Abstract: A system is described for transmitting a communication signal between power lines. The system includes: a transmitter which outputs an OFDM or an FM-OFDM signal at a radio frequency greater than 200 MHz; a first power line which receives the OFDM or the FM-OFDM signal from the transmitter and radiates the OFDM or the FM-OFDM signal from a conductor of the first power line; a second power line which wirelessly receives, by a conductor of the second power line, the OFDM or the FM-OFDM signal radiated from the first power line, and a receiver connected to the second power line which receives the OFDM or the FM-OFDM signal from the second power line.

Abstract: There is provided apparatus for propagation of a wireless signal through a barrier comprising a first antenna for location on a first side of the barrier, a second antenna for location on a second side of the barrier and a waveguide. The waveguide comprises a conducting member passing through the barrier between the first and second sides. The conducting member is held within an insulator sleeve such that it is spaced from a surrounding metal wall of the waveguide. A wireless signal received by the waveguide on the first side of the barrier is transmitted through the barrier by Transverse Electro-Magnetic (TEM) mode propagation along the waveguide is re-radiated on the second side.

Abstract: A first network node of a cellular system is configured for communication with a second network node over a twisted pair wire. The first network node includes a receiver for receiving, over the twisted pair wire, an intermediate frequency signal from the second network node, which intermediate frequency signal has been converted from a high frequency signal having a frequency higher than the frequency of the intermediate frequency signal by the second network node, and a down-converter for converting the intermediate frequency signal to a low frequency signal having a frequency lower than the frequency of the intermediate frequency signal. The first network node also includes an up-converter for converting a received low frequency signal to an intermediate frequency signal having a frequency higher than the frequency of the low frequency signal.

Abstract: A control system for a vehicle subsystem (10) comprises a controller (12) arranged to control operation of the subsystem (10), a user input (16) connected to the system controller (12) and arranged to be operated by a user, and a sensor comprising a transmitter (22) associated with user input (16) and a receiver (26) associated with a first user, whereby the controller uses detection of a signal from the transmitter (22) by the receiver (26) to distinguish between operation of the user input (16) by said first user and operation of the user input by a second user.

Abstract: A multi-mode convergence method, a multi-mode combination method, and devices thereof are provided. The multi-mode convergence method includes the following steps. Data from multi-mode base band units (BBUs) is received and separated into downlink service data and operation maintenance data. A channel configuration is generated according to the operation maintenance data. The downlink service data of a corresponding mode is selected according to the channel configuration, and the downlink service data and the operation maintenance data are consolidated, and the consolidated data is sent to corresponding remote radio unit (RRUs). The multi-mode convergence method, the multi-mode combination method, and devices thereof are adopted, so as to accomplish functions, such as multi-mode and pseudo noise (PN) multiplexing, to decrease complexity of a multi-mode system, and provide a function of multi-mode coexistent optical fiber.

Abstract: A two conductor hard wired communications link accepts an actual value of at least one parameter of interest from an environmental sensor in the form of data encoded on the conductors via current modulation. The sensor is mounted in a location remote from an irrigation controller. A circuit connected to the sensor transmits an RF signal representing an actual value of a parameter of interest detected by the sensor. A data relay is connected to the hard wired communication link of the irrigation controller. The data relay includes a receiver that receives the RF signal, and circuitry configured to extract the actual value of the parameter of interest and emulate a predetermined set of physical and protocol properties of the hard wired communication link of the irrigation controller.

Abstract: One embodiment is directed to a system for use with a coverage area in which one or more wireless units wirelessly transmit using a wireless radio frequency spectrum. The system comprises a first unit, and a plurality of second units communicatively coupled to the first unit using at least one communication medium. Each of the plurality of second units generates respective digital RF samples indicative of a respective analog wireless signal received at that second unit. Each of the plurality of second units communicates the respective digital RF samples generated by that second unit to the first unit using the at least one communication medium. The first unit digitally sums corresponding digital RF samples received from the plurality of second units to produce summed digital RF samples. The system is configured so that an input used for base station processing is derived from the resulting summed digital RF samples.

