Abstract: A radio frequency receiver for receiving supplementary data transmitted with a radio station signal. The supplementary data includes one or more information word fields containing supplementary data transmitted with the radio station signal. The receiver includes a host processor for processing the supplementary data; a supplementary data demodulator and decoder for demodulating and decoding a received radio signal to generate a stream of bits representing one or more information word fields; an information word type memory for storing one or more information word type fields; detection circuitry arranged to receive and compare the information word type field decoded by the supplementary data decoder with one or more information word type fields stored in the information word type memory, and to provide a matched condition signal in response to a match between one or more decoded information word type fields and one or more of the corresponding stored information word types fields.

Abstract: An earphone antenna includes an earphone cable having first signal lines; a shielded cable including a coaxial cable, a second signal line for audio signals and a grounding wire, the coaxial cable having a central conductor passing high frequency signals surrounded by an insulator and further surrounded by a first shield wire, the coaxial cable, the second signal line, and the grounding wire collectively being surrounded by a second shield wire; a multipin connector arranged on one end of the shielded cable an adapted to electrically connect the shielded cable to a radio apparatus; and a connection block interconnecting the other end of the shielded cable and the earphone cable.

Abstract: The mobile communication apparatus informs occurrence of a missed event with a vibrator 54 in response to the detection of a second state that a case separates from the other case in the apparatus. For example, the missed event can be that the apparatus has a missing incoming call, that the apparatus has an unread message, or that a missed alarm time in the apparatus has already past. Further, the apparatus informs the occurrences without recognizing the LCD 42.

Abstract: The invention relates to a method and system for performing packet switched handover in a mobile communication network. The system comprises a mobile node, a first and a second packet switching node. The method enables the parallel sending of logical link layer frames from the first and the second packet switching node. This is achieved so that the mobile node does not reject incoming frames received from two logical link layer entities having different states. The benefits of the invention are related to improved quality of service and the avoiding of gaps in received data during handover.

Abstract: A mobile device with a manually operated power source which generates power sufficient to operate the device when shaken by a user. A cable connected between the power source and mobile device carries the generated power from the power source to the mobile device such that the mobile device can be powered. The cable has a length sufficient to enable a user to hold the mobile device in one hand and the power source in the other hand such that the mobile device can be held stationary and used while the power source is simultaneously shaken. The mobile device and power source are preferably arranged such that they can be mechanically coupled together to form a single unit.

Abstract: In a reception diversity system, a wireless apparatus includes an RF unit, analog signal processing unit, digital signal processing unit, and a control unit which controls the RF unit. The control unit operates only a predetermined system of systems while stopping the remaining systems for at least each intermittent operation period in intermittent reception operation of the RF unit, and stops all the systems in an intermittent stop period in the intermittent reception operation. The digital signal processing unit sets, in the RF unit, an initial reception gain estimated from an arbitrary past reception gain used in a past intermittent operation period as a first reception gain in a new system which is operated in accordance with arrival of a next intermittent operation period, thereby performing switching control of a plurality of systems which respectively demodulate received radio waves, and obtaining desired reception data. A control method for a reception diversity system is also disclosed.

Abstract: A tracking generator for an RF measurement instrument having a receiver and a controller includes a vector modulator internal to the tracking generator. The internal vector modulator modulates complex baseband signals based on data from the controller to produce a vector modulation signal. The vector modulation signal is used to modulate a local oscillator frequency from the receiver in an output mixing stage to produce a test signal having an output frequency that matches a measurement frequency to which the receiver is tuned. By controlling the complex baseband data from the controller, an adaptive filter at the output of a DAC that produces an analog signal from the digitally modulated complex baseband data, an internal independent oscillator for the vector modulator, or a large offset phase-locked loop, an offset from the measurement frequency may be generated for the output frequency.

Abstract: Various embodiments are described herein to address the need for providing substantially reduced PTT call setup delays. Modifications to channel assignment request messaging (400), such as an IS-2000 Reconnect Message and an IS-2000 Origination Message, are described. In addition, the use of common control channel signaling (e.g., 201), changes to page response messaging (e.g., 301) and new uses for A9-Short Data Delivery messaging (e.g., 203 and 303) are described. Embodiments incorporating some or all of these protocol changes, can provide reduced end-to-end call setup time for PTT as it presently exists in IS-2000 systems.

Abstract: A unique ultra wide band receiver is provided that blends together RF and photonic technologies. The receiver has application as a steering mechanism (600) for a much higher resolution receiver. Some implementations can provide at least four times shorter scanning and processing time than current technology using Bragg-cell technology as a direct replacement for state of the art A/D technology at a high IF frequency conversion rate. The dynamic range offered through use of Bragg-cell processor technology, as used in this IF application, provides greater bandwidth than comparable A/D technology.

Abstract: Crest factor reduction in a multiband transmitter is described. Component signals (xi[n]) are respectively obtained from constituent signals. The component signals (xi[n]) are respectively associated with sub-bands. A superposed signal associated with the component signals (xi[n]) is clipped to obtain a clipping noise error signal. The clipping noise error signal is applied to the component signals (xi[n]) using a least squares estimation to project clipping noise error onto the sub-bands.

