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| Number | Title | Issue Date |
| 7339978 | Adaptive weight update method and system for a discrete multitone spread spectrum communications system A new method makes the most efficient use of the scarce spectral bandwidth in a wireless discrete multitone spread spectrum communications system by updating the spectral and/or spatial spreading weights at a rate that is determined by the measured quality of the li... | 03/04/2008 |
| 7336693 | Communication system using ultra wideband signals A transmitter and receiver carry out ultra wideband communications. The transmitter includes a generator of a chip clock, a generator of a spreading code sequence of a fixed chip rate by using the chip clock, and a frequency converter of a carrier wave frequency, be... | 02/26/2008 |
| 7336694 | Delay-induced scattering with phase randomization and partitioned frequency hopping A first copy and a second copy of a signal, which comprises a plurality of TDMA frames, are transmitted from the same antenna. Relative to the first copy, the second copy of the signal has a fixed delay and a random phase. The random phase changes from one of the TD... | 02/26/2008 |
| 7334417 | Air conditioner and power line communication system An air conditioner and a power line communication system high in reliability and free of malfunction facilitates the installation work such as the wiring. The air conditioner for conducting communication through a power line includes a bridge unit connected to at le... | 02/26/2008 |
| 7336599 | Apparatus and method for joint detection receiving irrespective of orthogonal code length in mobile communication system A joint detection reception apparatus and method, which are utilized irrespective of a length of an orthogonal code in a TD-CDMA communication system. The joint detection reception method for creating a system matrix associated with a joint detection receiver in the... | 02/26/2008 |
| 7337321 | Digital content protection using invisible and visible watermarks A technique for distributing digital contents capable of effectively protecting copyrights and the like on the basis of invisible electronic watermark information and electronic watermark information is to be provided. On the sending side, additional information inc... | 02/26/2008 |
| 7336738 | Demodulation timing generation circuit and demodulation apparatus A demodulation timing generation circuit capable of generating correctly and with high precision a timing for demodulating a reception signal even under various kinds of reception conditions and a demodulation apparatus using the same, wherein AGC control and freque... | 02/26/2008 |
| 7336697 | Code division multiple access mobile communication system A code division multiple access (CDMA) mobile communication system with improvements to permit stable reception with a minimum of bit error. The system includes a base station and a mobile station for communicating with the base station. The mobile station includes ... | 02/26/2008 |
| 7336629 | Power control method and device A method and device for controlling a power used for transmitting data between a terminal device and a transceiver device, wherein the method comprises monitoring during predetermined time units the power used in a transmission between the terminal device and the tr... | 02/26/2008 |
| 7336732 | Carrier frequency detection for signal acquisition A carrier frequency in a filtered received M-ary phase-shift keyed (MPSK) modulated signal having in-phase and quadrature components is detected by processing the filtered received signal to remove modulation components and thereby generate a test signal at the carr... | 02/26/2008 |
| 7336110 | Differential amplitude controlled sawtooth generator A dual differential sawtooth signal generator includes a first sawtooth voltage generator that has a first capacitor and a second capacitor that are alternately charged with a feedback control source current from a low voltage reference voltage level. A second sawto... | 02/26/2008 |
| 7336127 | Doherty amplifier configuration for a collector controlled power amplifier An efficient power amplifier circuitry for a mobile terminal or similar wireless communication device is provided. The power amplifier circuitry includes an output stage configured as a collector controlled Doherty amplifier, wherein the collector controlled Doherty... | 02/26/2008 |
| 7334735 | Card for interaction with a computer A smart card comprising: a memory for storing information; at least one transmitting or receiving antenna; and a low frequency circuit, for handling information associated with said antenna and said memory, which information is modulated at a modulation frequency of... | 02/26/2008 |