Abstract: The present invention relates to a transfer system for providing wireless data transfer, electrical power transfer and navigation between a mobile subsea vehicle and a deployed subsea station that uses acoustic and electromagnetic carrier signals for wireless communication and navigation. An inductive connector is provided for power transfer between mobile subsea vehicle and a deployed subsea station without conductive contact.

Abstract: For one disclosed embodiment, an integrated circuit may comprise an internal transmission line in one or more layers of the integrated circuit. The internal transmission line may be coupled to receive a signal from an external transmission line at a first end of the internal transmission line without use of termination circuitry. The internal transmission line may transmit the signal passively to a second end of the internal transmission line. The integrated circuit may also comprise first circuitry having an input coupled to the internal transmission line at a first location of the internal transmission line to receive the signal and second circuitry having an input coupled to the internal transmission line at a second location of the internal transmission line to receive the signal. The second location may be different from the first location. Other embodiments are also disclosed.

Abstract: A two conductor hard wired communications link accepts an actual value of at least one parameter of interest from an environmental sensor in the form of data encoded on the conductors via current modulation. The sensor is mounted in location remote from an irrigation controller. A circuit connected to the sensor transmits an RF signal representing an actual value of a parameter of interest detected by the sensor. A data relay is connected to the hard wired communication link of the irrigation controller. The data relay includes a receiver that receives the RF signal, and circuitry configured to extract the actual value of the parameter of interest and emulate a predetermined set of physical and protocol properties of the hard wired communication link of the irrigation controller.

Abstract: A repeater system is disclosed including a dual-fed donor patch antenna with a first microstrip antenna probe and a second microstrip antenna probe, phase shifting circuitry connected to the first microstrip antenna probe and the second microstrip antenna probe, wherein the phase shifting circuitry is configured to receive an input signal, supply a first signal to the first microstrip antenna probe, and supply a second signal to the second microstrip antenna probe using the input signal such that the first signal and the second signal are approximately 180 degrees out of phase with respect to each other. The repeater system also includes a coverage antenna (either a patch antenna or dipole antenna) and a housing connecting the dual-fed donor patch antenna and the coverage antenna. The housing is disposed to serve as a ground plane for the donor patch antenna and the coverage antenna.

Abstract: A magnetic induction (MI) repeater includes first and second coils configured to have the same resonance frequency and to be substantially isolated from one another, and an amplifier connected to the first and second coils and configured to receive a signal induced in the first coil by a first magnetic field and output, via the second coil, a second magnetic field based on the signal, wherein the second magnetic field is amplified relative to the first magnetic field.

Abstract: A network architecture for underground communication using redundant interconnected communication systems utilizes an aboveground master control station to send a status request message to a belowground gateway. The gateway may then, in turn, broadcast a status request message to a plurality of communication hubs located throughout an underground region using each of a plurality of potentially available communication systems. In the event that one of the communication hubs fails to respond over the then-current communication system, the master control station may switch the current communication system being used to a truly available system.

Abstract: The present invention relates to a system that provides underwater data transfer between two remote client systems via an underwater cabled network operable. The cabled network includes at least two data access points each having an access point electromagnetic transceiver; and each remote client system comprising a client electromagnetic transceiver. Each data access point is operable to transfer data between said cabled network and one of said client electromagnetic transceivers via one of inductive magnetic and electromagnetic signals carried through the water.

Abstract: A two conductor hard wired communications link accepts an actual value of at least one parameter of interest from an environmental sensor in the form of data encoded on the conductors via current modulation. The sensor is mounted in location remote from an irrigation controller. A circuit connected to the sensor transmits an RF signal representing an actual value of a parameter of interest detected by the sensor. A data relay is connected to the hard wired communication link of the irrigation controller. The data relay includes a receiver that receives the RF signal, and circuitry configured to extract the actual value of the parameter of interest and emulate a predetermined set of physical and protocol properties of the hard wired communication link of the irrigation controller.

Abstract: A communications signal repeater apparatus (106, 110, 114, 118) is disclosed which is configured to receive a communications signal from a cable network 105. The communications apparatus is further configured to delay the communications signal by a delay period relative to a delay parameter and configure the delayed communications signal for transmission over a radio communications channel. The delayed communications signal is converted to a radio signal and output to antenna (108, 112, 116, 120) for transmission over the air. A communications system incorporating communications apparatus is also disclosed.

