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Polarization demultiplexing of optical signals
An example embodiment includes optical receiver that includes a polarization beam splitter (PBS), a polarization controller, and a forward error correction...
Optical transfer linearity using test tones
An optical system may have an optical transmitter including a digital signal processor to receive a signal channel, determine a digital signal associated with...
Nonlinear fourier analysis in optical systems
A receiver configured to receive wave packets encoded with data via a nonlinear channel is disclosed. The receiver includes an input configured to receive the...
Optical synthesizer tuning using fine and coarse optical frequency combs
Embodiments herein provide for an optical frequency synthesizer including a coarse optical frequency comb, a fine optical frequency comb, and an output laser....
Method and apparatus for transmitting and receiving client signal
Embodiments of the present invention provide a method and an apparatus for transmitting and receiving a client signal, and relate to the field of communications...
A multiplexer/demultiplexer that functions as an extremely small AWG optical filter in order to prepare a miniaturized and low-cost transceiver module necessary...
Apparatus and method for transmitting and receiving visible light
A visible light communication (VLC) transmitting apparatus modulates source data to an orthogonal frequency division multiplexing (OFDM) symbol according to an...
Optical converter with ADC based channelizer for optical LNB system
Systems and methods in accordance with embodiments of the invention convert satellite signals to an intermediate frequency signal and selecting modulated...
Information communication method
An information communication method is provided for transmitting a signal using a change in luminance. The method includes determining a pattern of the change...
Methods and devices for transmitting/obtaining information by visible
The present invention discloses methods and devices for transmitting/obtaining information by visible light signals. The method for transmitting information by...
Lighting device and receiver
There is provided a method and corresponding lighting device (100), and a receiver, which employs code modulation which provides a compatibility of code...
The invention relates to a laser system comprising a laser receiver collaborating with a laser emitter. The laser emitter is designed to provide a laser light...
Capturing device, capturing method, and capturing program
There have been problems that a capturing device requires an optical source having a large power output, and a scanning operation and a capturing operation must...
Balloon network with free-space optical communication between super-node
balloons and RF communication between...
Exemplary embodiments may involve hierarchical balloon networks that include both optical and radio frequency links between balloons. An exemplary network...
Minimizing polarization-dependent optical power for PM-M-QAM transmitters
A system is configured to determine a first power level of a first signal output from a first modulator, and determine a second power level of a second signal...
Optical line monitoring system and method
Disclosed is an optical line monitoring system and method which detects an optical line where a disorder occurs, by using an OTDR (Optical Time Domain...
Localized network repair systems and methods
A localized repair method in a network using a control plane includes, responsive to a failure on a local repair segment defined on a connection traversing the...
Optical network terminal with functions of detecting and recovering from
failures, blocking supplied power, and...
An optical network terminal with functions of detecting, recovering and blocking failures, and storing the information according to the present invention...
Systems and methods for radio node synchronization based on range
A radio node for updating a local timing parameter based on a message from a remote node includes a processing circuit and receiver. The receiver is configured...
Digital audio system of an aircraft
A digital audio system of an aircraft comprising one or more pieces of audio equipment and one or more pieces of radio equipment providing a reliable side tone...
Opportunistic content delivery using delta coding
Systems and methods are described for avoiding redundant data transfers using delta coding techniques when reliably and opportunistically communicating data to...
Outdoor digital modulator system for use with a linear radio, and a method
A communication system, an apparatus and a method for communicating with a radio disposed in an outdoor unit are provided. The apparatus including: a...
Process for generating a mapping of the transmission or reception coverage
of an antenna of a ground station...
A process for measuring antenna gains of a transmitter for generating at least one radiation pattern of the antenna, the process including a plurality of...
Dual-satellite emergency locator beacon and method for registering,
programming and updating emergency locator...
A dual-satellite emergency locator beacon and method for programming and updating such emergency locator beacons over the air. The system uses a second...
Wireless repeater with arbitrary programmable selectivity
The invention relates to wireless repeater systems and methods. In embodiments, such systems and methods involve receiving a wireless transmission signal; and...
Radio communication system, base station, relay station, and radio
A base station which is able to perform radio communications with a relay station and a mobile station, the base station includes a transmitter configured to...
