Class / Patent application number | Description | Number of patent applications / Date published |
455017000 | Plural modulated carriers | 13 |
20080207119 | WAVEFORM MODULATED WIRELESS RURAL AREA NETWORK (WRAN) SYSTEMS AND MODULATION AND MULTIPLE ACCESS TECHNIQUES FOR WIRELESS COMMUNICATION SYSTEMS - A method and system for transmitting data in a wireless network. The method includes generating a plurality of waveforms corresponding to a plurality of frequency subbands for a predetermined frequency band. The predetermined frequency band is divided into a plurality of groups of subbands, and the plurality of groups of subbands being divided into the plurality of frequency subbands. Additionally, the method includes receiving a data signal, processing information associated with the received data signal, modulating the plurality of waveforms based on at least information associated with the received data signal, and transmitting the modulated plurality of waveforms. Any two of the plurality of waveforms are substantially orthogonal to each other. Each of the plurality of waveforms corresponds to a waveform frequency spectrum associated with a spectral amplitude as a function of a frequency. | 08-28-2008 |
20080227388 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING DATA USING MULTI-USER SUPERPOSITION CODING IN A WIRELESS RELAY SYSTEM - A method and apparatus for joint unicast using multi-user superposition coding in a wireless relay system are provided. A BS superposition-encodes first and second data messages directed to first and second MSs, respectively, scheduled at a current scheduling instant. The first and second data messages carry first and second information bit streams for the first and second MSs, respectively. The first MS has a relatively good direct link to the BS, and the second MS has a relatively bad direct link to the BS. The superposition-coded data is transmitted to the first MS and an RS connected between the BS and the first and second MSs. The RS receives the superposition-coded data from the BS, extracts the second information bit stream by decoding the superposition-coded data, and transmits a third data message carrying the second information bit stream to the first and second MSs. | 09-18-2008 |
20090247075 | METHOD AND SYSTEM FOR A LOW-COMPLEXITY MULTI-BEAM REPEATER - Aspects of a method and system for a low-complexity multi-beam repeater may include receiving one or more information signals at one or more receiver antennas, and receiving one or more local oscillator control signals via an out-of-band link. The one or more received information signals may be demodulated to one or more intermediate-frequency signals via one or more frequency carrier signals, wherein the frequency carrier signals may be controlled by the one or more received local oscillator control signals. One or more intermediate-frequency signals and/or one or more signals generated from the one or more intermediate-frequency signals may be modulated to one or more radio-frequency signals via the one or more frequency carrier signals. One or more transmit signals comprising at least one of the one or more radio-frequency signals may be transmitted via one or more transmit antennas. | 10-01-2009 |
20100136903 | DATA TRANSMISSION SYSTEM FOR TRANSMITTING DATA VIA RELAY HAVING MULTIPLE ANTENNAS - Disclosed is a data transmission system that transmits data using a relay. During a first time slot, a base station may transmit base station data to the relay, and a mobile station may transmit mobile station data to the relay. During a second time slot, the relay may transmit the mobile station data to the base station, and transmit the base station data to the mobile station. | 06-03-2010 |
20110070822 | USER GROUP SPECIFIC BEAM FORMING IN A MOBILE NETWORK - The present disclosure relates to a radio system ( | 03-24-2011 |
20110070823 | RELAY COMMUNICATION SYSTEM AND A METHOD FOR TRANSMITTING DATA IN THE SAME SYSTEM - A relay communication system and a method for transmitting data in the same system, wherein the method for transmitting data comprises: a relay station notifying a transmitting terminal and a receiving terminal of air interface resources which are required when the transmitting terminal transmits data and when the receiving terminal receives the data (S | 03-24-2011 |
20110159807 | ACTIVE ANTENNA SYSTEM FOR A MOBILE COMMUNICATIONS NETWORK AS WELL AS A METHOD FOR RELAYING A PLURALITY OF RADIO SIGNALS THROUGH THE ACTIVE ANTENNA SYSTEM - An active antenna system and a method for relaying radio signal in the mobile communications network is disclosed. The active antenna system comprises a plurality of antenna elements for relaying radio signals at a first frequency band. The antenna elements are connected to a plurality of signal paths. A plurality of signal inputs for inputting radio signals at a second frequency band is connected to the signal paths. A plurality of first mixers in the signal paths converts the frequency of the radio signals between the first frequency band and the second frequency band. A single first local oscillator is connected to the first mixers through a first oscillator signal path and supplies first oscillator signals to the first mixers and at least one dispersion element is connected to at least one of the signal paths. | 06-30-2011 |
20110275313 | Systems And Methods For Forwarding A Multi-User RF Signal - A dynamic frequency translating repeater operating in a mobile communications system is operable to receive a multi-user signal and perform time-varying and user-specific frequency shifting in the repeater signal. The dynamic frequency translating repeater may further perform user subcarrier specific dynamic frequency translation. Different mobile stations may be allocated different frequency shift amounts based on the interference environments, resource allocations, and scheduling constraints particular to each mobile station. | 11-10-2011 |
20120164942 | ELECTROMAGNETIC PATCH ANTENNA REPEATER WITH HIGH ISOLATION - 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. | 06-28-2012 |
20120289150 | DATA TRANSMISSION SYSTEM FOR FORWARDING DATA USING A PLURALITY OF ANTENNAS - 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. | 11-15-2012 |
20120302161 | Signal Repeater With Gain Control And Spatial Isolation - A repeater device may be utilized to enable forwarding extreme high frequency (EHF) communication between EHF-enabled wireless devices. The repeater device may utilize spatial isolation to prevent and/or reduce interference between received and transmitted EHF RF signals, wherein reception and/or transmission of EHF RF signals in the repeater device may be performed via narrow beams that may enable minimal interference by transmit EHF RF signals to reception of EHF RF. The repeater device may utilize phased arrays to enable performing beamforming, and signal processing operations, including shift and/or amplitude adjustment, may be performed on signals received and/or transmitted via antenna elements in the phased arrays to enable beamforming during reception and transmission of EHF RF signals. Signal processing operations performed in the repeater device may be modifiable to enable continued spatial isolation between receive and transmit EHF RF signal in the repeater device. | 11-29-2012 |
20140162548 | RELAY APPARATUS FOR BROADCAST WAVES - The objective of the present invention is to provide a relay apparatus capable of performing normal relay transmission for broadcast waves by preventing effects caused by wraparound in a relay apparatus. For broadcast waves received by a relay apparatus ( | 06-12-2014 |
20160028469 | MULTIPLE-PORT SIGNAL BOOSTERS - A system is disclosed that includes a first interface port, a second interface port, a signal splitter device, a main booster, and a front-end booster. The signal splitter device may include first, second, and third splitter ports. The signal splitter device may be configured such that a first direction signal received at either of the second and third splitter ports is output at the first splitter port and a second direction signal that is received at the first splitter port is output at each of the second and third splitter ports. The main booster may include main first and second direction amplification paths that are each communicatively coupled between the first splitter port and the first interface port. The front-end booster may include front-end first and second direction amplification paths that are each communicatively coupled between the second splitter port and the second interface port. | 01-28-2016 |