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7623561 Channel characteristics estimation system, channel characteristics estimation method, communication apparatus, and communication method  
Channel characteristics need to be estimated in a wireless communication system which performs frequency hopping. A transmission side aligns phase values of carriers of frequencies used for hopping...
7620005 Method and apparatus for code assignment in a spread spectrum wireless communication system  
Method and apparatus for code assignments in a spread-spectrum wireless communication system incorporating a Large Area Synchronized-Code Division Multiple Access (LAS-CDMA) protocol. The method...
RE40986 Channel simulator for mobile systems  
A device and a method at a mobile communication system which provide a flexible and realistic way of emulating the time dispersive qualities and the broadband frequency correlation qualities of a...
7613224 Qualification and selection of the frequency channels for an adaptive frequency hopping method by means of field strength measurement  
In a method for qualification of the transmission quality of a frequency channel in a wire-free communication system that has two or more frequency channels, units in the system communicate via the...
7613223 Time-frequency coding in a multi-band ultra-wideband system  
Time-frequency coding in a multi-band ultra-wideband system is generally described. In this regard a hopping code agent is presented to select a frequency hopping code for encoding and decoding...
7606327 Method to receive local information with a national broadcast service  
A receiver is disclosed. The receiver includes a first antenna, a second antenna, a system controller, a national broadcast demodulator, a local broadcast demodulator, and an information output...
7599418 Method and apparatus for a frequency hopper  
A method and system for generating a frequency hopping electromagnetic signal based on a baseband data signal includes a frequency hopping pre-compensator. The frequency hopping pre-compensator...
7592897 RFID readers system and methods for early hopping out of a frequency channel in the presence of RF interference  
RFID readers, systems, and methods are provided for overcoming the effects of RF interference. While a system is communicating in a channel, RF interference is monitored. If it is low, then hopping...
7589618 RFID readers systems and methods for hopping away from a frequency channel with RF interference  
RFID readers, systems, and methods are provided for overcoming the effects of RF interference. While a system is communicating in a channel, RF interference is monitored. If it is low, then the...
7577180 Method and system for maintaining synchronization in low-power mode over a frequency hopping radio link  
Systems and methods for maintaining synchronization of a base unit and a portable unit in a low-power mode are provided. The base unit and the portable unit communicate with each other via wireless...
7548578 Digital frequency hopping transceiver and method thereof  
The digital frequency-hopping (FH) transceiver and the method thereof can be applied to FH communication system with a short FH time. The transceiver employs a digital signal processing (DSP) in...
7545847 Frequency synthesizer applied to frequency hopping system  
A frequency synthesizer applied to a frequency hopping system includes a voltage controlled oscillator (VCO), a phase lock loop (PLL) system, a second frequency divider, a first SSB mixer, a second...
7535822 Synchronization of remote units for a communication network  
A method for maintaining the quality of transmission from a head end to a service unit in a telecommunications system that uses a multi-carrier transmission scheme with dynamic bandwidth allocation...
7529288 Channel qualification for an adaptive frequency hopping method by means of bit or packet error rate measurement and simultaneous field strength measurement  
In a method for qualification of a frequency channel in a wire-free communication system, data is transmitted on different frequency channels by means of an adaptive frequency hopping method. The...
7519100 Method and device for transmission/reception with frequency hopping  
A method and device for transmitting data in the form of a series of blocks in which each block of data is subjected to a frequency conversion in order to be transmitted at a carrier frequency. The...
7515627 System and method for ultra-wideband (UWB) communication transceiver  
An ultra-wideband (UWB) transceiver for use in UWB communication includes a voltage-controlled oscillator (VCO) configured to periodically and sequentially generate a series of base frequencies...
7508860 Pulse signal generator for ultra-wideband radio transception and radio transceiver having the same  
Provided are a pulse signal generator for UWB radio transception and a radio transceiver having the same. The pulse signal generator includes: an envelope generator generating a plurality of...
7480236 Multipoint-to-point communication using orthgonal frequency division multiplexing and identification codes  
Systems for multipoint-to-point communication using orthogonal frequency division multiplexing and identification codes are provided. In one embodiment, a system comprises: a host unit; and a...
7466741 Method and apparatus for concurrently processing multiple calls in a spread spectrum communications system  
The call processing state machines defined by the CDMA standards (e.g., IS-95 and IS-2000) are modified to include a “traffic channel” substate indicative of the mobile station processing at...
7453373 Integrated meter module and utility metering system  
Utility meter modules, antenna modules, pit sets, and pit lid assemblies are described, with regard to automated meter reading (AMR) systems, that prevent metering signal attenuation, pit leakage,...
7447252 Overhead reduction in frequency hopping system for intermittent transmission  
A radio transmission telemetry system includes several transmitters intermittently transmitting short messages indicative associated sensors status and a receiver for collecting data from the...
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...
7430232 Method and system for broadcasting a programme  
Method and apparatuses for broadcasting and receiving a programme are presented. A programme is broadcast from a broadcasting system. Broadcast programme-associated data is transferred from a...
7426177 Round trip delay adjustment in multipoint-to-point communication using orthogonal frequency division multiplexing  
Systems and methods for bidirectional communication are provided. In one embodiment, a method for aligning communications from a plurality of remote units in a multipoint-to-point orthogonal...
7411994 Methods and apparatus for adapting a hop sequence when establishing a communication connection  
Methods and apparatus are provided for establishing a connection between a scanner device and a pager device over a sequence of hop channels. The scanner device is repetitively activated and a hop...