Abstract: A system includes at least one adaptive filter coupled to a first communication channel and at least one other communications channel. The at least one adaptive filter includes at least one set of adaptive filter coefficients. A memory stores at least one predetermined set of filter coefficient thresholds. The filter coefficient thresholds may be indicative of channel faults, channel to channel faults or a length of the channel. A controller is configured to compare the set of filter coefficients to the predetermined set of filter coefficient thresholds. The controller is configured to determine the information about the channels based on compare results.

Abstract: The present invention relates to a system that provides underwater data transfer to an underwater communications network operable to carry a high bandwidth multiplexed data stream. The cabled network includes at least one data access point having an access point electromagnetic transceiver; and at least one remote client system comprising a client electromagnetic transceiver. The at least one data access point transfers data between said cabled network and said client electromagnetic transceiver via one of inductive magnetic and electromagnetic signals carried through the water.

Abstract: A digital radio frequency transport system that performs bi-directional simultaneous digital radio frequency distribution is provided. The transport system includes a digital host unit and at least two digital remote units coupled to the digital host unit. The bi-directional simultaneous digital radio frequency distribution is performed between the digital host unit and the at least two digital remote units.

Abstract: A receiver circuit which can suppress a voltage amplitude appearing on a transmission line. The receiver circuit, coupled to a first and a second transmission lines which transmit information by using currents, includes a first and a second current sources, a first and a second conversion sections which convert currents which flow respectively therein to voltages, a first transistor whose source is coupled to the first current source and to the first transmission line, and whose drain is coupled to the first conversion section, and a second transistor whose source is coupled to the second current source and to the second transmission line, and whose drain is coupled to the second conversion section. The gate and the drain of the first transistor are respectively coupled to the drain and the gate of the second transistor.

Abstract: A data transmission system transmitting data using a relay is provided. The relay selects a transmission terminal from a plurality of terminals connected to a base station. During a first time slot, the base station transmits base station data to the relay and the transmission terminal transmits terminal data to the relay. The relay transmits the terminal data to the base station and transmits the base station data to the transmission terminal during a second time slot.

Abstract: A system for enabling the wireless use and billing for that use of any of a wide variety of different manufacturers personal, ground-position-indicating enabled, wireless electronic rf communication devices in a zone, and a network outside of the zone.

Abstract: A system for calibrating operation of integrated differential signal receiver circuitry mounted on a substrate and coupled via surface conductors to edge mounted interface electrodes in which compensation is provided for variances among the resistances of the surface conductors.

Abstract: Provided is an on-channel repeater, which includes a receiver for receiving radio frequency (RF) signals; a subtractor for subtracting replica from the RF signals to thereby produce output signals of the subtractor; a repeating process unit for performing a repeating process onto the output signals of the subtractor; and a replica generator for calculating replica based on the output signals of the subtractor and the signals obtained after repeating process performed thereon and feeding the replica back to the subtractor.

Abstract: The present invention relates to a system that provides flexible data access to a wired underwater communications network through an electromagnetic, non-conductive connection. An underwater data access point is described wherein data access to a cabled network is provided through an electromagnetic connection. An inductive connector system may also be provided to allow transfer of data and/or power between a data access point and a client system.

Abstract: For one disclosed embodiment, an integrated circuit may comprise an internal transmission line in one or more layers of the integrated circuit. The internal transmission line may be coupled to receive a signal from an external transmission line at a first end of the internal transmission line without use of termination circuitry. The internal transmission line may transmit the signal passively to a second end of the internal transmission line. The integrated circuit may also comprise first circuitry having an input coupled to the internal transmission line at a first location of the internal transmission line to receive the signal and second circuitry having an input coupled to the internal transmission line at a second location of the internal transmission line to receive the signal. The second location may be different from the first location. Other embodiments are also disclosed.

Abstract: A wireless communication system (20) includes a base station (22) that is capable of communicating with a plurality of intermediate cells (24, 60). Each intermediate cell (24, 60) directly communicates with a plurality of end users (26, 64). Communications from an end user (26, 64) may be routed through the intermediate cell to a wireless network (30) associated with the base station (22) or directly to another intermediate cell in a disclosed example. The intermediate cells communicate with the base station on behalf of the end users such that the wireless network recognizes the intermediate cell as a single user and, in one example, assigns temporary listed directory numbers to each of the end users associated with each intermediate cell so that communications from each end user may be handled individually.

