Abstract: In a network employing code division multiplex access, a distortion compensation amplifying apparatus is provided which is capable of making quick response to carry out the distortion compensation with high accuracy even if the signal power to be inputted thereto varies rapidly. In this distortion compensation amplifying apparatus, the renewal of a distortion compensation coefficient in a renewing unit is complemented on the basis of a result of amplification in an amplifier with respect to a signal code-division-multiplexed in a pseudo-signal multiplexing unit.

Abstract: A direct conversion receiver includes a detector that provides a measure of bias offset that is caused by component mismatches in the direct conversion mixer, and a corrective network that reduces the bias offset based on this measure. The direct conversion mixer demodulates a radio-frequency (RF) input signal via mixing with a local-oscillator (LO) signal to provide a differential baseband output signal. A differential peak detector compares the peak signal value at each side of the mixer's differential output, and a differential integrator averages the difference between these peak signal values to provide the measure of bias offset. The corrective network adds a correction offset to each of the local oscillator local oscillator paths on each of the switching pairs that provide the differential output, but opposite to the local oscillator connections.

Abstract: Apparatus and methods for estimating the frequency of a sleep or slow clock using a fast clock, such as a temperature compensated crystal oscillator. The disclosed apparatus include an estimator having a first counter that receives sleep clock synchronized pulses issuing each cycle of the sleep clock period, yet are synchronized to a fast clock. The slow clock synchronized pulses are counted up to a predetermined number; whereupon a full count signal is issued. A second counter receives the full count signal and increments each time the full count signal is received. A third counter counts fast clock cycles until the full count signal occurs. Based on the number of counts of the slow and fast clock cycles, the frequency of the slow clock may be determined using only the domain of the fast clock for performing the measurement thereby tying accuracy of the measurement to the accuracy of the fast clock.

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: An N×M crosspoint switch allows a signal from any one of the N inputs to be routed to one or more of the M crosspoint switch outputs. The switches within the crosspoint switch can be configured as voltage mode or current mode switches. In voltage mode switching an input to the crosspoint switch is provided to an input device, such as an amplifier, having a low output impedance. The output of the low impedance device is provided to a switch that connects the output of the low impedance device to a high input impedance device, such as a band translation device. In current mode switching, the low impedance output of the input device is connected to selectively activated high isolation transconductance devices having high input impedances. The outputs of the transconductance devices are connected to low impedance devices that operate as summing nodes.

Abstract: A method for continuously determining the required dynamic range for an analog-to-digital converter by determining the received signal strength and using this received signal strength value in combination with the overall dynamic range for the ADC and the target resolution of the ADC to decode a radio channel in the absence of interference, wherein the target resolution is also related to the type of decoding to be performed subsequent to analog-to-digital conversion. The method allows for a reduction in power consumption associated with the ADC, especially when the incoming signal is received with few interfering radio channels and with a relatively high signal strength. The present method can be combined with gain control and analog alert detection.

Abstract: A radio interface connects a mobile terminal device to a radio network. The mobile terminal device also has a communication interface for coupling to an external computer device, such as a notebook. The communication interface serves to provide real-time transmission of communication data or communication signals between the computer device and an input/output device of the mobile terminal device.

Abstract: A folder type mobile terminal which prevents damage to a display, such as a liquid crystal display (LCD), mounted in the folder due to an external impact is provided. An impact dispersing device incorporated into the upper and lower covers of the folder portion of the mobile terminal causes a load applied to the upper cover due to an external impact, such as that which is applied when the mobile terminal is dropped, to be dispersed to the lower cover. In this manner, the force of the impact is drawn away from the upper cover, adequate clearance is maintained between the upper cover and the display, and damage to the display is minimized.

Abstract: A method, information processing system and computer readable medium for emulating a mobile device on a computer is disclosed. The method includes storing an emulator program on the computer, wherein the emulator program imitates the functions and display of the mobile device. The method further includes establishing a connection between the mobile device and the computer and executing the emulator program on the computer, wherein an interface of the computer serves to interface with the emulator program. The method further includes synchronizing the emulator program and the mobile device such that the emulator program imitates in real time the functions and display of the mobile device. The method further allows the user to control and interact with the mobile devices from a centralized console on another device, such as a personal computer.

Abstract: A method comprising receiving a plurality of data packets each associated with one of a plurality of carriers, deriving an input bit stream indicative of the receipt of the plurality of data packets, utilizing an output block code to convert the input bit stream into an output bit stream, and transmitting the output bit stream to at least one of the plurality of carriers.

Abstract: A method of providing a telephony service can include creating a database of subscriber identities and subscriber voice prints and telephony services associated with the subscriber identities and receiving a spoken utterance from a subscriber. A subscriber identity can be determined according to voice print identification of the spoken utterance and a telephony service associated with the subscriber can be activated according to the determined subscriber identity.

