Abstract: Method for user-aided communication evaluation and performance and for producing a quality report regarding a communication connection entails signaling of a services provider by a first endpoint user in real-time entails establishing a first communication link between the first endpoint user and a second endpoint user. A second communication link between the first end point user and the services provider is determined. The methods continue by analyzing of the first and second communication links for quality by the services provider and generating statistics based on the analysis for quality in the connection. The methods can conclude by producing a quality report using those statistics. The quality report can initiate an immediate response in real-time or can be stored for a later response.

Abstract: Provided is a poly-phase filter capable of removing an image frequency of a terrestrial digital multimedia broadcasting (T-DMB) receiver in a low intermediate frequency (IF) structure applied to a mobile communication terminal and a receiver having the poly-phase filter. The poly-phase filter includes: a calibration control block for generating first and second filter characteristic control signals which determine electrical characteristics of the filter in response to a control signal including instructions for changing the characteristics of the poly-phase filter and holding the changed values; and a poly-phase filter block for performing filtering on a plurality of input signals having different phases from each other in response to the first and second filter characteristic control signals. Accordingly, the poly-phase filter has advantages of having constant electrical characteristics regardless of changes in a manufacturing process and temperature and a high-performance image rejection function.

Abstract: Integrated balun and coupler is described. In one example, a radio frequency (RF) device includes a balun and coupler. The balun includes a first winding and a second winding arranged on a magnetic core. Respective inputs of the first winding and the second winding are configured to receive a balanced RF input and respective outputs of the first winding and the second winding are configured to provide a first unbalanced RF output. The coupler includes a third winding arranged on the magnetic core. The third winding is configured to provide a second unbalanced RF output, where the second unbalanced RF output is a fraction of the first unbalanced RF output.

Abstract: A method of estimating a location of a wireless device providing a wireless attack. The method includes disposing a number of sniffers in a geographic region and receiving a number of wireless signals at one or more of the number of sniffers. The method also includes processing the number of wireless signals to identify a subset of the number of wireless signals that are associated with the wireless device and determining a number of received signal strengths associated with the subset of the number of wireless signals. The method further includes providing an estimation of the location of the wireless device utilizing the determined received signal strengths associated with the subset of the number of wireless signals.

Abstract: To provide an antenna device adapted to interrupt jamming waves and enable cost reduction, a high-pass filter (HPF) adapted to interrupt general-use frequencies at least near a low-frequency side of a pass band intended for use is provided as a frequency selection circuit 11A on the antenna 1 side in an initial-stage LNA 2A. By setting a low-side cutoff frequency to 900 MHz, it is possible to prevent reception of frequencies in a general-use frequency band with a high frequency of use as jamming waves. That is, for example, it is possible to prevent reception of frequencies in 800 to 900 MHz band for mobile cellular telephones and higher harmonics thereof as jamming waves. Further, since an additional filter is not required in the antenna device, the circuit structure can be simplified.

Abstract: An antenna damping circuit in which the frequency characteristics of damping amount can be made substantially flat by providing a resistor (Ra) between PIN diodes (D1, D2) having a resistance varying upon application of a control voltage (Vc) and a capacitive dummy antenna circuit (10), and setting its resistance high enough to neglect the capacity of the dummy antenna circuit (10) sufficiently when the dummy antenna circuit (10) is viewed from the side of the PIN diodes (D1, D2) thereby substantially eliminating the influence of capacity of the dummy antenna circuit (10).

Abstract: An apparatus and method of saving power using location information, which can control power consumption of a mobile terminal in a sparse cell environment is provided. The power saving apparatus using location information comprises a transceiver for receiving a location information set from a base station having the stored location information set, a controller for receiving the location information set from the transceiver, and activating any one of a plurality of modes by using the location information set, where each of the plurality of modes utilizes a different power consumption level.

Abstract: A modulator 23 corrects an amplitude signal Rd by adding thereto an offset value ? and generates, based on the corrected amplitude signal Rd, an amplitude signal Ra for amplitude-modulating a radio-frequency signal. The modulator 23 includes: an offset voltage measurement section 109 operable to measure an offset voltage V2cal of the amplitude signal Ra; a correction value calculation section 110 operable to obtain a difference value ?V2cal between the offset voltage V2cal measured by the offset voltage measurement section 109 and an initial value of the offset voltage V2cal and operable to calculate, based on the difference value ?V2cal, a correction value VODAC for correcting the offset voltage V2cal; and an addition section 106 operable to add the correction value VODAC calculated by the correction value calculation section 110 to a signal processed until the amplitude signal Ra is generated from the amplitude signal Rd.

Abstract: Methods and systems for vector combining power amplification are disclosed herein. In one embodiment, a plurality of signals are individually amplified, then summed to form a desired time-varying complex envelope signal. Phase and/or frequency characteristics of one or more of the signals are controlled to provide the desired phase, frequency, and/or amplitude characteristics of the desired time-varying complex envelope signal. In another embodiment, a time-varying complex envelope signal is decomposed into a plurality of constant envelope constituent signals. The constituent signals are amplified equally or substantially equally, and then summed to construct an amplified version of the original time-varying envelope signal. Embodiments also perform frequency up-conversion.