| 7336219 | System and method for generating a radar detection threshold A method for generating a radar detection threshold includes computing a first plurality of percentile values associated with frequency domain values of frequency domain signals. The first plurality of percentile values is used to generate detection threshold values... | 02/26/2008 |
| 7336637 | CDMA communication device for improving the usability of frequencies and suppressing the occurrence of call loss The CDMA communication device of the present invention includes a spreading unit, radio transmitters, and a control device that includes a setting unit and a determination unit. The spreading unit spreads and multiplexes user data of users. The radio transmitters ar... | 02/26/2008 |
| 7333575 | Method and apparatus for receiving a CDMA signal A receiver, a system, and an associated method, for receiving a radio signal carrying transmitted data that is subject to distortion in the transmission channel. The receiver includes a plurality of stages that perform parallel interference cancellation (PIC) with r... | 02/19/2008 |
| 7333527 | EMI reduction using tunable delay lines The clock signal is the dominant source of electromagnetic interference (EMI) for many digital electronic devices. EMI generated by these electronic devices must be suppressed to avoid interference with other electronic devices and to satisfy FCC regulations. The pr... | 02/19/2008 |
| 7333528 | Multiuser DSSS-OFDM multiband for ultra wideband communications A multiuser direct sequence spread spectrum (DSSS) Orthogonal Frequency Division Multiplexing (OFDM) multiband of Ultra Wideband (UWB) communication system for short-distance wireless broadband communications is disclosed for indoor environment operations. Eleven fr... | 02/19/2008 |
| 7334149 | Clock distribution architecture with spread spectrum A redundant clock distribution system with spread spectrum. In one embodiment, a clock board includes a clock synthesizer configured to provide an input clock signal, and a spread spectrum unit coupled to receive the input clock signal. The spread spectrum unit is c... | 02/19/2008 |
| 7333529 | Apparatus and method for measurement of communication quality in CDMA system In order to perform synchronization detection with high speed, high precision and high reliability and to measure communication quality (propagation characteristics) at high precision and high efficiency, a mobile station (202) includes synchronization detect... | 02/19/2008 |
| 7333504 | Simultaneous serial transmission of messages with data field arbitration A communication system has a number of nodes connected to a serial data bus. Nodes communicate with each other by transmitting dominant and recessive bits during bit intervals as taught by the CAN (controller area network) arbitration protocol. According to the CAN ... | 02/19/2008 |
| 7333727 | Reconfigurable, multi-user communications network, with low latency time The invention concerns a reconfigurable, multi-user optical communications network, with low latency time. It comprises at least one transmitter generating from a digital data signal a brightness-modulated light signal, encoded with a pseudo-random code gener... | 02/19/2008 |
| 7333614 | System and method for encypting spread spectrum carrier A system and method for encrypting all channels of a wireless spread spectrum communication at the chip level. The PN sequence is encrypted with one or more encryption sequences and then used to spread the signal. ... | 02/19/2008 |
| 7333531 | Vertical adaptive antenna array for a discrete multitone spread spectrum communications system Two or more antenna elements are arranged in the vertical direction to give vertical spatial adaptivity to a wireless discrete multitone spread spectrum communications system. The system is based on a combination of Discrete Multitone Spread Spectrum (DMT-SS) and mu... | 02/19/2008 |
| 7330071 | High efficiency radio frequency power amplifier having an extended dynamic range A system and method are provided for efficiently amplifying a radio frequency signal. In general, the system includes power amplifier circuitry that efficiently amplifies an input signal under power back-off conditions. In one embodiment, the power amplifier circuit... | 02/12/2008 |
| 7330078 | Apparatus and method for limiting the overshoot and undershoot when turning on the spread spectrum of a reference signal Disclosed is a circuit, comprising an input spread spectrum enable signal, a crystal oscillator, a first, second and third sampling flip-flop clocked by the crystal oscillator, configured to sample the input spread spectrum enable signal, and a plurality of control ... | 02/12/2008 |
| 7330521 | Correlator and receiver including the same A correlator which can be adapted to a receiver for impulse radio includes a multiplier for multiplying a received impulse train by a received template train, an analog integrator for integrating the result of the multiplication, and a quantizer quantizing the resul... | 02/12/2008 |
