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Class 375/140 - Direct sequence


Subclass of Class 375 - Pulse or digital communications
Definition: Subject matter including a form of modulation wherein a
No. of applications: 80
Last issue date: 04/05/2012


1    
Application No.Application TitleIssue Date
20120082187System And Method For Detecting Packet Synchronization
A method of providing frame synchronization for GPS signals can include performing coherent bit extraction on the GPS bits and then performing coherent frame boundary detection based on the bits of the coherent bit extraction. Concurrently, differential bit extraction o...
04/05/2012
20120039281Randomization of Block Spread Signals
A user equipment locally stores a shift pattern that is specific to a cell to which the user equipment is currently attached, and processes a group of modulation symbols or bits for uplink transmission by a) cyclically shifting the modulation symbols or bits within the ...
02/16/2012
20120027048Method and Arrangement of Delay Spread Compensation
A method of delay spread compensation, suitable for use in a communication device a having plurality of receiver antennas, is disclosed. The method comprises receiving a plurality of signals, each via a respective antenna, wherein each signal comprises a signal componen...
02/02/2012
20120014415TRANSMITTER BEAMFORMING STEERING MATRIX PROCESSING AND STORAGE
A mechanism for processing beamforming steering matrices in a transceiver system. A plurality of beamforming steering matrices associated with a plurality of subcarriers of an RF signal received at the transceiver system are generated. The beamforming steering matrices ...
01/19/2012
20120002705MOBILE COMMUNICATION SYSTEM AND OPERATION METHOD IN MOBILE COMMUNICATION
A mobile communication system includes: a base station configured to form a cell and transmit a downlink signal which has been spread with a downlink scrambling code, toward the cell; a mobile station connected with the base station by radio when the mobile station is i...
01/05/2012
20110317671MULTIPLE-ACCESS HYBRID OFDM-CDMA SYSTEM
In one aspect of a multiple-access OFDM-CDMA system, data spreading is performed in the frequency domain by spreading each data stream with a respective spreading code selected from a set of available spreading codes. To support multiple access, system resources may be ...
12/29/2011
20110317744SYSTEM AND METHOD FOR SPREAD SPECTRUM ACOUSTIC COMMUNICATION
Systems and methods for communicating with acoustic signals and, more particularly, systems and methods for communicating using direct-sequence spread spectrum acoustic waves generated by non-impulsive sources. A data signal is modulated by a pseudorandom noise signal a...
12/29/2011
20110317743SPREAD SPECTRUM WIRELESS COMMUNICATION CODE FOR DATA CENTER ENVIRONMENTS
A method for wirelessly transmitting management data without cables in a data center is provided. Management data is obtained at a device in the data center. A wireless management data signal is generated from the management data. The wireless management data signal is ...
12/29/2011
20110317745MOBILE COMMUNICATION SYSTEM, RADIO BASE STATION, AND MOBILE STATION
In a mobile communication system according to the present invention, a reference signal sequence includes a plurality of signal sequences assigned in slot units in the predetermined physical channel based on a hopping pattern and a sequence shift pattern; the hopping pa...
12/29/2011
20110305261BASE STATION AND MOBILE STATION COMMUNICATING WITH OFDM SYSTEM USING A PLURALITY OF SUBCARRIERS AND COMMUNICATION METHOD WITH OFDM SYSTEM USING A PLURALITY OF SUBCARRIERS
A multicarrier communication apparatus that is capable of suppressing interference of feedback information with other channels and alleviating a reduction in an uplink capacity. In PL signal reception section (260) of this apparatus, PL signal extraction section ...
12/15/2011
20110280284WIRELESS COMMUNICATION TERMINAL DEVICE AND METHOD OF SIGNAL DIFFUSION
Disclosed is a wireless communication terminal device that is capable of preventing inter-coding interference upon each of a plurality of base stations, even when the timing changes for a transmission of a control signal that is CoMP received by the plurality of base st...
11/17/2011
20110243194HYBRIDIZATION DEVICE WITH SEGREGATED KALMAN FILTERS
The invention relates according to a first aspect to a hybridization device (1) comprising a virtual platform (2) calculating inertial measurements (PPVI), a bank (3) of Kalman filters each formulating a hybrid navigation solution on the basis of th...
10/06/2011
20110243193SENDING APPARATUS, RECEPTION APPARATUS, WIRELESS APPARATUS AND TRANSMISSION MODE CONTROL METHOD FOR SENDING APPARATUS
[Object] To enable reduction of electrical power consumption and efficient use of channels.

