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7613255 |
Method for estimating communication conditions affecting an UWB wireless link
The present invention relates to a method for transmitting data by means of at least one pulse sequence carried by a radio signal, in the course of which a power value representative of an amount...
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7613239 |
Digital signal offset adjusting apparatus and pulse pattern generator using the same
A digital signal offset adjusting apparatus has a capacitor causing an output terminal to pass a high frequency band of an input digital signal. A first coil has one end connected to an input...
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7613222 |
Wideband communication method
A communication method includes establishing a wideband communication link between a first device and a second device, transmitting a first set of consecutive data bits from the first device to the...
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7590198 |
Impulse-based communication system
A synchronization acquisition method for impulse-based communication including synchronizing received information with a first pulse signal having the same period as the transmit information...
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7587002 |
Wireless transmitting and receiving device and method
A wireless device, method, and signal for use in communication of a wireless packet between transmitting device and a wireless receiving device via a plurality of antennas, wherein a signal...
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7586293 |
Digital modulation circuit
Provided is a digital modulation circuit constructed with only a digital circuit. The digital modulation circuit includes: a clock generator which generates a reference clock pulse having a...
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7570713 |
System and method for anticipatory receiver switching based on signal quality estimation
A system and method of switching from a first receiver receiving a constant bit rate signal to a second receiver receiving the constant bit rate signal, where the constant bit rate signal received...
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7564863 |
Frequency offset differential pulse position modulation
The present invention provides such a need by utilizing a frequency offset differential pulse position modulation scheme to transmit data between computing devices within a wireless network system....
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7561808 |
System and method of using variable pulses for symbology
A method and system for storing and transmitting data using variable pulse symbology over a fiber optic or ultra wide band system. Data is stored in memory, accessed and transformed into an...
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7551670 |
UWB communication device and UWB communication method
The present invention provides a UWB communication device and a UWB communication method with which the communication speed can be improved, and with which accurate sending and receiving of data...
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7539279 |
Logarithmic spectrum transmitter waveform for controlled-source electromagnetic surveying
Waveforms for controlled source electromagnetic surveying. The waveforms have frequency spectra that include three or more frequencies spaced at substantially equal intervals on a logarithmic...
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7539245 |
System and method for digital transmission and modulation of conjugate pulse position
The invention relates to a communication system comprising a modulator, encoder, decoder, demodulator, and a data input source, which employs an improved modulation technique by effectively...
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7535958 |
Hybrid wired and wireless chip-to-chip communications
A hybrid wireless and wired system distributes precise timing and synchronization information among the nodes over a wired interconnect structure while data is transmitted wirelessly using...
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7535957 |
Transmitter circuit, receiver circuit, clock data recovery phase locked loop circuit, data transfer method and data transfer system
[Problems] To realize a reliable and stable transfer of digital data that does not require a reference clock and a handshake operation. [Means for Solving the Problem] The present invention...
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7532668 |
Transmitter and transmitting method, receiver and receiving method, pulse detection method, and tracking method
Method and apparatus for sending and receiving pulses in the ultra wide band communication system while avoiding spectrum problems. Carrier waves, for example, are generated with a frequency set in...
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7525398 |
Acoustically communicating data signals across an electrical isolation barrier
In one aspect, a data communication system includes a modulator, an integrated acoustic data coupler, and a demodulator. The modulator modulates a carrier signal having a frequency in an operating...
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7480331 |
Method and device for pulse width modulation
A method and a device are proposed for the conversion of a quantized signal into a pulse width modulated signal, wherein dependent on a signal value of the quantized signal in each case a pulse...
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7466753 |
Microcontroller having a digital to frequency converter and/or a pulse frequency modulator
A microcontroller having digital to frequency converter and pulse frequency modulator capabilities. The digital to frequency converter (DFC) generates a 50 percent duty cycle square wave signal...
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7466752 |
Determination of the position of a pulse peak
The invention relates to a method for determining the position x p of a peak of a pulse in a signal received at a receiver. In order to improve the accuracy of this determination, the method...
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7464323 |
Algebraic geometric code adapted to error bursts
The present invention concerns channel codes particularly well adapted to transmission in channels in which errors tend to occur in bursts. Moreover, the codes according to one embodiment of the...
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7460831 |
System and method for excluding narrow band noise from a communication channel
A signal filtering system and method that may be used in conjunction with a repeater or an input stage of a base-station. The system may include an analog to digital converter adapted to sample a...
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7460623 |
Digital two-stage automatic gain control
A digital automatic gain control circuit is disclosed. The circuit includes a selector, a scaler, a detector, a gain adjustor and a controller. In one exemplary aspect, the selector receives an...
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7453950 |
System and method of efficiently modulating data using symbols having more than one pulse
A method and apparatus to improve modulation efficiency. A symbol is created in which the relative position of a second pulse is a symbol period encode at least one bit. The symbol is transmitted...
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7447251 |
Frequency hopping spread spectrum scheme for RFID reader
A system and method is provided for implementing forced frequency “hops” if the time it takes to perform a particular transaction is greater than the time available on a particular carrier...
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7436883 |
Nonlinear inversion
A system and method are disclosed for processing a signal propagated through a nonlinear channel. The method includes modeling the channel characteristics to produce a linearized channel model,...
