Self-adaptive time domain equalization system and in-band full-duplex wireless communication system
A wireless communication system and time-domain equalization technology, applied in the field of microwave photonics and wireless communication, to achieve good rejection ratio, increase system complexity, and low device cost
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Embodiment 1
[0044] This embodiment provides an adaptive time-domain equalization system for multi-path self-interference channels in an optical self-interference cancellation system, including: an optical self-interference cancellation module, an adaptive time-domain equalization module, and a control module; wherein:
[0045] The adaptive time-domain equalization module performs adaptive training and adjustment on a reference signal, and the reference signal refers to a copied local baseband transmission signal;
[0046] The optical self-interference cancellation module receives a mixed signal and a reference signal formed by a multi-path self-interference signal generated after another local baseband transmission signal in the baseband transmission signal passes through a multipath channel and a useful signal sent by the transmitting antenna of the other communication unit, Elimination of self-interference signals is achieved through precise matching of reference signals, and useful rece...
Embodiment 2
[0057] This embodiment provides an in-band full-duplex wireless communication system, including a digital signal processing baseband unit, a radio frequency unit, a control unit, and an adaptive time-domain multi-path self-interference channel in the optical self-interference cancellation system provided in Embodiment 1 Equilibrium systems; where:
[0058] The adaptive time domain equalization module is set in the digital signal processing baseband unit;
[0059] The optical self-interference cancellation module is arranged in the radio frequency unit;
[0060] The control module is set in the control unit.
[0061] Preferably, the radio frequency unit also includes a plurality of mixers and electric power amplifiers, the baseband transmission signal passes through the mixers and the electric power amplifiers in sequence, and then passes through the multipath channel to generate a multipath self-interference signal, and inputs the useful signal to the optical An interference...
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