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| Number | Title | Issue Date |
| 8184672 | Frequency hopping A cellular communications system includes a base station and a plurality of user devices, wherein each user device is operable to communicate with the base station over a communication channel having a plurality of frequency resources, wherein the base station is op... | 05/22/2012 |
| 8170080 | Frequency hopping A communications system is described in which user devices communicate with an associated base station. The user devices employ frequency hopping techniques to provide frequency diversity in their communications with the base station. Techniques are described for re... | 05/01/2012 |
| 8160119 | Method and device for anti-interference fighting in a telecommunications system A method of fighting interference in a frequency-hopping communication system is disclosed. The system has at least one main sensor and one or more auxiliary sensors. According to at least one embodiment, frequency-hopping signals are received. The frequency-hopping... | 04/17/2012 |
| 8160120 | Method for transmitting data between a control unit and a plurality of remote I/O units of an automated installation A control unit sends a plurality of request messages to the I/O units. The I/O units send a plurality of response messages to the control unit. The request messages and response messages are sent using radio-frequency signals. The I/O units expect to receive a reque... | 04/17/2012 |
| 8155167 | Low complexity frequency hopping solution for performance testing system and method A system and method for low complexity frequency hopping simulation for communication device performance testing is disclosed. A baseband and channel model combination in a baseband processing module (602) of a testing system (600) reduces the required... | 04/10/2012 |
| 8149893 | Reliable wireless communication system using adaptive frequency hopping A method and system, the method including determining a frequency quality measurement value for each of a plurality of frequencies a network coordinator can use in a frequency hopping sequence for communicating with a client, classifying each of the plurality of com... | 04/03/2012 |
| 8130812 | Base station, user device, and communication control method Multiple reference signal transmission bandwidths are defined for system frequency bands and hierarchical reference signal bandwidths are defined for each reference signal transmission bandwidth such that a reference signal bandwidth lower than a highest-order refer... | 03/06/2012 |
| 8102894 | Communication system and its method In a communication system including a plurality of pairs of a transmitting device 2 and a receiving device 3, the transmission performance in the pairs is to be improved. The transmitting device 2-k transmits a transmission signal sk... | 01/24/2012 |
| 8098709 | Wireless device configured to exclude frequency bands based on field intensity measurement A wireless device including a first radio communication portion configured to effect radio communication with a first external communication device while using frequency bands selected one after another from among a group of frequency bands, a field intensity measur... | 01/17/2012 |
| 8098710 | Methods and apparatus for flexible hopping in a multiple-access communication network Techniques for efficiently designing random hopping patterns in a communications system are disclosed. The disclosed embodiments provide for methods and systems for generating random hopping patterns, updating the patterns frequently, generating different patterns f... | 01/17/2012 |
| 8098711 | Methods and apparatus for flexible hopping in a multiple-access communication network Techniques for efficiently designing random hopping patterns in a communications system are disclosed. The disclosed embodiments provide for methods and systems for generating random hopping patterns, updating the patterns frequently, generating different patterns f... | 01/17/2012 |
| 8090001 | Fast frequency-hopping transceiver and method A fast frequency-hopping transceiver comprises a RF-unit arranged on a first chip, a base-band unit on a second chip, a bidirectional operable data and control interface arranged between said first and said second chip having at least one data line for data communic... | 01/03/2012 |
| 8085831 | Interference control via selective blanking/attenuation of interfering transmissions Inter-sector interference for a target user in a sector may be controlled by selectively blanking or attenuating transmit powers for interfering users in neighboring sectors whenever their transmissions collide. The sector provides the frequency hopping (FH) sequenc... | 12/27/2011 |
| 8077755 | Multi-mode coexistence method for a multi-mode communication device The present invention discloses a multi-mode coexistence method of a multi-mode communication device comprising steps of: setting priorities of frequency usage for all modes supported by the multi-mode communication device; determining a channel where a signal of a ... | 12/13/2011 |
| 8031756 | Communication device, communication method, communication system and program A communication device of the present invention includes channel compensations, an adaptive processor, a MAC and a controller. The channel compensations weight each of signals received by a plurality of antennas based on an SN ratio of the received signals so as to ... | 10/04/2011 |
| 7957451 | Cognitive spectral sensor-based PN hopping/spreading sequence generator A spread spectrum communication system includes a transceiver configured to transmit a spread spectrum waveform. The spread spectrum waveform comprises transmitted signals at varying frequencies within a radio frequency spectrum of operation. The frequency variation... | 06/07/2011 |
| 7933310 | System for a fast frequency hopping radio The invention discloses a system (100) for a fast frequency hopping radio, and comprises a transmit part (110) and a receive part (120). Each of the receive (110) and transmit (120) parts comprise a unit (115, 125) for rando... | 04/26/2011 |
| 7924903 | Method and device for blind dehopping A method and device are disclosed for real-time characterization of frequency-hopping networks, in which the signal to be characterized is converted into a digital signal and the frequency characteristics of the signal are determined. A frequency hop is sought for s... | 04/12/2011 |
| 7920618 | Insertion of null packets to mitigate the effects of interference in wireless communications Mitigation of interference effects in certain wireless communications is accomplished by the disclosed method. A wireless communications device communicates utilizing a protocol which requires hopping from channel to channel within a communications frequency band wh... | 04/05/2011 |
| 7903718 | Enhanced 1-HOP dynamic frequency hopping communities A Dynamic Frequency Hopping Community (DFH Community) is formed from a plurality of Wireless Regional Area Network (WRAN) cells wherein each of the plurality of WRAN cells within the DFH Community is a one-hop neighbor of the leader cell. The leader cell sets and di... | 03/08/2011 |
