Adaptive Beamforming Based on Space-Time Coding Metasurface Antenna with Hadamard Codes

A novel adaptive beamforming method utilizing the space-time coding metasurface and Hadamard codes is presented. By the modulation of the signal received by each element, the sum modulated signal can be received by single receiver. Then, the sum signal is used to reproduce each element's received signal. Ultimately, the reproduced signals are employed in adaptive beamforming, with the weighting vectors obtained from the traditional adaptive beamforming algorithm. Compared with the traditional adaptive beamforming method with digital array, the proposed method requires only single receiver, which greatly simplifies the receiver structure. In the end, the simulation proves the feasibility of the proposed adaptive beamforming method.