Abstract: An encoder encodes sound data and the like to generate a binary signal. A mapper converts the binary signal into a four-level symbol and outputs the four-level symbol. A base band filter includes a root raised cosine filter and a sinc filter. The base band filter blocks a predetermined frequency component of a symbol to shape the symbol into a waveform signal and outputs the waveform signal shaped. An FM modulator transmits a signal subjected to FM modulation according to a magnitude of an amplitude of a waveform signal to a receiving unit. When a symbol of ±3 is outputted from the mapper, a frequency shift of a signal transmitted from the FM modulator has a predetermined value in a range of ±0.822[kHz] to ±0.952[kHz]. This makes it possible to provide a modulating apparatus, a mobile communication system, a modulating method, and a communication method that use a modulating method that can conform to the FCC rule to be enforced in 2005 without using a linear power amplifier.

Abstract: A hot spot system for permitting wireless communication for a wide variety of various manufacturers different wireless personal communication devices in an rf restricted environment, wherein the different wireless personal communication devices each have a radiative antenna, and wherein the hot spot system is arranged to permit wireless, controlled communication between a wide variety of various manufacturers of different personal communication devices located within the rf restricted environment and other communication devices located outside of the rf restricted environment.

Abstract: Embodiments of the present disclosure disclose a wireless base station and a method for receiving a signal of the wireless base station. The wireless base station includes a base station indoor apparatus and a base station outdoor apparatus. The base station outdoor apparatus includes an adapter, a terrestrial service antenna, and a satellite antenna. The terrestrial service antenna is a microwave transmission antenna or a wireless access antenna. The base station indoor apparatus includes a satellite signal processing module configured to obtain a satellite service signal by decoding on a satellite radio-frequency signal received by the satellite antenna. The satellite antenna and the terrestrial service antenna are connected to the adapter. The adapter is configured to couple a signal received by the satellite antenna and a signal received by the terrestrial service antenna, and transfers a coupled signal to the base station indoor apparatus through a first data line.

Abstract: Aspects of a method and system for frequency-shift based chip-to-chip communications may include receiving and/or generating modulation control information and demodulation control information within a chip comprising one or more receivers and one or more transmitters. One or more modulation frequencies may be adjusted and utilized to generate transmit signals by the one or more transmitters based on the received modulation control information, wherein the one or more modulation frequencies may be distinct. One or more demodulation frequencies may be adjusted and utilized to generate intermediate frequency signals by the one or more receivers based on the received demodulation control information wherein the one or more demodulation frequencies may be distinct. The modulation control information and the demodulation control information may be received via a communication device comprising said chip.

Abstract: A cable system comprises a main line carrying first RF signals for a plurality of subscribers, and a subscriber line coupled with the main line and carrying the first RF signals between the subscriber's facility and the main line and also carrying second RF signals that are different in frequency from the first RF signals. The system further comprises a rectifier/voltage multiplier connected to the subscriber line for converting AC energy in the second RF signals into DC current, and an active RF device powered by the DC current from the rectifier/voltage multiplier, the RF device being located along the subscriber line. The system can include a filter connected between the subscriber line and the rectifier/voltage multiplier for filtering the second RF signals. The rectifier/voltage multiplier can be located either inside or outside the subscriber's facility.

Abstract: An improved system and method for implementing Multimedia Broadcast/Multicast Service (MBMS) handover during download delivery. Various embodiments of the present invention involve the use of the HTTP/1.1 “chunked” mode to deliver updates of the file delivery table (FDT) of a session in a push-like mode. In order to allow for push delivery of the contents of a FLUTE session, each FDT instance is encoded as one part of a multipart MIME message and is sent as a separate chunk. The receiver can interpret each of the separate chunks to extract the FDT instance from the chunks. The content type of each part of the message is set to “text/xml” or another MIMI type in order to indicate that the content is an FDT instance. After parsing the FDT instance and updating the FDT, the receiver is able to identify which files of the session are of interest and can perform a HTTP GET request to retrieve a specific file.