Abstract: Various embodiments are described for a trained data transmission for communication systems.

Abstract: In one embodiment, a method is provided for providing power to a radio-frequency (RF) component capable of operating under multiple communication standards, wherein each standard has a respective operating frequency.

Abstract: A plurality of operation portions are arranged at a surface on a sub-display side of a cellular phone with a camera so that various kinds of setting, selection and control can be performed without opening the cellular phone in its folded state, and the cellular phone can achieve improved operability and convenience. Cellular phone includes a first display portion at a surface of a first body opposed to a second body in the folded state, and includes a second display portion, an image taking portion and a plurality of operation portions arranged at a rear surface of the first body remote from the first display portion.

Abstract: A method and system for reducing interference in a cellular radio communications network. At least one parameter affecting user terminals within a cell is adjusted such that the cell boundary is modified, such that interference in the network is reduced. In alternative embodiments the at least one parameter is adjusted adaptively.

Abstract: According to one exemplary embodiment, a switching device with phase selection terminals to select between at least two phase shifting modes to reduce intermodulation distortion in the switching device includes a first phase selection terminal to select a first phase shifting mode of the switching device by enabling a first phase shifter in a first phase shifting switching branch coupled to an input of the switching device. The switching device further includes a second phase selection terminal to select a second phase shifting mode of the switching device by enabling a second phase shifting switching branch coupled to the switching device input. The intermodulation distortion in the switching device is reduced by selecting one of the first and second phase shifting modes. The switching device may further include a number of FETs coupled in series between an output of the switching device and the first and second phase shifting switching branches.

Abstract: A method and system for reducing interference in a cellular radio communications network. At least one parameter affecting user terminals within a cell is adjusted such that the cell boundary is modified, such that interference in the network is reduced. In alternative embodiments the at least one parameter is adjusted adaptively.

Abstract: The present invention is a receiving circuit used for a cellular phone that is reduced in size and can realize low power consumption. In a signal reception circuit that is used in a cellular phone that perform transmission and reception of a plurality of band wireless signals and includes a low-pass filter for removing blockers unnecessary for signal reception, the low-pass filter 104 is composed of a plurality of filters composed of a plurality of different circuit configurations and having a plurality of different pole positions, switching between a filter for blocker removal and a filter configuration with reduced sensitivity degradation is performed by combining a plurality of filters for each signal reception band, and by performing power-off of an unnecessary filter portion in the filter configuration, power consumption is reduced.

Abstract: A digital phase locked loop (PLL) includes a digital phase detector, a digital loop filter, a digitally controlled oscillation module, and a variable feedback divider. The digital phase detector is coupled to produce a difference signal based on a phase difference between a reference oscillation and a feedback oscillation. The digital loop filter is coupled to process the difference signal to produce a control signal. The digitally controlled oscillation module is coupled to generate an output oscillation based on the control signal. The variable feedback divider is coupled to produce the feedback oscillation from the output oscillation based on a divider value and a controlled variable delay.

Abstract: A location visit detail service, typically provided by a wireless carrier to a subscriber, includes a portable wireless device, a location identification means and a central processor. The central processor periodically receives location data generated by the location identification means. The central processor data transforms the location data into time and position data pairs that identify the location of the portable wireless device at a particular time. Through a geographic information system database, the position data is converted to street address data. The details data is provided by the wireless carrier to the subscriber, which can use the details data to provide a summary report describing the activity of the service person. This summary report can be used for preparation of bills or for gathering statistics on (individual or group) service person efficiency. Alternatively, the wireless carrier can prepare the report that is then transmitted to the subscriber.

Abstract: A customer relationship management (CRM) method using IBOC-radio signals is provided. A message in the radio signal is parsed to obtain a key. The key is compared to a plurality of stored keys. When the received key matches a stored key, a data structure associated with the message is outputted. A device comprising a lookup table with a plurality of stored keys, a tuner unit that receives a CRM in an IBOC signal, and a controller in electrical communication with the lookup table and tuner is provided. The controller comprises (i) instructions for comparing a key in the CRM to one or more stored keys in the plurality of stored keys and (ii) instructions for permitting the display of a display text associated with the received key when there is a match between the received key and a key in the plurality of stored keys.

Abstract: Frequency pattern generator (1, 101, 201) for generating frequency pulses, said generator having a first local oscillator unit (2-1, 121, 221) for generating a first radio frequency carrier frequency signal (LO1), at least one second local oscillator unit (2-2, . . . 2-N, 122, 222) for generating at least one second radio frequency carrier frequency signal (LO2), a switching device (3, 103, 203) for passing on one of the radio frequency carrier frequency signals (LO1, LO2) or a zero signal (DC) in a manner dependent on a control signal (CTR), and a mixing stage (9, 109, 209, 212, 309) for mixing the signal (LO) that has been passed on by the switching device (3, 103, 203) with a mixing frequency signal (LF) to form a pulsed output signal (RFOUT), the pulsed output signal (RFOUT) having frequency pulses at a respective frequency (f1, . . . f8) and length (Tp) in a manner dependent on the control signal (CTR).