Mobile wireless optical communication receiver for maximum ratio coupling to daylight noise and method associated therewith

A method performed by a receiver operating in an Optical Wireless Communication (OWC) system, the method comprising:

• receiving an optical signal comprising a target signal and/or solar noise;
• amplifying the optical signal;
• filtering the optical signal which is amplified into an in-band wavelength band and an out-of-band wavelength band, respectively;
• attenuating a power of the target signal present in the in-band wavelength band;
• converting the target signal of which the power is attenuated into a first baseband electrical signal;
• low-pass filtering the first baseband electrical signal;
• converting the solar noise present in the out-of-band wavelength band into a second baseband electrical signal;
• and
• outputting baseband electrical signals comprising the first baseband electrical signal and/or the second baseband electrical signal.

A receiver operating in an Optical Wireless Communication (OWC) system, the receiver comprising:

• a plurality of photoelectric amplification receivers each taking an optical signal as an input and outputting a first baseband electrical signal based on a target signal and a second baseband electrical signal based on solar noise;
• an analog-to-digital converter for sampling the first baseband electrical signal and the second baseband electrical signal;
• and
• a digital signal processor for calculating a maximum ratio combining algorithm based on the first baseband electrical signal the second baseband electrical signal which are sampled, and demodulating the same to output final received data.