Abstract: Provided is a method for selecting a receiver mode of a mobile terminal having two receivers and that can receive a signal using either or both of the two receivers depending on a channel environment. A method for selecting a receiver mode of a wireless communication terminal having at least two receivers includes computing at least one parameter for determining the receiver mode from a received signal; comparing the at least one parameter with a preset threshold; and selecting one only of a single receiver mode in which either of the two receivers is activated and a dual receiver mode in which both of the receivers are activated according to the comparison result. The method enables a receiver mode to switch between single and dual receiver modes adaptively according to a wireless environment, thus achieving stable signal reception without compromising reception sensitivity.

Abstract: In communications between a pair of stations using modulated carrier signals, a first station estimates the carrier frequency offset with respect to the second station and transmits signals that are responsive to the estimated carrier frequency offset. The first station may adjust the carrier frequency of the signals it transmits in response to the estimated carrier frequency offset, and/or transmit data to the second station representing the estimated carrier frequency offset. The second station adjusts the carrier frequency of the signals it transmits to the first station, and/or compensates for carrier frequency offset in its processing of received signals, in response to estimated carrier frequency offset data received from the first station.

Abstract: A semi-automatic swing device for a swing-type portable terminal. The semi-automatic swing device includes a first member; a second member for semi-automatically performing first and second swing operations along a desired trajectory on the first member, while facing the first member; guide means having a first guide portion formed in the first member and a second guide portion spaced apart from the first guide portion, for determining a direction of the swing operations; a driving source installed in the first guide portion, for allowing the second member to semi-automatically perform the swing operations; and first and second coupling members mounted on the second member and coupled with the first and second guide portions, respectively, the first and second coupling members moving along the first and second guide members and restricting the first and second members while the first and second members face each other.

Abstract: A method of generating a data block including control information in a specific layer of a mobile communication apparatus having a hierarchical structure constructed with a plurality of layers is disclosed. The present invention includes the steps of inserting a control data block including control information into a first region of a lower layer data block if the lower layer has the control information to be transmitted to a receiving side and inserting at least one portion of the data block of an upper layer into a second region of the lower layer data block, wherein the first region is allocated to the control data block before the second region is allocated to the at least one portion of the upper layer data block.

Abstract: On-chip MOS circuitry couples a communication path between an output stage amplifier and an output port and disables a circuit path between an input amplifier and the output port by creating a high impedance circuit during transmit operations. Alternatively, the circuitry opens the transmit circuit path with an isolated MOSFET and enables the second circuit path by creating an impedance matched circuit. The switch is formed within an isolated region to allow it to float with a signal to avoid breakdown. This floating MOS switch can be used for a variety of other applications in addition to its use as a transmit/receive switch even though formed on the same die as the communication circuitry.

Abstract: The disclosed system, device and method for a signal modulation apparatus generally includes a first signal generator suitably configured to generate a first continuous wave radio frequency (RF) signal, and a second signal generator suitably configured to generate a second continuous wave RF signal. A dual-circular polarized antenna may be adapted to receive the first continuous wave RF signal into a right-hand port and the second continuous wave RF signal into a left-hand port, where the signals are combined into a modulated RF signal in the dual-circular polarized antenna.

Abstract: Aspects of a method and system for signal processing are disclosed and may include receiving a plurality of wireless signals via a plurality of M receive antennas. Each of M phase shifters coupled to each of the M receive antennas may be set to operate in a bypass mode or with an arbitrary phase setting. Corresponding signal strengths of M signals generated when each of the M phase-shifters is coupled to each of the M receive antennas may be measured, while at least a portion of the M receive antennas are turned off. Selecting one of the M generated signals for processing without the use of an antenna switch, based on the measured signal strength. A signal strength of each of the generated M amplified signals may be measured while turning off at least one of the plurality of M receive antennas and without the use of the phase-shifters.

Abstract: Provided a self-biased receiver system using a multi-fed antenna, including: at least one first port connected to an electronic circuit; and a second port connected to a feeder forming a DC (direct current) voltage using an input electromagnetic wave and feeding the DC voltage to the electronic circuit.

Abstract: A system for providing automatic gain control (AGC) comprises a signal path with an RF input, a plurality of power detectors in communication with the signal path, each of the power detectors operable to measure a total broadband power level of a signal in the signal path, each of the power detectors positioned to monitor a point in the signal path corresponding to a change in signal bandwidth, a control system operable to receive from each of the power detectors information associated with the power level and to adjust attenuation in the signal path in response to the information to achieve desired gain control.

Abstract: A radio frequency circuit apparatus and a radio frequency module which permit alleviation of the PA efficiency drop and are compatible with both a MIMO system and a conventional system are to be provided. They are provided with a plurality of power amplifiers for amplifying a transmit signal and the plurality of power amplifiers include at least two power amplifiers differing in maximum output power from each other, and at least one out of the plurality of power amplifiers is used according to the communication system.