Abstract: A wireless communication terminal adaptively controls a forward data rate based on a channel status and with regard to a delay time existing between the detecting of the channel status and transmitting the data. An adaptive data rate control (DRC) method includes steps of receiving a pilot signal from a base station; detecting a channel status by measuring a power level of the received pilot signal; calculating a delay time, the delay time equaling a time interval indicative a pilot signal and reception of a data signal; determining a target forward data rate based on an offset value corresponding to the delay time; and transmitting a value indicative of the target forward data rate to the base station. The forward data rate is requested in consideration of the delay time.

Abstract: A second single-ended receiver having a first stage for receiving an input signal and outputting a pair of corresponding output signals, and a second stage for receiving the pair of output signals and outputting a corresponding single output signal. First and second pull-down transistors are coupled to first and second inputs to the first stage. A bias circuit electrically biases the first stage, second stage, and first and second pull-down transistors, and a power supply provides power to those components.

Abstract: A positioning system includes the ability to receive GPS signals and to receive and transmit packet radio signals. The positioning system receives GPS transmissions to determine its pseudo position. The positioning system also receives differential corrections relative to its pseudo position using packet radio. By combining the GPS transmissions and the differential corrections, the positioning system calculates its actual position. A user has the ability to obtain information relevant to their actual position by transmitting a request to a reference station, using packet radio. The reference station maintains an information system and will transmit the requested information back to the user. The information system includes a data storage memory and retrieval system and a direct link to the internet. The user is able to provide information for storage within the information system or on the internet in order to compile the information available from the reference station.

Abstract: The present invention relates to a method and a communication system wherein stations communicate on a wireless interface. The method includes the steps of including beam identity information into signals transmitted on multiple beams provided by a first station, receiving at a second station signals transmitted from the first station, and identifying beams via which the second station received signals from the first station based on said identity information. At least one beam for transmission on the wireless interface between the stations is then selected. A station configured for the communication comprises antenna means for receiving signals transmitted from the other station on multiple beams and a controller for identifying beams based on beam identity information associated with signals received from the other station.

Abstract: Disclosed is a digital signal processing apparatus of a communication terminal for adaptably transmitting voice data to allotted uplink channels and a voice data transmission method thereof. The digital signal processing apparatus comprises a plurality of speech coders for compressing the sampled voice data with each compression rate predetermined according to the number of packet channels capable of being allotted, a plurality of channel coders for channel-coding each set of voice data, compressed by each speech coder, according to respective predetermined codes, and a switching section, for outputting voice data which are compressed and channel-coded corresponding to the number of the allotted packet channels when packet channels are allotted.

Abstract: A system of distributing electronic content has a network operations center generating a broadcast signal having digital electronic content. A communication backbone is coupled to the network operations center. A base station receives the broadcast signal from the backbone. The base station receives the broadcast signal and forms a wireless local area network. The base station rebroadcasts at least a portion of the broadcast signal as a rebroadcast signal using the wireless local network. A user appliance is positioned with said local area network and receives the rebroadcast signal.

Abstract: Rejection of local oscillator harmonic response is provided in a mixing circuit with a pair of harmonic gating switches serially connected to the outputs of a balanced differential switching mixer and controlled by a gate clock signal having twice the frequency of a local oscillator signal controlling the switching mixer. An aperture or duty cycle of the gate clock signal determines which harmonic is rejected or suppressed, which is preferably a third and/or fifth harmonic since response of the balanced differential switching mixer to even harmonics is negligible. The resulting simple, efficient circuit is readily integrated directly into a phase-alternating mixer structure for a chopper-direct-conversion radio.

Abstract: In a wireless communication system, an apparatus and method for managing an uplink communication between a network and a plurality of terminals is achieved by transmitting a response condition parameter from the network to the plurality of terminals subscribing to a multicast service. The parameter is associated controlling the uplink communication of the plurality of terminals. The terminal then applies the response control parameter to a predetermined test and responds to the network if the terminal determines that it is qualified to respond to the network in response to a result of the predetermined test. The network evaluates whether the parameter needs to be transmitted to the plurality of terminals and whether the parameter needs to be updated based on at least part of responses received by the network.

Abstract: A header detection technique for WLAN (Wireless Local Area Network) receivers is provided. The WLAN receiver comprises a signal processing unit that has analog circuitry and digital circuitry. There is further provided a header detection circuit for detecting a header in a received signal. The header detection circuit is comprised in the analog circuitry. In an embodiment, digital circuitry may be woken up based on a header detect signal that is generated by the header detection circuit. The embodiments may reduce the power consumption of the receiver, and the false detection rate.

Abstract: When an off-hook key is pressed in the power-off state, a power control unit applies power to circuits including a radio communication unit. When a camera mode startup power on/off key (manner key in the phone mode) provided on the side of the body is pressed in the power-off state, the power control unit applies power from a power supply to each circuit except the radio communication unit, whereby the signal-off mode is set and an imaging device, DSP and subdisplay unit are activated. After that, when a shutter key (memo key in the phone mode) is pressed, an image at that time is captured and stored into a RAM.