Abstract: The present embodiments relates to wireless adaptors. In one embodiment, a method is provided. The method may include obtaining an adaptor-device identification that identifies both a wireless adaptor and a wired device coupled with the wireless adaptor; and communicating with a network device via a wireless network using the adaptor-device identification, the wired device being distinguishable from other wired devices using the adaptor-device identification.

Abstract: A relaying method and system in a communication system having a Base Station (BS), a Mobile Station (MS) for communicating with the BS, and a Relay Station (RS) for relaying signals between the BS and the MS are provided. In the relaying method and system, the BS generates a BS pilot sequence and transmits the generated BS pilot sequence to the RS. wherein a partial cross correlation between the BS pilot sequence and an RS pilot sequence, being the BS pilot sequence relayed by the RS is always ‘0’. Accordingly, system capacity is more efficiently utilized.

Abstract: The present invention concerns a system for high frequency signal transmission in power line networks and also concerns signal hubs and repeaters to be used in such systems. The primary aim of the invention is to provide a communication system of a general type wherein the isolation between high frequency input and output signals is maintained. The hubs and repeaters are designed to be easily installed in the network. Radio and wireless links at subscriber nodes are also parts of the system.

Abstract: The present invention comprises a docking system for connecting a portable communication device to a further signal transmission line. The docking system may be arranged within a workstation such as a desk or a tray. The system may also envelope a room in a building or be located in a vehicle, to control and restrict the radiative emission from the communication device and to direct such radiation to a further remote antenna and or signal distribution system connected to the transmission line.

Abstract: A vehicle monitoring system which may easily identify information transmitted from each of detecting devices without registration of identification information of the detecting devices and a transponder thereof are provided. A display is disposed in a distal end of the transponders all connected in series through a cable. Each of the detecting devices detects conditions in a predetermined portion of a vehicle and transmits vehicle information including measurement results, its own identification information and the number of transmissions. Each of the transponders determines whether the vehicle information transmitted from the detecting devices is received or not based on the identification information of the detecting devices registered in advance, and transmits the vehicle information to the transponder connected to the transmitting side or the display, when it determines that the vehicle information is to be received.

Abstract: A transmitter (200) includes a plurality of amplifier “n” stages (202, 204, 206) providing predetermined gain stages and a plurality of filters (208, 210). Each filter (208, 210) is distributed between each gain stage (202, 204) (204, 206) so as to reject far out noise in accordance with the gain stage preceding that filter.

Abstract: A diversity apparatus includes a transceiver, a phase shifter which switches phases of a carrier wave transmitted from the transceiver, and a leakage transmission path which transmits the carrier wave output from the phase shifter. The transceiver switches a phase of the phase shifter depending on a receiving level.

Abstract: An underground power line is coupled to an overhead power line at a riser pole. In a power line communication system, a first and a second communication device are communicatively coupled to the underground power line at different locations. A third communication device is located in the vicinity of the riser pole. The third communication device is coupled to one of either the underground power line or the overhead power line. The first communication device is configured to transmit data received from said second communication device for reception by said third communication device. The third communication device may include a backhaul link for communicating via a non-power line medium, such as to an upstream node or aggregation point coupled to an IP network.

Abstract: A wide area network is constructed by connecting a plurality of bases to a multipoint switching apparatus. Each base has a certain contracted communication band. If a packet is received from a first base having a higher contracted communication band and the packet is directed to a second base having a lower contracted communication band, the traffic from the first base is limited to the contracted communication band of the second base.

Abstract: Apparatus and method for multi-tasking in mobile terminal having multimedia processor for video-on-demand (VOD) services that identifies port of each data received during use of VOD service and processes data to enable user to implement any other network application program simultaneously with use of VOD service. Method provided includes setting port number for VOD services of multimedia processor and accessing VOD server when demand for VOD services is received, processing VOD data received through the set port number to deploy VOD services, determining whether port number of data received during VOD services is identical to the set port number. When the port number of the received data is identical to the set port number, recognizing received data as VOD data to deploy VOD services, when not, recognizing received data as general data and sending it to MSM from the multimedia processor, and processing general data sent to the MSM.

