I have a matrix $\mathbf{B}$ and $\mathbf{D}$ $\in \mathbb{R}^{n\times d}$ with $d>n$. Also, $\mathbf{B}$ can be a tight frame in some case.
Can someone suggest a method to decompose $\mathbf{B}$ such that $\mathbf{B=CD}$ for orthogonal $\mathbf{C} \in \mathbb{R}^{n\times n} $