A method and apparatus for transmitting and receiving signals in a wireless communication system, according to an embodiment of the present invention, may comprise a feature of applying a phase pattern to a wavefront of an optical signal and a feature of transmitting the optical signal. The phase pattern may be determined on the basis of an optical phase shift characteristic of a phase mask, and the phase mask may be determined on the basis of a quantization order and a phase order.

This application provides information transmission methods and apparatuses. In an implementation, a method comprising determining a data packet, wherein the data packet comprises a first information sequence and a second information sequence, the first information sequence comprises source information, the second information sequence comprises partial source information of the source information for performing luminance control on a light source, and outputting the data packet by using the light source.

This application provides information transmission methods and apparatuses. In an implementation, a method comprising determining a data packet, wherein the data packet comprises a first information sequence and a second information sequence, the first information sequence comprises source information, the second information sequence comprises partial source information of the source information for performing luminance control on a light source, and outputting the data packet by using the light source.

A two-beam steering device comprising two single-beam steering devices and a motorized, rotating base stage, wherein each single-beam steering device is able to steer an electromagnetic wave beam in a full field of regard, wherein the two single-beam steering devices are fixed on top of the rotating base stage. The two-beam steering device can point the two individual beams into any direction pair in the entire field of regard with full flexibility.

A transmitter may include a digital signal processor (DSP) to generate an electrical signal associated with a beacon and a data signal. The transmitter may include an electro-optical component to convert the electrical signal to an optical signal to be transmitted by the transmitter. The beacon and the data signal may be on a common wavelength in the optical signal. A power of the beacon within the optical signal may be based on a value of an amplitude modulation factor applied to the beacon by the DSP in association with generating the electrical signal.

A transmitter may include a digital signal processor (DSP) to generate an electrical signal associated with a beacon and a data signal. The transmitter may include an electro-optical component to convert the electrical signal to an optical signal to be transmitted by the transmitter. The beacon and the data signal may be on a common wavelength in the optical signal. A power of the beacon within the optical signal may be based on a value of an amplitude modulation factor applied to the beacon by the DSP in association with generating the electrical signal.

A modulating circuit adapted to modulate between an energy harvesting mode and a wireless transmitter mode is disclosed which includes a solar cell, an energy-harvesting circuit, a first switch coupling the solar cell to the energy harvesting circuit and controlled by a first control line, a second switch coupling the solar cell to a programmable current source and controlled by a second control line, a transmitter/energy harvesting mode circuit adapted to select between a transmitter mode and an energy harvesting mode, and a symbol-to-current mapping circuit adapted to encode data to be communicated by the solar cell, the symbol-to-current mapping circuit adapted to adjust the programmable current source to thereby provide a metered current to the solar cell.

A modulating circuit adapted to modulate between an energy harvesting mode and a wireless transmitter mode is disclosed which includes a solar cell, an energy-harvesting circuit, a first switch coupling the solar cell to the energy harvesting circuit and controlled by a first control line, a second switch coupling the solar cell to a programmable current source and controlled by a second control line, a transmitter/energy harvesting mode circuit adapted to select between a transmitter mode and an energy harvesting mode, and a symbol-to-current mapping circuit adapted to encode data to be communicated by the solar cell, the symbol-to-current mapping circuit adapted to adjust the programmable current source to thereby provide a metered current to the solar cell.

A method of RF signal processing comprises receiving an incoming RF signal at each of a plurality of antenna elements that are arranged in a first pattern. The received RF signals from each of the plurality of antenna elements are modulated onto an optical carrier to generate a plurality of modulated signals that each have at least one sideband. The modulated signals are directed along a corresponding plurality of optical channels with outputs arranged in a second pattern corresponding to the first pattern. A composite optical signal is formed using light emanating from the outputs of the plurality of optical channels. Non-spatial information contained in at least one of the received RF signals is extracted from the composite signal.

A method of RF signal processing comprises receiving an incoming RF signal at each of a plurality of antenna elements that are arranged in a first pattern. The received RF signals from each of the plurality of antenna elements are modulated onto an optical carrier to generate a plurality of modulated signals that each have at least one sideband. The modulated signals are directed along a corresponding plurality of optical channels with outputs arranged in a second pattern corresponding to the first pattern. A composite optical signal is formed using light emanating from the outputs of the plurality of optical channels. Non-spatial information contained in at least one of the received RF signals is extracted from the composite signal.