication unit and an EV-DO communication unit include communication functions corresponding to their communication systems. A W-LAN quality...
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7209722 |
Method of measuring receiver sensitivity, and transceiver
A method of measuring sensitivity of the receiving end in a transceiver that includes a transmission path between the transmitting end and the receiving end and a switching mechanism for connecting...
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7203487 |
Pre-notification of potential connection loss in wireless local area network
Notification is provided to a user within a wireless local area network when there is an elevated likelihood of losing a wireless network connection.
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7200402 |
Method for handing off streaming media sessions between wireless base stations in a mobile streaming media system
A method for performing a soft-handoff in a mobile streaming media system, and a method for performing a hard-handoff in a mobile streaming media system are is disclosed. In the soft-handoff...
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7194280 |
Mobile station assisted forward link open loop power and rate control in a CDMA system
Establishment of a forward link traffic channel between one or more candidate base stations and a mobile station considers forward link quality such that the initial transmit power is set to a...
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7190980 |
Method and system for power control in wireless portable devices using wireless channel characteristics
A method controls the operation of devices which communicate over a wireless communications channel. The method includes determining a parameter of a received signal communicated over the wireless...
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7190967 |
Radio communication system, communication terminal, and method for transmitting burst signals
In a burst signal transmitting/receiving method with transmission availability control, a method is provided for transmitting each burst signal with the transmission unit length appropriate for the...
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7187914 |
Rectifiers and rectifying methods for use in telecommunications devices
A signal strength indicator circuit including a set of rectifiers. The set of rectifiers include an asymmetric switching pair of rectifiers that may be configured to provide an output signal that...
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7187905 |
Method and arrangement for improving the accuracy of positioning-related time measurements in radio system
The invention relates to a method and arrangement for improving the accuracy of time measurements related to positioning in a radio system. In the method, a test signal is generated; the test...
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7171179 |
Adjustment of a received signal strength indication module
A method for adjusting a received signal strength indication (RSSI) begins by obtaining a first RSSI value of a first signal, wherein the first signal has a known first power level. The method...
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7167692 |
High frequency peak detector and applications thereof
A high frequency peak detector includes an operational amplifier, a transistor, a capacitor, and an average to peak conversion module. A first inverting input of the operational amplifier receives...
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7167679 |
Display terminal
A display terminal and display method for a radio LAN system for receiving image data from an apparatus by radio communication and displaying an image based on the received image data on a display...
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7155230 |
Dynamic frequency selection and radar detection with a wireless LAN
A receiver in a wireless communication system detects a possibly interfering radar signal, and uses dynamic frequency selection to switch to a non-interfering channel. The power level and the...
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7155196 |
Intermediate frequency tuner
The present invention is a method and apparatus for optimizing performance of a transceiver selecting and processing an intermediate frequency free of significant interference, such as noise. A...
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7149486 |
Mobile communication system including scheduler and mobile communication terminal of the system
Each mobile communication terminal receives an evaluation function threshold value of each base station transmitted from the base station, and calculates the evaluation function value of each base...
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7142593 |
Method of and system for interference measurement
An evaluation of the interference situation of a transmission system is performed. If valid payload data is received, a counter for valid receptions is incremented and a signal power at which the...
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7136114 |
Television receiver with dynamically adjustable filtering
A television receiver includes a tuner stage, a selective filter stage connected to the tuner stage, and a intermediate-frequency stage connected to the selective filter stage. A...
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7133655 |
Amplifiers and amplifying methods for use in telecommunications devices
A signal strength indicator circuit that includes a first amplifier configured to receive a first input signal from a first mixer and a second input signal from a second mixer;. The circuit also...
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7130653 |
Power allocation of wireless transmission apparatus
The present invention relates to a wireless transmission apparatus. The wireless transmission apparatus is used for transmitting a RF signal by a selected power allocation to meet the requirement...
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7130601 |
Determination of received signal strength in a direct conversion receiver
Determination of a received signal strength indication in a direct conversion receiver begins by determining, at a given time, a 1 st value to be the larger of the in-phase component of the...
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7120410 |
LNA gain adjustment in an RF receiver to compensate for intermodulation interference
A Radio Frequency (RF) receiver includes a low noise amplifier (LNA) and a mixer coupled to the output of the LNA. The gain of the LNA is adjusted to maximize signal-to-noise ratio of the mixer and...
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7116948 |
High-speed signal power detection circuit
A signal power detector includes an input coupling circuit, a rectifying operational amplifier, a comparator, and a charge pump. The input coupling circuit is operably coupled to receive a signal...
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