[Solution] A sending apparatus is configured to be able to support a plurality of transmission modes that use different occupied frequency bands in ...

10/06/2011
20110228683RADIO COMMUNICATION METHOD, RADIO COMMUNICATION DEVICE, RADIO COMMUNICATION PROGRAM, AND RADIO COMMUNICATION SYSTEM
In cooperative sensing in which a plurality of cognitive radio apparatus collaboratively exchange sensing information on a status of frequency band usage as a secondary system, the sensing information is efficiently exchanged in the secondary system without influencing ...
09/22/2011
20110228820METHOD AND SYSTEM OF LOCATING OBJECTS
The invention concerns a method and system of locating objects by means of UWB signals, the system including a search device (D1), incorporated in a portable apparatus (11) and provided with a pair of antennae (A1, A2), and at least one targe...
09/22/2011
20110216809Approach For Managing The Use Of Communications Channels Based On Performance
An approach for selecting sets of communications channels involves determining the performance of communications channels. A set of channels is selected based on the results of performance testing and specified criteria. The participant generates data that identifies th...
09/08/2011
20110170574METHOD FOR THE SECURE TRANSMISSION OF INFORMATION USING MULTIPLE LPD AND LPI SECONDARY CARRIERS UNDER A PRIMARY CARRIER WITH RELATIVE CARRIER OFFSET
A method of reducing probability of detection and interception of a sub-carrier signal comprising encoding, using an encoder, information that is to be transmitted via the sub-carrier signal, modulating, using a modulator, the encoded information such that a modulated s...
07/14/2011
20110171917SYSTEM AND METHOD PROVIDING VARIABLE-FREQUENCY IF CONVERSION IN A MULTIMODE COMMUNICATION DEVICE
A system and method providing variable-frequency IF conversion in a multimode communication device. Various aspects of the present invention provide a multimode communication device comprising at least one RF signal receiver adapted to receive at least a first RF signal...
07/14/2011
20110164660RADIO BASE STATION ACCOMMODATING METHOD AND NETWORK DEVICE
A radio base station accommodating method according to the present invention includes step A of causing a network device 100 to judge a type of a radio base station 200, 201 upon receipt of a connection request from the radio base station 200, 201, ...
07/07/2011
20110110399BUFFER-BASED GENERATION OF OVSF CODE SEQUENCES
In one embodiment, a buffer-based method for generating codes (such as Orthogonal Variable Spreading Factor (OVSF) codes) for spreading and despreading data, without using a chip-rate counter. First, a buffer is populated with initial values based on a received spreadin...
05/12/2011
20110075705Frequency Tracking Method and Apparatus Applied to Positioning System
A frequency tracking method applied to a positioning system is provided. The method includes receiving a baseband signal, the baseband signal includes a line of sight (LOS) signal and a multipath signal; generating a cost function according to equal step frequencies, th...
03/31/2011
20110051781MODULATION SIGNALS FOR A SATELLITE NAVIGATION SYSTEM
A method of generating a subcarrier modulation signal for modulating a further signal, the method involving multiplexing or selectively combining portions of first and second subcarriers to produce the subcarrier modulation signal....
03/03/2011
20110051782Method, System and Apparatus for Wideband Signal Processing
Embodiments include methods, systems, and apparatuses capable of dynamically and adaptively operating on wideband signals. Examples include state variable filters whose center frequencies can be tuned using variable gain blocks coupled to outputs of filter integrators. ...
03/03/2011
20110002363Method and Apparatus for Generating Scrambling Codes
Wireless transmission techniques are described, including techniques used to generate scrambling codes for use in wireless transmissions, such as spread spectrum transmissions. In some embodiments, scrambling codes may be iteratively generated using multiplicative facto...
01/06/2011
20100332735FLASH MEMORY DEVICE AND METHOD FOR PROGRAMMING FLASH MEMORY DEVICE
A flash memory device resilient to bit errors and a programming method suitable for the flash memory are provided. The flash memory device stores data in a parallel manner in a superpage which is generated by grouping a plurality of physical pages into a logical page. T...
12/30/2010
20100315967MULTI-FREQUENCY PILOT SIGNALS
An access point is identified based on pilot signal information that appears on different frequencies. Here, a combination of one or more pilot PN spreading codes or one or more PN offsets on different frequencies are used to uniquely identify an access point. For examp...
