Transmitter and receiver for transceiving optical signals
AssigneeUniversitaet Duisburg-Essen
InventorsPeter Jung, Guido Bruck
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Abstract
A transmitter for transmitting an optical signal based on a baseband signal, including an up-transformer for up-transforming the baseband signal to obtain a bandpass signal and a converter for converting the bandpass signal into a signal having a DC-offset. The transmitter further includes a modulator for modulating a light source with the signal having the DC-offsets to transmit the optical signal.
Claims20
A transmitter for transmitting an optical signal based on a baseband signal, comprising:
- a transmit-phase-shifter for transmit-phase-shifting the baseband signal to acquire a phase-shifted baseband signal;
- an up-transformer for up-transforming the phase-shifted baseband signal and another baseband signal to acquire bandpass signals;
- a converter for converting the bandpass signals into signals comprising a DC-offset;
- and
- a modulator for modulating a plurality of light sources with the signals comprising the DC-offset to transmit the optical signals;
- wherein the transmit-phase-shifter is adapted for phase-shifting the baseband signal according to a precoding scheme, a spatial multiplexing scheme and/or a beamforming scheme.
A method for transmitting an optical signal based on a baseband signal, comprising
- transmit-phase-shifting the baseband signal to acquire a phase-shifted baseband signal;
- up-transforming the phase-shifted baseband signal and another baseband signal to acquire bandpass signals;
- converting the bandpass signals into signals comprising a DC-offset;
- and
- modulating a plurality of light sources with the signals comprising the DC-offset to transmit the optical signals;
- wherein the transmit-phase-shifting is adapted for phase-shifting the baseband signal according to a preceding scheme, a spatial multiplexing scheme and/or a beamforming scheme.
A receiver for receiving baseband signals based on a plurality of optical signals, comprising:
- a demodulator for demodulating the optical signals into electrical bandpass signals comprising a DC-offset;
- a compensator for compensating the DC-offset to acquire bandpass signals;
- and
- a down-transformer for down-transforming the bandpass signals to acquire the baseband signals;
- and
- a receive-phase-shifter for receive-phase-shifting the baseband signals according to a coding scheme, a spatial multiplexing scheme and/or a beam-forming scheme.
A mobile device comprising a receiver for receiving baseband signals based on a plurality of optical signals, the receiver comprising:
- a demodulator for demodulating the optical signals into electrical bandpass signals comprising a DC-offset;
- a compensator for compensating the DC-offset to acquire bandpass signals;
- and
- a down-transformer for down-transforming the bandpass signals to acquire the baseband signals;
- and
- a receive-phase-shifter for receive-phase-shifting the baseband signals according to a coding scheme, a spatial multiplexing scheme and/or a beam-forming scheme.
A method for receiving baseband signals based on a plurality of optical signals comprising
- demodulating the optical signals into electrical bandpass signals comprising a DC-offset;
- compensating the DC-offset to acquire bandpass signals;
- and
- down-transforming the bandpass signals to acquire the baseband signals;
- and
- receive-phase-shifting the baseband signals according to a coding scheme, a spatial multiplexing scheme and/or a beam forming scheme.
A system comprising a transmitter for transmitting an optical signal based on a baseband signal, the transmitter comprising:
- a transmit-phase-shifter for transmit-phase-shifting the baseband signal to acquire a phase-shifted baseband signal;
- an up-transformer for up-transforming the phase-shifted baseband signal and another baseband signal to acquire bandpass signals;
- a converter for converting the bandpass signals into signals comprising a DC-offset;
- and
- a modulator for modulating a plurality of light sources with the signals comprising the DC-offset to transmit the optical signals;
- wherein the transmit-phase-shifter is adapted for phase-shifting the baseband signal according to a precoding scheme, a spatial multiplexing scheme and/or a beamforming scheme;
- and a receiver for receiving baseband signals based on a plurality of optical signals, the receiver comprising:
- a demodulator for demodulating the optical signals into electrical bandpass signals comprising a DC-offset;
- a compensator for compensating the DC-offset to acquire bandpass signals;
- and
- a down-transformer for down-transforming the bandpass signals to acquire the baseband signals;
- and
- a receive-phase-shifter for receive-phase-shifting the baseband signals according to a coding scheme, a spatial multiplexing scheme and/or a beam-forming scheme.
A computer program comprising a program code for performing the method for transmitting an optical signal based on a baseband signal, the method comprising
- transmit-phase-shifting the baseband signal to acquire a phase-shifted baseband signal;
- up-transforming the phase-shifted baseband signal and another baseband signal to acquire bandpass signals;
- converting the bandpass signals into signals comprising a DC-offset;
- and
- modulating a plurality of light sources with the signals comprising the DC-offset to transmit the optical signals;
- wherein the transmit-phase-shifting is adapted for phase-shifting the baseband signal according to a preceding scheme, a spatial multiplexing scheme and/or a beamforming scheme,
- when the computer program runs on a computer or processor.
A computer program comprising a program code for performing the method for receiving baseband signals based on a plurality of optical signals, the method comprising
- demodulating the optical signals into electrical bandpass signals comprising a DC-offset;
- compensating the DC-offset to acquire bandpass signals;
- and
- down-transforming the bandpass signals to acquire the baseband signals;
- and
- receive-phase-shifting the baseband signals according to a coding scheme, a spatial multiplexing scheme and/or a beam forming scheme,
- when the computer program runs on a computer or processor.
Dependencies are inferred from the claim text.