Abstract: The present invention provides a system and method for RF gain control that extracts the background noise information of the received RF signal in the short inter-frame space (SIFS), and computes the background noise information and strength information of the received RF signal to output a feedback control signal to adjust the gain of the RF signal receiver. It optimizes the receiving system and makes the received RF signal be of sufficient strength and have a good quality as well.

Abstract: An embodiment of the present invention provides a method of pre-allocating and communicating IP address information during wireless communication by an access point, comprising pre-caching by said AP a predetermined number of IP addresses from a backend Dynamic Host Configuration Protocol (DHCP) server. An embodiment may further comprise providing by said AP an IP subnet roaming information element that provides the IP Address that a wireless station (STA) will be obtaining if a wireless station (STA) roams to a particular AP and providing by said AP an IP subnet roaming information element that provides an IP subnet mask that determines the network address and host address portion of the IP addresses and providing by said AP provides an IP subnet roaming information element that provides that provides a Default gateway router address.

Abstract: Integrated multiple tuner architectures and associated methods are disclosed that utilize frequency isolated local oscillators (LO). These architectures utilize dividers and multipliers within the signal paths for the local oscillator mixing signals to reduce interference among the multiple local oscillators operating on a single integrated circuit. A multiple tuner direct-down-conversion (DDC) receiver and a multiple tuner intermediate frequency (IF) receiver are provided as example embodiments. And an example integrated multi-tuner satellite receiver is also described.

Abstract: A low-cost diversity receiver includes two receiver units for a primary path and a secondary/diversity path. The first receiver unit is compliant with, for example, IS-98D requirements. The second receiver unit is not fully compliant with the IS-98D requirements (e.g., may meet requirements for sensitivity but not for out-of-band rejection). The second receiver unit is wideband and designed with lower power consumption, less area, and lower cost than the first receiver unit. For a multi-antenna receiver, the two receiver units are used to simultaneously process two received signals from two antennas. For a single-antenna receiver, one of the two receiver units is used to process a received signal from one antenna. For a dual-band design, each receiver unit can operate at two frequency bands. Narrowband circuit blocks are used for the first receiver unit, and wideband circuit blocks are used for the second receiver unit.

Abstract: A notification method for informing a UE of an existence or absence of control information for an MBMS in a mobile communication system supporting the MBMS. In the method, the UE receives a notification indicator channel independently reporting the existence of the control information for the MBMS, confirms at least one notification indicator of the notification indicator channel, thereby confirming the existence of the control information relating to the requested MBMS. Further, a method is proposed, which can minimize an alarm due to other MBMSs.

Abstract: An intermediate frequency circuit includes an intermediate frequency tuning circuit which resonates parallel to an intermediate frequency signal, a N?1 channel trap circuit connected to the output of the intermediate frequency tuning circuit, for removing voice signal components of lower neighboring channels, an intermediate frequency amplifier connected to the output of the N?1 channel trap circuit, for amplifying the intermediate frequency signal, and an intermediate frequency signal resonance circuit connected to the output of the intermediate frequency amplifier, wherein all the components are formed on a circuit board. In this case, the coupling state of the components connected between the input and output of the intermediate frequency amplifier on the circuit board is selected, and a picture portion in a frequency characteristic of the intermediate frequency circuit is set to a peak.

Abstract: A system for controlling the true output power of a transmitter includes a voltage detector in communication with a power amplifier for detecting an output voltage of the power amplifier and generating a voltage signal proportional to the output voltage. A current detector in communication with the power amplifier detects an output current of the power amplifier and generates a current signal proportional to the output current. A power detector in communication with the voltage and current detectors detects a true output power delivered by the power amplifier. The power detector includes a multiplier for multiplying the current signal and the voltage signal to generate a power signal proportional to the true output power. A power controller in communication with the power detector and the power amplifier controls the power amplifier to regulate the true output power based on the power signal.

Abstract: The present invention relates to a satellite signal transmitter, and in particular, to a satellite signal transmitter with a dual-input DC power control switch.

Abstract: A demodulator demodulates a received signal. A decoder performs inverse-spread spectrum processing on a demodulated signal. The decoder calculates a CIR value and outputs it to a CPU and a predictor. The predictor derives a next CIR value of the next reception time slot from the CIR value. The next CIR value is converted into a DRC with using a CIR-DRC conversion table. The CPU processes reception data internally or supplies those data to an externally connected PC via an external IF unit. The CPU determines, on the basis of the CIR value, a communication quality index of which to inform a user, and causes a display unit to display the index by an antenna mark. The index is supplied to the external PC via the external IF unit. Therefore, the user can recognize the communication quality by referencing to the index which indicates variation of the radio environment.