12/16/2010
20100309954SYSTEMS AND METHODS FOR USING CODE SPACE IN SPREAD-SPECTRUM COMMUNICATIONS
Systems and methods for improving the performance of direct-sequence spread-spectrum communication systems. In one embodiment, a system comprises at least one communication channel that utilizes two different orthogonal spreading codes and corresponding portions of the ...
12/09/2010
20100296550METHOD OF SPACE TIME CODING WITH LOW PAPR FOR MULTIPLE ANTENNA COMMUNICATION SYSTEM OF THE UWB PULSE TYPE
A method of space time coding for UWB transmission system including a plurality of radiative elements, the method coding a block of information symbols S=(σ1, σ2, . . . , σP) belonging to a M-PPM-M′-PAM modulation alphabet, as a seq...
11/25/2010
20100272154SPREAD-SPECTRUM MODULATION AND DEMODULATION
Certain aspects of the present disclosure relate to a method for modulating and demodulating a spread-spectrum data stream using multiple generalized Golay codes....
10/28/2010
20100232475Equal Power Output Spatial Spreading Matrix for Use in a Wireless MIMO Communication System
A spatial spreading unit is configured to utilize a spatial spreading matrix to distribute two or more encoded spatial data streams to transmission antennas. The spatial spreading matrix has components (i) associated with each row of a row dimension having a number of r...
09/16/2010
20100226414System and a Method for Wireless Transmission and Reception of Concatenated Impulse Radio Ultra-Wideband Data Bursts
The present invention relates to a wireless communications system, in particular to a method for transmitting and receiving concatenated data bursts in a wireless communications system. The invention is particularly useful in the field of impulse-based ultra-wideband sy...
09/09/2010
20100215077Multi-Band OFDM Communications System
A method for providing communication in a wireless network comprising one or more simultaneously operating pico networks includes dividing UWB spectrum into a plurality of frequency bands. These bands are formed into band groups. At least one band group is assigned to e...
08/26/2010
20100195702RADIO COMMUNICATION DEVICE AND RESPONSE SIGNAL SPREADING METHOD
A radio communication device capable of randomizing both inter-cell interference and intra-cell interference. In this device, a spreading section (214) primarily spreads a response signal in a ZAC sequence set by a control unit (209). A spreading section (...
08/05/2010
20100166040METHOD AND SYSTEM FOR ADAPTING AN EFFECTIVE SPREADING SEQUENCE IN A COMMUNICATION SYSTEM USING DIRECT SEQUENCE SPREADING
A method and system for adapting an effective spreading sequence in a wire-line or a wireless communication system using direct sequence spreading system is described. A station of the communication system determines a state of a communication channel, represented by, e...
07/01/2010
20100148961ACTIVE VIRTUAL FENCE USING MESH NETWORKED RF TAGS
A system capable of monitoring an area and detecting a disturbance with the area. The system has a plurality of ultra-wide band radio frequency tags, each of the tags including a digital signal processing module configured to monitor changes in radio frequency multipath...
06/17/2010
20100151801Multiple Protocol Signal Detector
A Multiple Protocol Signal Detector, MPSD (320, 500) has a mixer (406) that receives signal energy from a multi-band antenna system (324) via a low noise amplifier (402) and from a variable frequency synthesizer (408) via a first varia...
06/17/2010
20100142588PARALLEL SEQUENCE SPREAD SPECTRUM TYPE CHAOTIC SIGNAL TRANSMISSION DEVICE
A parallel sequence spread spectrum type chaotic signal transmission device is disclosed to convert a serial data signal into a parallel data signal and transmit a chaotic signal according to the converted data signal. The parallel sequence spread spectrum type chaotic ...
06/10/2010
20100118919WIRELESS COMMUNICATION APPARATUS AND RESPONSE SIGNAL SPREADING METHOD
A wireless communication apparatus capable of minimizing the degradation in separation characteristic of a code multiplexed response signal. In this apparatus, a control part (209) controls both a ZC sequence to be used in a primary spreading in a spreading part ...
05/13/2010
20100104121Low Power Signal Transmission
A low-power implant system. The system includes an implant for implantation into a person, such as a cochlear implant or a middle ear implant. The implant is capable of communicating with a device via transmission of ultra wideband pulses. The device may be adapted to b...
04/29/2010
20100080266Physical Layer Data Unit Format
In a wireless communication system wherein communication devices exchange information utilizing data units that conform to a first format, wherein the first format includes a short training field (STF) spread with a first spread code and a first cover code, a method is ...
04/01/2010
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