Abstract: Disclosed is a headset which includes a radio communication unit and control unit. The radio communication unit has 2 communication mode. The first mode is used for communication with an access point connected to a fixed network. The second mode is used for communication with a specific portable communication terminal. The communication control unit judges whether the headset can communicate with the access point. The communication control unit selects either one of said first and said second mode based on the judgment result. When the first mode is selected, the communication control unit connects the headset to the fixed network with the telephone number of the specific portable communication terminal as a telephone number of the call originating party.

Abstract: A mobile terminal having acoustic transducers and method for using the same are provided. The acoustic transducers are detachably mounted in a terminal body. When the acoustic transducers are mounted in the terminal body, they are operated as speakers, and when the acoustic transducers are separated from the terminal body, the acoustic transducers are operated as at least one of a wireless earphone and the microphone.

Abstract: Disclosed herein is a method for generating a test signal for testing the accuracy of the CINR measurement of a subscriber station. The method includes step (a) of checking a preamble code corresponding to a predetermined cell ID, reading corresponding preamble data from a preamble code table, and taking it as desired preamble data, step (b) of completing generation of desired signal data by generating desired pilot data and various information data, step (c) of randomly selecting one preamble code from among preamble codes corresponding to cell IDs other than the cell ID, reading corresponding preamble data from the preamble code table, and taking the preamble data as interference preamble data, step (d) of generating interference pilot data, and step (e) of generating test signal data by adding the interference preamble data and the interference pilot data to the desired signal data.

Abstract: Method and apparatus to dynamically configure the signal reception selectivity of a plurality of transceivers is described. In one embodiment, a transceiver includes a receiver circuit having two or more filter circuits. Each of the filter circuits is configured to pass RF signals from a different portion of an overall receiver bandwidth. When two or more receivers in proximity to one another are simultaneously operating, the filter circuits of the respective receiver are dynamically configured to different RF frequency passbands to minimize interference and cross talk between receivers and transmitters.

Abstract: According to one aspect of the invention, a method for determining a power control set point is provided. In one embodiment, the power control set point is determined based on one or more factors including a first factor corresponding to a pilot bit error rate, a second factor corresponding to a normalized signal variance, and a third factor corresponding to an average number of fingers in lock.

Abstract: An integrated circuit radio receiver includes radio frequency (“RF”) front end circuitry for receiving and transmitting digital data received through a wireless interface. A baseband processor is operable to process the digital data received through the wireless interface. A plurality of digital filtering logic is included wherein each digital filtering logic includes a level of digital filtering based upon a received digital data signal format. The integrated circuit radio receiver includes logic that is operable to select between each digital filtering logic of the plurality of digital filtering logic based upon the received digital data signal format to process the digital data received through the wireless interface with the selected level of digital filtering.

Abstract: The present invention relates to a semiconductor integrated circuit and a wireless communication apparatus that can be reduced in size without deteriorating a receiving sensitivity and a transmission efficiency. Communication with an external reader/writer and an external non-contact IC card is carried out through a common antenna 211. The signal received from the external reader/writer or the external non-contact IC card through the antenna is supplied to an ASK demodulation circuit 149 and demodulated. The signal received from the external reader/writer is full-wave rectified and smoothed by an full-wave rectification and smoothing circuit composed of diodes 231, 232 and a capacitor 233, and the power obtained from the full-wave rectified and smoothed signal is supplied to respective units of a semiconductor integrated circuit 101. The present invention can be applied to a mobile phone.

Abstract: A remote control system which can reliably provide desired control while saving power. A remote control apparatus is capable of carrying out two-way wireless communication with an apparatus to be controlled. A control signal corresponding to a key switch for remote control is repeatedly transmitted while the key switch is being operated. Repeated transmission of the control signal is inhibited in accordance with reception of a predetermined signal from the apparatus to be controlled.

Abstract: The invention provides a method, system and devices for providing a connection of a terminal to at least two networks for providing services to the terminal. The terminal establishes only one logical connection to a support node of a network for communication between the terminal and the network. The logical connection is used for providing services to the terminal from the at least two networks. A network visited by the terminal provides visited services in addition to home services provided to the terminal from a home network of the terminal, the services being provided in parallel.

Abstract: A communication device may include one or more circuits in an integrated transmitter and receiver that includes a transmit path and a receive path. The transmit path may include an I processing baseband transmit path and a Q processing baseband transmit path. The receive path may include an I processing baseband receive path and a Q processing baseband receive path. The one or more circuits may enable sharing a first common filter by the I processing baseband transmit path and the I processing baseband receive path. The one or more circuits may also enable sharing a second common filter by the Q processing baseband transmit path and the Q processing baseband receive path. The first common filter and the second common filter are independently programmable to adjust a phase and/or a gain of the said first common filter, and/or a phase and/or a gain of the second common filter.