Polarization-angle-division diversity wireless transmitter, wireless
receiver, and wireless communication system
A wireless transmitter has a modulator modulating an information signal of a frequency f1 by a carrier wave of a frequency f2 to output a first modulated...
Communication overhead reduction apparatus, systems, and methods
An apparatus and a system, as well as a method and article, may operate to transmit a first number of training symbols corresponding to a first number of...
Uplink multi-user multiple input multiple output beamforming
As part of a beamforming training procedure, a first communication device transmits a beamforming training packet. The first device then receives a plurality of...
Codebook sub-sampling for CSI feedback on PUCCH for 4Tx MIMO
Channel state information (CSI) feedback in a wireless communication system is disclosed. User equipment transmits a CSI feedback signal via a Physical Uplink...
Efficient feedback transmission method in multi-antenna wireless
communication system and device for same
The present invention relates to a method by which a terminal feeds back channel state information for downlink transmission in a wireless communication system...
Method for transmitting a downlink signal in a base station cooperative
wireless communication system and an...
The present invention relates to a method for determining a precoding matrix for downlink signal transmission in a base station cooperative wireless...
Method and apparatus for mitigating downlink interference
A wireless device transmits downlink interference-related information to a transmission point. The wireless device generates this information by listening to...
Protocol for MU MIMO operation in a wireless network
Various embodiments of the invention may modify the techniques used in conventional networks, to achieve techniques that are better suited for networks that use...
Methods and devices for uplink diversity transmission
A user equipment transmits using at least two uplink transmit antennas and receives a set of control signals in the downlink direction from a cellular network....
Method and apparatus for lattice reduction with reduced computational
Provided is a method and apparatus for lattice reduction with reduced computational complexity. The apparatus and method include calculating an R matrix using...
Monotonic optimization method for achieving the maximum weighted sum-rate
in multicell downlink MISO systems
A monotonic optimization method is for achieving the maximum weighted sum-rate in multicell downlink MISO systems. It belongs to the wireless communications...
Antenna array structure with differing antennas
An antenna array structure includes a plurality of antennas, wherein a first antenna has a first geometric shape, provides a first radiation pattern, and has a...
Antenna systems and methods for massive MIMO communication
Antenna systems and methods for Massive Multi-Input-Multi-Output (MIMO) (M-MIMO) communication are provided. Antennas systems include a M-MIMO transmitter...
Apparatus and method for beamforming gain difference compensation
according to change of transmitting and...
A method of operating a Mobile Station (MS) in a wireless communication system using beamforming includes receiving a reference signal over a plurality of...
Method and wireless communication device for using an antenna as a sensor
device in guiding selection of...
A method and system performs antenna tuning using detected changes in antenna self-capacitance in a wireless communication device. A modem detects changes in...
Reduced jamming between receivers and wireless power transmitters
Exemplary embodiments are directed to reducing jamming caused by radiated fields generated by wireless power transmitters. Exemplary embodiments include...
Inductive coupling for battery sharing and multi-function inductive
A mobile device includes a housing and an antenna. The mobile device further includes a power-receiving circuit, and power-transmitting circuit, and a...
System and method of providing communications in a wireless power transfer
A communication system that uses keyed modulation to encode fixed frequency communications on a variable frequency power transmission signal in which a single...
NFC device with configurable notifications
The present invention relates to a near field communication device configured to establish a near field communication channel with an external device, and...
Mobile terminal, home appliance and method for operating the same
A mobile terminal, a home appliance and a method for operating the same are disclosed. The method for operating the mobile terminal includes displaying a...
Secure near field communication solutions and circuits
A device includes a near field communication (NFC) circuit that is configured and arranged to communicate data with external devices. An internal communication...
Communication method between a dual interface NFC card inserted into an
NFC terminal, and an NFC device
The present invention relates to a contactless communication method between an NFC card with a contact and contactless dual interface, installed in a...
Wireless power for chargeable and charging devices
Exemplary embodiments are directed to wireless power. A method may comprise detecting one or more transmit elements positioned within an associated charging...
Method and apparatus for three-phase power line communications
Method and apparatus for generating a balanced three-phase power line communication signal. In one embodiment, the method comprises generating a plurality of...