7408914 Time-hopping systems and techniques for wireless communications  
Systems and techniques are disclosed relating to wireless communications. The systems and techniques involve wireless communications wherein a process, module or communications terminal schedules...
7388927 M-ary modulation of signals for coherent and differentially coherent receivers  
A system incorporates time-hopped impulse-radio (TH-IR), transmitted-reference impulse-radio (TR-IR) and noncoherent transceivers in the same wireless network. A transmitter modulates a sequence of...
7386026 Method and system for synchronizing and selectively addressing multiple receivers in a wireless, spread spectrum communication system  
A system and method for synchronizing and selectively addressing multiple receivers in a wireless communication system includes a spread spectrum transmitter and one or more spread spectrum...
7376171 Multiuser detection aided multiple access differential M-ary coding applications  
Techniques for multiple access differential M-ary coding applications that can be optionally aided by multiuser detection (MUD) are disclosed. An initial hopped feature decoding is performed to...
7359472 Method and apparatus for wireless data transmission  
A method and apparatus for wireless data transmission between a base station and one or more, in particular, passive and/or backscatter-based transponders, in which the base station modulates a...
7356094 Digital broadcast receiving apparatus  
A digital broadcast receiving apparatus for receiving a broadcast signal generated by combining sub signals modulated using a random sequence generated based on an initial value set in accordance...
7342972 Timing synchronization using dirty templates in ultra wideband (UWB) communications  
Techniques are described for synchronizing the timing of the receiver with the received waveform in ultra wideband (UWB) communication systems. The described techniques correlate the received...
7324582 System and method for the directional reception and despreading of direct-sequence spread-spectrum signals  
A system ( 100 ) and method for the reception and despreading of a code-division multiple access (CDMA) global positioning system (GPS) signal ( 200 ), or other direct-sequence spread-spectrum...
7318187 Outer coding methods for broadcast/multicast content and related apparatus  
Transmission techniques are provided that improve service continuity and reduce interruptions in delivery of content that can be caused by transitions that occur when the User Equipment (UE) moves...
7292617 Reducing mutual channel interference in frequency-hopping spread spectrum wireless communication systems  
A system and method for arbitrating among frequency-hopping spread spectrum communication systems are provided herein. An arbitrator calculates and compares hop frequencies for the communication...
7283579 Diversity synchronous connection-oriented audio communication modes  
The diversity SCO digital audio technique ( 300 ) provides packet protection through statistical diversity by adding new audio modes ( 202, 204 ) that operate within a Bluetooth framework ( 200 )....
7269199 Apparatus and method employing dynamic hop sequence adjustment in FHSS networks  
A frequency hopping spread spectrum apparatus and method is disclosed which mitigates interference from adjacent frequency hopping spread spectrum devices. The apparatus and method are adapted to...
7248566 Wireless network with transmission control in a half-duplex voice conference mode  
Voice packets transmitted by an originating wireless user for use in a half-duplex communication mode in a one to many communication session are monitored for an unexpected cessation. If an...
7239657 Interference protection  
Apparatus and a method for enhancing the interference resistance of so-called RFID systems, wherein identification messages delivered from an identification device are longer than the time for...
7236511 Structured adaptive frequency hopping  
The invention generally provides a method of intelligent frequency hopping such as in Bluetooth and Home RF networks. The method ( 100 ) includes the acts of sampling a plurality of channels in a...
7187730 Method and apparatus for predicting CCK subsymbols  
An apparatus and a method for symbol decoding of baseband data in a wireless communications network is disclosed, and specifically CCK subsymbol prediction and symbol demodulation that occurs at...
7164704 Beam forming for transmit using bluetooth modified hopping sequences (BFTBMH)  
A communication circuit ( 28 ) is designed with a signal processing circuit ( 370 ) arranged to produce a first plurality of data signals and receive a second plurality of data signals. A transmit...
7145934 Multichannel signal transmission and reception for bluetooth systems  
One embodiment of the present invention includes a circuit and a transmitter. The circuit generates a first signal at a first frequency and a second signal at a second frequency. The first...
7142582 Receiving and selectively transmitting frequency hopped data signals using a plurality of antennas  
A remote unit transmits data by Frequency hopping over a set of frequencies to a base station. A plurality of antennas at the base station receives the transmitted frequency hopped data. An optimal...
7142581 Methods and systems for selective frequency hopping in multiple mode communication systems  
Methods and systems for selecting a frequency hopping mode for a communication in a communication system having a plurality of transmission schemes are provided. One of the plurality of...
7123643 Communication connection set up method using predicted ID packet receiving processing start time  
In a method for setting up a communication connection between radio communication devices which carry out data communications by using a frequency hopping scheme, the first radio communication...
7116699 Frequency re-mapping for structure adaptive frequency hopping  
The invention generally provides a method of intelligent frequency hopping such as in Bluetooth and Home RF networks. The method ( 400 ) includes the acts of generating windows ( 410 ), sampling an...
7110431 Hardware and software for performing computations in a short-code spread-spectrum communications system  
The invention provides methods and apparatus for multiple user detection (MUD) processing that have application, for example, in improving the capacity CDMA and other wireless base stations. One...
7085535 Radio communication device for avoiding frequency collision among different radio control schemes  
A radio communication device is provided with a unit for acquiring a prediction information for a frequency, time or direction to be used by each one of the first radio control scheme of the radio...
7085306 System and method for a multi-frequency upstream channel in a computer network  
System and method for providing a multi-frequency upstream transmission channel to a network device. When a headend network entity generates an upstream channel descriptor message, the descriptor...
Matches 1 - 50 out of 240 1 2 3 4 5 >