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Class 455/59 - Single message via plural carrier wave transmission


Subclass of Class 455 - Telecommunications
Definition: Subject matter where a single message or intelligence is
No. of patents: 160
Last issue date: 03/06/2012


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NumberTitleIssue Date
8131218Methods and apparatus for wirelessly communicating signals that include embedded synchronization/pilot sequences
An embodiment for wirelessly communicating a signal includes a transmitter combining a plurality of phase shifted input data signals with a plurality of synchronization/pilot sequences to produce a plurality of combined signals, performing frequency domain-to-time d...
03/06/2012
8032085Spectrum-blind sampling and reconstruction of multi-band signals
A signal processing method includes sampling an analog signal, which has a spectral density defining one or more bands, to produce a digitized signal. A spectral transform of the digitized signal is expressed as a matrix multiplied by a vector, wherein the vector in...
10/04/2011
7787824Receiver, transmission device and receiving method
An adaptive array antenna part receiving a plurality of transmitted signals in which sub-carrier signal components of predetermined values is suppressed before transmission in order to distinguish a plurality of transmission antenna, by means of the plurality of tra...
08/31/2010
7610017Increased data rate transmissions of a wireless communication
A method for receiving high data rate wireless communication transmissions begins by receiving a plurality of radio frequency (RF) signals in accordance with a wireless communication standardized data rate on a plurality of RF channels. The method continues by conve...
10/27/2009
7515875Multi-carrier communication apparatus
A multi-carrier communications apparatus which communicates between a first station and a second station as a destination station using a reference signal used for estimating a state of a channel, the multi-carrier communications apparatus comprising a multi-carrier...
04/07/2009
7436892Method and apparatus for coding in a telecommunications system
First and second transmission links are established with a remote station. An information signal is encoded to provide an encoded information signal having more bits than the information signal. First and second transmission signals are provided wherein each transmi...
10/14/2008
7433432Adaptive detector for multiple-data-path systems
An adaptive, reduced-complexity soft-output maximum-likelihood detector that is operable to process data by adaptively selecting a processing scheme based on a determination of signal quality. The signal quality is derived as a function of the noise, the modulation ...
10/07/2008
7426240Data processing apparatus and method operable to map and de-map symbols and carrier signals of an Orthogonal Frequency Division Multiplexed (OFDM) symbol
A data processing apparatus maps input symbols to be communicated onto a predetermined number of carrier signals of an Orthogonal Frequency Division Multiplexed (OFDM) symbol. The data processor includes an interleaver memory which reads-in the predetermined number ...
09/16/2008
7418043Software adaptable high performance multicarrier transmission protocol
Techniques for reducing peak-to-average power in multicarrier transmitters employ peak cancellation with subcarriers that are impaired by existing channel conditions. The use of Carrier Interferometry (CI) coding further improves the effectiveness of peak reduction....
08/26/2008
7418047Communication apparatus using a plurality of modulation schemes and transmission apparatus composing such communication apparatus
A first signal generation section 11 generates a baseband modulation signal for an ASK modulation scheme from transmission data. A second signal generation section 12 generates a pair of baseband modulation signals for a non-ASK modulation scheme from ...
08/26/2008
7414959Communication device for receiving and transmitting OFDM signals in a wireless communication system
A communication device for receiving and transmitting OFDM signals in a wireless communication system, in which each OFDM signal is composed of a plurality of subcarrier signals each being assigned to a respective transmission channel of said communication system, i...
08/19/2008
7408997Modulation/demodulation apparatus using matrix and anti-matrix
A modulation and demodulation system is provided. The system uses n sub-carrier frequencies and an oversampling positive integer and includes a modulation circuit and a demodulation circuit. The modulation circuit includes a modulation ROM that stores columns of ele...
08/05/2008
7372910Apparatus and method for generating preamble sequences in an OFDM communication system
An apparatus for generating a preamble sequence in an orthogonal frequency division multiplexing (OFDM) communication system using A subcarriers in a frequency domain. A preamble sequence generator generates a length−M+N+k preamble sequence, where M+N+k is less th...
05/13/2008
7369826Method for monitoring broadcast signals at alternative frequencies and gain control unit
Many broadcast stations transmit their programs via a variety of different frequencies. The invention relates to monitoring alternative frequencies during the reception of a broadcast signal at a present frequency. Whenever the broadcast signal at an alternative fre...
05/06/2008
7369549Adaptive rate prioritizing
Systems and techniques are disclosed relating to communications. The systems and techniques involve measuring a quality of a transmission from a remote location, identifying a data rate as a function of the measured quality, the identified data rate being capable of...
05/06/2008
7362260Method of using continuous-wave radiation for detecting and locating targets hidden behind a surface
Continuous-wave radiation is used to detect a target hidden behind a surface. In an embodiment, a transmitter directs a beam of continuous-wave microwave radiation from a transmitting location, and reflected radiation from the target is received at first and second ...
04/22/2008
7352993Data reproducing apparatus and data reproducing system
A data reproducing system of the invention includes a data transmitter for transmitting a data signal containing audio data by air and a data receiver for receiving the data signal by air from the data transmitter. The data receiver includes a data receiving section...
04/01/2008
7352997Method, apparatus and system for hosting a group of terminals
A method, apparatus, and system allowing terminal hosted group activities is provided, whereby proximity and non-proximity connections between a hosting mobile terminal and participating terminals enables group hosting activity. The hosting mobile terminal guides in...
04/01/2008
7349497Receiver circuit
A receiver circuit is for processing a received signal which includes at least a first portion and a second portion which repeats the content of the first portion after a repeat interval. For example, the receiver may be for DVB-T signals using COFDM. In order to en...