| 7330504 | Method and apparatus for low power-rise power control using sliding-window-weighted QoS measurements A system and method for adjusting the power control target for a spread-spectrum communication system 110 is disclosed. A preferred embodiment comprises correcting a power control target 128 based upon the difference between a filtered series of actual... | 02/12/2008 |
| 7330729 | Mobile terminal device and positional information system A geomagnetic sensor for detecting geomagnetism is provided in a mobile terminal device. The output value of the geomagnetic sensor is compared with a first set value that has been set in advance, and the mobile terminal device is determined to be stationary when th... | 02/12/2008 |
| 7330497 | Wireless communication system using an impulse signal train, a wireless transmission apparatus, a wireless reception apparatus, a wireless transmission method, and a wireless reception method A wireless communication system performs high-speed and low-speed transmission of information signals for short-distance communication and long-distance communication by using a short spread code and a long spread code, respectively. A wireless transmission unit inc... | 02/12/2008 |
| 7330513 | Apparatus of transmitter and receiver for MIMO MC-CDMA system The invention relates to an apparatus of transmitter and receiver for Multiple Input/Multiple Output MultiCarrier-Code Division Multiple Access (MIMO MC-CDMA) systems. At the transmitter, modified orthogonal transmit diversity (MOTD) encoders are used for increasing... | 02/12/2008 |
| 7330446 | Closed-loop power control method for a code-division multiple-access cellular system Methods and apparatuses for a closed-loop power control in a code-division multiple-access communication system wherein both received signal quality and communication channel quality are used to determine appropriate transmitter power, and transmission may be suspen... | 02/12/2008 |
| 7330562 | Watermarking in the time-frequency domain Methods and systems for time-frequency domain watermarking of media signals, such as audio and video signals. An encoding method divides the media signal into segments, transforms each segment into a time-frequency representation, and computes a time-frequency domai... | 02/12/2008 |
| 7330496 | System and method for spread spectrum communication A spreading code generating apparatus carries out M-sequence multiplication and zero value addition of generated orthogonal codes to obtain channel identification codes, and then carries out inverse Fourier transform of the channel identification codes to generate s... | 02/12/2008 |
| 7328047 | Mobile wireless communications device with reduced interfering energy from the display and related methods A mobile wireless communications device includes a housing and circuit board carried by the housing and includes radio frequency (RF) circuitry and a processor carried by the circuit board and operative with each other. A display connector for an LCD connector is mo... | 02/05/2008 |
| 7327992 | Tracking generator with internal vector modulation source 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 v... | 02/05/2008 |
| 7328332 | Branch prediction and other processor improvements using FIFO for bypassing certain processor pipeline stages A processor (1700) including a pipeline (1710, 1740) having a fetch pipeline (1710) with branch prediction circuitry (1840) to supply respective predicted taken target addresses for branch instructions, an execution pipeline (1740)... | 02/05/2008 |
| 7327805 | Device, apparatus and method for receiving data transmissions having different data rates A continuously tunable linear phase filter having a ground connection includes a three-terminal Bessel filter having an input terminal for receiving a signal, an output terminal for delivering a signal, a control terminal for receiving a control voltage, and a varac... | 02/05/2008 |
| 7327799 | Wireless mobile station and system in which rake unit and finger units perform a shared arithmetic operation A wireless mobile station comprising: a plurality of finger units for performing spread demodulation of a downstream signal transmitted from a base station through a transmission channel; and a rake unit for combining the spread-demodulated downstream signals which ... | 02/05/2008 |
| 7327307 | Radar system with adaptive waveform processing and methods for adaptively controlling the shape of a radar ambiguity function An adaptive waveform radar system transmits a selected waveform of a family of related waveforms and either phase shifts or bit shifts the radar return signal for correlating with the other waveforms of the family. In some embodiments, phase shifting may be performe... | 02/05/2008 |
