Reconfigurable Space-Time-Coding Through Time-Modulated Array

In this work, the synthesis of multi-beam patterns in time-modulated linear arrays (TMLAs) for multi- point-to-point communication purposes is addressed. The harmonic radiations unavoidably generated by the periodic pulse trains modeling the excitations of the array elements are exploited as independent channels for receiving multiple signals with different directions of arrival, jointly suppressing the undesired interferences. A stochastic algorithm is employed to determine the optimal descriptors of the pulse sequences which allow for the maximization of the signal-to-interference- plus-noise ratio (SINR) at the receiver by means of suitable pattern shaping and nulling.