03/25/2008
7349484Adjustable dual-band link
A communication system utilizing an adjustable link has at least a first data transmission circuit including at least a first communication link circuit. The first communication link circuit has a baseband circuit and at least a passband circuit. The baseband circui...
03/25/2008
7343544Optical disk playback apparatus and data playback method therefor
An optical disk playback apparatus for playing back or reproducing main data and its associated sub-code which are read from an optical recording medium comprises an interleave RAM for storing the main data. The optical disk playback apparatus performs a predefined ...
03/11/2008
7327256Systems and methods for tagging and identification
A mother and infant matching and security system is disclosed. The mother and infant matching and security system comprises a first tag unit adapted to be secured to an infant. The first tag unit is operable to transmit a first signal having a low frequency and a se...
02/05/2008
7321735Optical down-converter using universal frequency translation technology
A method and system for converting an optical signal to electrical information signals, including demodulated baseband information signals and modulated baseband signals at multiple harmonics. In an embodiment, the optical information signal is amplitude modulated w...
01/22/2008
7310378Estimating a transmission channel with pilot symbols distributed in lattice structure
A method for estimating a transmission channel from a multicarrier signal transmitted through said transmission channel, comprising real pilot symbols and so-called pure imaginary pilot symbols, consists in selecting one or several values zk of the receiv...
12/18/2007
7295826Integrated frequency translation and selectivity with gain control functionality, and applications thereof
Methods and apparatuses for frequency selectivity and frequency translation, and applications for such methods and apparatuses, are described herein. The method includes steps of filtering an input signal, and down-converting the filtered input signal. The filtering...
11/13/2007
7292835Wireless and wired cable modem applications of universal frequency translation technology
Frequency translation and applications of same are described herein, including cable modem applications. Such applications include, but are not limited to, frequency down-conversion, frequency up-conversion, enhanced signal reception, unified down-conversion and fil...
11/06/2007
7274751Apparatus and method for transmitting and receiving signals using multiple antennas in mobile communication systems
According to one aspect of the present invention, there is provided a signal transmission apparatus for a mobile communication system. In the signal transmission apparatus, a frame segmentation section segments an input frame into Bk bit group, where k=1,...
09/25/2007
7268680Electronic identification tag with electronic banding
A tag unit is disclosed. The tag unit comprises of transmitting unit and a banding material coupled to the transmitting unit. A radio frequency and identification (RFID) circuit is coupled to the transmitting unit and the banding unit. ...
09/11/2007
7251461Wireless communications system, wireless transmitter, and wireless receiver
This invention includes a wireless transmitter comprising an IF-signal generator that modulates input signals into those of an intermediate frequency band, signal distributors that distribute signals from the IF-signal generator, and a plurality of signal-transmissi...
07/31/2007
7242721Method for estimating the transfer function of a multicarrier signal transmission channel and corresponding receiver
The invention concerns a method for estimating the transfer function of a multicarrier signal transmission channel consisting of a temporal succession of symbols of a set of data elements, each of the data elements modulating a carrier frequency of the signal, the d...
07/10/2007
7239666Communication system
A communication system that can satisfactorily communicate with a mobile station by a transmitter and receiver of a simple arrangement wherein a plurality of carriers having different frequencies are transmitted simultaneously and data is transmitted on the basis of...
07/03/2007
7236532Method of initializing a communication system with different bandwidth receivers and transmitters
A method of communicating across a channel includes receiving information having a known bandwidth and a known spectrum. The information is preferably in the form of a multicarrier modulated signal, e.g., a DMT signal. In one aspect, this information is received at ...
06/26/2007
7233582Wireless communication system and transmission power control method therefor
The total amount of power for communications transmitted over channels susceptible to quality fluctuation is decreased to reduce interference with other communications and increase the system's overall capacity. When channel-encoded data is to be transmitted, the qu...
06/19/2007
7224675Alternative frequency strategy for DRM
A radio transmission signal consisting of signal frames that comprise a dynamic data part and a quasi-static data part according to the present invention is characterized in that the dynamic data part of a respective frame contains an indicator showing in which foll...
05/29/2007
7221688Method and apparatus for receiving a digital audio broadcasting signal
A method for processing a composite digital audio broadcasting signal including an analog modulated portion in a central frequency band and digitally modulated portions in upper and lower sidebands with respect to the central frequency band, the method comprises the...
05/22/2007
7221915Electromagnetic wave transmitter, receiver and transceiver systems, methods and articles of manufacture
The invention relates to a system for electromagnetic processing of an input wave involving receiving a modified signal derived from two or more signals that represent the input wave when combined; and regulating the modified signal using at least one analog signal ...
05/22/2007
7203249Spatio-temporal processing for communication
A space-time signal processing system with advantageously reduced complexity. The system may take advantage of multiple transmitter antenna elements and/or multiple receiver antenna elements, or multiple polarizations of a single transmitter antenna element and/or s...
04/10/2007
7197280Method and arrangement for fast frequency searching in broadband mobile radio receivers
In the method according to the invention for searching for the carrier frequency f of a mobile radio transmitter in a mobile radio receiver, two or more values e(k) of the spectral input power are measured at different discrete test frequencies fk, where ...
03/27/2007
7184713Rate control for multi-channel communication systems
Techniques to determine a set of rates for a set of data streams to be transmitted in a multi-channel communication system. A group of transmission channels to be used for each data stream is initially identified. An equivalent system for each group is then defined ...
02/27/2007
7167684Rate control for multi-channel communications systems
Techniques and apparatuses to determine a set of rates for a set of data streams to be transmitted in a multi-channel communication system. A group of transmission channels to be used for each data stream is initially identified. An equivalent system for each group ...
01/23/2007
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