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7418297 |
Frame length modulation and pulse position modulation system
A system includes a transceiver circuit to transceive at least a first analog signal and a digital signal. The system also includes a controller circuit, coupled to the transceiver circuit, to...
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7418036 |
Method and circuit for timing pulse generation
In a method and a circuit for timing pulse generation, a frame pulse of a corresponding system is masked when an alarm signal of either a working system or a protection system is received, a...
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7414463 |
Demodulator for demodulating pulse position modulated signal
A PPM signal demodulator for demodulating a PPM signal transmitted in a UWB radio communication system includes a rectifier for rectifying a received PPM signal to obtain an absolute value signal,...
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7409002 |
Signal modulation
According to an embodiment of the invention, a method and apparatus for signal modulation are described. According to an embodiment of the invention, a method comprises producing and transferring a...
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7403746 |
Adaptive frame durations for time-hopped impulse radio systems
A method determines a duration of a frame in an impulse radio system for radio ranging. Channel state information of a channel between two transceivers is estimated periodically. A signal to noise...
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7388911 |
In-band-on-channel broadcast system for digital data
An FM broadcast transmitter transmits a broadcast signal having a carrier at a broadcast frequency and sidebands, able to be transmitted at full power, within a transmission bandwidth around the...
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7386071 |
Method and apparatus for decoding an incident UWB signal with inter symbol interferences
The method is for decoding an incident UWB signal including successive incident pulses respectively received during successive Pulse Repetition Periods (PRP). The method includes determining a...
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7386045 |
Dynamic differentiated link adaptation for ultra-wideband communication system
Optimum usage of time diversity and significantly higher data rates are achieved by utilizing an adaptive Ultra-wideband impulse radio (UWB IR) transmission scheme based upon information about the...
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7376208 |
Reception method for packetized information with automatic repeat request
A decoding method is carried out in a receiver configured to accept format information relating to sequences of input data, to use format information in the decoding of each input sequence, and to...
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7366235 |
UWB demodulating apparatus
A demodulated signal is to be generated by use of a first detection signal detected a presence/absence of a signal according to a correlation between a reception signal PPM-modulated at a pulse...
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7358781 |
Automation device with stored profile
The invention relates to an automation device, in which a multiplicity of physically distributed functional units communicate with each other by means of a common transmission protocol. The device...
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7356100 |
Estimating channel impulse response and equalizer coefficients in UWB communication systems
A method estimates a channel impulse response in an ultra wide bandwidth (UWB) system. Multiple training sequences modulated at a chip rate are received. Each training sequence is sampled by...
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7352793 |
System and method for ultra wideband communications using multiple code words
A method is provided for operating a wireless device. In this method, a first operation is performed on a wireless signal using a first group of wavelets arranged according to a first analog code...
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7349471 |
PPM receiving system and method using time-interleaved integrators
A communication receiver ( 30 ) includes a data receiver ( 34 ) that receives a pulse-position modulated signal ( 38 ). A clock circuit ( 70 ) separates a reference clock signal ( 36 ) into...
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7336736 |
Method of detecting and processing pulsed signals in a radio signal
The invention allows the detection and processing in a radio signal received by a receiver, of any signal of “pulsed” type present in radio signals applied to the input of a radiofrequency...
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7295638 |
Communication device
A direct sequence spread spectrum (DSSS) receiver ( 100 ) consistent with certain embodiments has a frequency generator ( 112 ) that generates a local oscillator signal without use of a...
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7295082 |
Pulse frequency modulation oscillating circuit for a DC/DC converter
A pulse frequency modulation oscillating circuit includes a reference voltage generator for generating a first reference voltage and a second reference voltage, a first comparison circuit for...
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7289561 |
Method and device for controlling a pulse generator for the emission of pulse signal of ultra wideband position-modulated type
Pulses of a signal, which are respectively contained in successive time windows, may be generated by a generator, and a control device may formulate a control signal for the generator including,...
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7289560 |
Digital modulation and demodulation technique for reliable wireless (both RF and IR) and wired high bandwidth data transmission
A communication system compensates pulse positioned modulated data signals for channel induced intersymbol interference and extracts pulse positioned encoded data from a received signal corrupted...
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7283011 |
Method for performing dual phase pulse modulation
A modulation method, referred to as dual phase pulse modulation (DPPM), represents digital data as a series of high and low pulses whose widths represent groups of M data bits, with both the high...
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7280615 |
Method for making a clear channel assessment in a wireless network
A method is provided for performing a clear channel assessment in a wireless network. The method involves first listening for channel energy on a wireless channel. Whatever channel energy is heard...
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7274754 |
Method and apparatus for frequency division multiplexing
A radio transmitter and receiver arrangement includes a transmitter and a receiver. The transmitter generates an electromagnetic carrier that varies in frequency throughout a channel interval, and...
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7268638 |
Apparatus and method for data rate multiplication
The invention is a method for pulse position modulating signals which are synchronized to clocked bit periods using a clock comprising the steps of generating two, three or n signals to mark the...
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7224728 |
Pulse width modulator and pulse width modulation method
A pulse width modulator for producing a PWM signal having reduced nonlinear distortion through interpolation processing with fewer computation steps is provided. The computational processing,...
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7221911 |
Multi-band ultra-wide band communication method and system
The present invention provides ultra-wide band communication systems and methods, including multi-band ultra-wide band communication systems and methods. Methods and systems are provided in which...
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