Abstract: A dynamic arrangement for reducing the presence of ingress noise in the upstream signal path of a two-way cable system utilizes a variable attenuation element and amplifier disposed along the upstream signal path. The amplifier includes a bypass switch so that the amplifier may be switched in to or out of the upstream path. A signal processor associated with the communications gateway functions to calculate the upstream loss present at the gateway and control the operation of the attenuation element, amplifier and bypass switch accordingly. Upstream attenuation is selected to be as large as possible, yet still allow in-building cable devices to communicate with their associated head end (HE) receiver equipment, after accounting for maximum transmit limitations.

Abstract: An encoder encodes sound data and the like to generate a binary signal. A mapper converts the binary signal into a four-level symbol and outputs the four-level symbol. A base band filter includes a root raised cosine filter and a sinc filter. The base band filter blocks a predetermined frequency component of a symbol to shape the symbol into a waveform signal and outputs the waveform signal shaped. An FM modulator transmits a signal subjected to FM modulation according to a magnitude of an amplitude of a waveform signal to a receiving unit. When a symbol of ±3 is outputted from the mapper, a frequency shift of a signal transmitted from the FM modulator has a predetermined value in a range of 0.822 [kHz] to 0.952 [kHz]. This makes it possible to provide a modulating apparatus, a mobile communication system, a modulating method, and a communication method that use a modulating method that can conform to the FCC rule to be enforced in 2005 without using a linear power amplifier.

Abstract: There is provided a relay unit disposed between a mobile terminal that is a sound source and an earphone for outputting sound. The relay unit preferably wirelessly transmits/receives audio data to/from the mobile terminal and preferably transmits an operation signal to the mobile terminal. A headset is attached to the relay unit. The headset can be used as a wireless headset through Bluetooth communication with the mobile terminal. On the other hand, when the mobile terminal receives a digital mobile broadcast, the relay unit is connected to the mobile terminal via a shielded cable that also operates as a broadcast receiving antenna. Furthermore, while the relay unit is connected to the mobile terminal via a cable, a circuit driving battery included in the relay unit is charged.

Abstract: An integral high frequency communication apparatus comprises a case, a waveguide apparatus having an extension portion, and a transceiver module having two waveguide openings. The transceiver module having two waveguide openings is retained in the case. The case has an opening through which the extension portion extends outside of the case. The integral high frequency communication apparatus can receive and transmit high frequency signals by the extension portion.

Abstract: A method and device for providing brochures to interested parties using cellular communication devices such as cellular telephones, cellular enabled digital devices and the like. An access number which may be contacted by a cellular communication device is provided in an advertisement of an item, the access number being a short code, telephone number or the like. An active seeker device continuously receives messages sent to the access number, then a database of information is consulted and an informational message sent to the caller. The informational message may be an SMS text message, a photograph of the item, an opt-in message to receive further information, and combinations thereof. Items may include any object or estate commonly advertised for sale or lease, such as real estate, vehicles, consumer products and the like.

Abstract: An booster/amplifier receives a plurality of RF signals, including a subject RF signal. A location-based signal spectrum is determined by performing either a frequency scan or an information lookup operation. An initial filter bandwidth for the booster/amplifier is set based at least in part on the determined signal spectrum and a target time delay interference. In one embodiment, the initial filter bandwidth is set such that both the TDI and ACI are optimized/minimized. The initial filter bandwidth subsequently may be adjusted from its initial value based on actual measured ACI and/or TDI values.

Abstract: A signal conditioner (SC) and method for performing communications via a shared transport medium between a base transceiver station (BTS) and a remote antenna entity (RAE). A first SC is connected to the BTS and a second SC is connected to the RAE. Each SC interfaces to the transport medium. The first SC receives an RF signal representing a combined digital signal (CDS) from the BTS. The first SC recovers and conditions the CDS, and then transmits the conditioned CDS to the second SC via the transport medium. The second SC receives the conditioned CDS, recovers the CDS, produces an RF signal representing the CDS, and transmits this RF signal to the RAE. The RAE sends this RF signal to an antenna of the RAE for transmission of this RF signal via the antenna. First SC and second SC also facilitate communication of a CDS from RAE to BTS.