A very robust, fast, parallelizable adaptive least squares algorithm with excellent tracking abilities

Fault-Tolerant Recursive Least-Squares Computations on a Mesh-Connected Parallel Processor

“…General-purpose digital signal processors at this time were not able to perform at the required sampling rate for real-time RLS implementations, and so an alternative was sought. More details on systolic arrays can be found in [19][20][21].…”