Methods and apparatus for high capacity spectrally efficient mimo and optical beamforming enabled photonic millimeter-wave over fiber (mmwof) wireless transceiver systems based on quantum dot multi-wavelength lasers with wavelength division multiplexing and space division multiplexing

A millimeter-wave (MMW) wireless communication system comprising:

• a central office comprising a single QD-MWL source for generating MMW wireless signals remotely;
• an optical coupler for splitting at least one optical signal into at least one first split signal comprising of multiple wavelengths for use as at least one data channel and at least one one optical local oscillator (LO);
• a first optical modulator for modulating the least one first split signal with at least one wireless data signal and combining the at least one data modulated optical signal with at least one optical LO generating one downlink optical MMW signal;
• an optical transmission medium;
• and
• at least one remote radio head or remote radio unit (RRH/RRU) for receiving at least one downlink wireless data signal, and at least one optical LO for up-converting the received at least one downlink data signal into at least one RF MMW wireless signal;
• and
• wherein the same at least one optical LO at the central office is reused to provide at least one optical carrier and at least one optical LO to the least one uplink and downlink MMW wireless signals, respectively, at the at least one RRH/RRU where the at least one uplink MMW wireless signal modulates the at least one optical carrier in a single side band (SSB) or carrier-suppressed single-sideband modulation (CS-SSB) configuration, and whereby the at least one uplink MMW signal is transported via the optical transmission medium to the central office, achieving RF synthesizer free RRH/RRU;
• and
• wherein the at least one RF MMW signal received at the central office is optically down-converted to at least one intermediate frequency (IF) or baseband signal by the at least one optical channel of the same QD-MWL or down-converted electronically depending on the system requirements and the at least one IF/baseband signal is converted to digital signal for baseband digital signal processing.