| 7885313 | Method and apparatus for cooperative coexistence between wireless communication protocols A method and apparatus of reducing interference between subsystems implementing wireless communication protocols is disclosed. The method comprises reducing interference in a first subsystem implementing a first wireless communication protocol operating in a first f... | 02/08/2011 |
| 7873095 | Coordinated frequency hop jamming and GPS anti-jam receiver An anti-jam receiver for coordinating with a frequency hop jammer includes a receiver assembly for receiving a spread spectrum signal, and a processor for removing an undesired signal from the spread spectrum signal. The processor utilizes an anti-jam algorithm in t... | 01/18/2011 |
| 7860147 | Method of communicating and associated transmitter using coded orthogonal frequency division multiplexing (COFDM) A system and method communicates and generates a Coded Orthogonal Frequency Division Multiplexed (COFDM) communications signal as a plurality of subcarriers. Selected subcarriers are turned ON and OFF while also frequency hopping and spreading the selected ON subcar... | 12/28/2010 |
| 7860148 | Receiving circuit and receiving method A receiving circuit which receives information using a multi-carrier signal comprises a phase rotation amount calculator which calculates a phase rotation amount of a multi-carrier signal included in a first frequency band according to a pilot-sub carrier included i... | 12/28/2010 |
| 7856047 | System and method for concurrent frequency hopping of radio communications A method and system for selecting frequency channels for a concurrent dual transceiver system are provided. In one aspect, a single hop table for at least two transceivers is used. The single hop table tracks information associated with a plurality of frequency chan... | 12/21/2010 |
| 7835420 | Orthogonal resource block hopping multiplexing method and apparatus An orthogonal resource block hopping multiplexing (ORBHM) method and apparatus in a wired/wireless communication system in which a plurality of communication channels coexist in a single medium. The orthogonal resource block hopping multiplexing (ORBHM) communicatio... | 11/16/2010 |
| 7769074 | Detecting and synchronizing to frequency hopped packets Methods and systems for detecting and synchronizing to frequency hopped packets are presented. A technique for detecting a transmitter frequency hopping pattern includes receiving a packet of preamble symbols respectively transmitted over multiple frequency sub-band... | 08/03/2010 |
| 7733938 | Methods and apparatuses for channel assessment An embodiment of an apparatus for channel assessment is provided, comprising a radio frequency (RF) unit, a baseband unit and a microprocessor control unit (MCU). The baseband unit coupling to the RF unit directs the RF unit to selectively hop into one of a pluralit... | 06/08/2010 |
| 7729406 | Detection of process state change Detection of a process state change includes, in each of a number of filters having differing time constants, generating an estimated average process state from observed samples of the process. A number of state change decisions are generated by comparing each of th... | 06/01/2010 |
| 7724803 | Predictive collision avoidance in macrodiverse wireless networks with frequency hopping using switching A communication system using fast macrodiversity switching (FMS) and frequency hopping (FH) for wireless signals including downlink signals to and uplink signals from mobile stations. Frequency hopping sequences are determined for the uplink and downlink signals for... | 05/25/2010 |
| 7720129 | Frequency-hopping carrier generator The present invention discloses a frequency-hopping carrier generator, which comprises a current source, a ramp generator and a switch power amplifier. The current source generates a first current; the first current is output to the ramp generator. The output of the... | 05/18/2010 |
| 7711028 | Spectrum shaping using code-hopping CDMA A method for spectrally shaping a communication signal is provided. The method comprises generating a plurality of spreading codes, assigning a probability to each of the plurality of spreading codes, and modulating the communication signal by hopping between the pl... | 05/04/2010 |
| 7711027 | Wireless communication control method and wireless communication device A wireless communication control method of the present invention for wireless communication devices employing Adaptive Frequency Hopping that switches among a plurality of channels except a channel subject to interference by interference waves in a predetermined fre... | 05/04/2010 |
| 7701997 | Fast hopping frequency synthesizer using an all digital phased locked loop (ADPLL) A novel and useful fast hopping frequency synthesizer and transmitter associated therewith. The frequency synthesizer and transmitter incorporates a digitally controlled oscillator (DCO) adapted to operate open loop. Instantaneous frequency switching is achieved by ... | 04/20/2010 |
| 7684464 | Method and apparatus for performing channel assessment in a wireless communication system A system and method for classifying channels in a frequency hopping wireless communication system is provided. A data collection engine operates to obtain channel metrics indicating the level of interference for each channel used by the wireless communication system... | 03/23/2010 |
| 7660339 | Apparatus and method for estimating and correcting frequency offset in MB-OFDM UWB system using time frequency hopping Provided are an apparatus and method for estimating and correcting a frequency offset in a multiband-Orthogonal Frequency Division Multiplexing Ultra-Wideband system using a time frequency hopping. The method includes the steps of: calculating a tangent input having... | 02/09/2010 |
| 7653117 | Method for decoding digital data in a frequency hopping communication system An improved method is provided for decoding data in a frequency hopping communications system. The method includes: monitoring transition points between data bits in a demodulated data stream, where the data bits are transmitted to a receiver over different transmis... | 01/26/2010 |
| 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 to known values at a transmission start time and transmits a transmi... | 11/24/2009 |
| 7606291 | Method and system for transmit frequency hopping A mobile device (110) and combined method (400/500) for frequency hopping is provided. The frequency hopping can combine a receive scanning (400) with a scanning (500) for a transmit frequency for providing automated channel selection. Th... | 10/20/2009 |
| 7593450 | Dynamic frequency hopping A frequency hopping communications system is disclosed. A server is adapted to have one or more radio head interface modules and a call processing software module. The call processing software module performs modulation and demodulation of voice and data streams usi... | 09/22/2009 |
