A 2D array in C++ is an array of arrays, meaning it's a collection of elements arranged in a grid or table with rows and columns. This type of array is commonly referred to as a matrix.

malloc is the standard memory allocation function in C. It returns a pointer to the beginning of a memory segment. Often malloc is used like this: ...

Sparse arrays offer economic advantages by reducing the number of antennas. However, directly utilizing the covariance matrix of sparse array signals for wideband beamforming may lead to the emergence ...