Patent ID: 8705646

Claim:
Matrix operation circuitry for performing operations to obtain an inverted covariance matrix from a candidate input data symbol in a stream of input data symbols, said stream including pilot symbols other than said candidate data symbol, said matrix operation circuitry comprising: memory circuitry; and dedicated processing circuitry that performs complex multiplication operations, said dedicated processing circuitry being linked to said memory circuitry; wherein: said dedicated processing circuitry performs complex multiplication operations on a matrix derived from one of said pilot symbols to produce at least one constant matrix; said dedicated processing circuitry stores said at least one constant matrix in said memory circuitry; said matrix operation circuitry retrieves said at least one constant matrix from said memory circuitry and operates on said at least one constant matrix and on parameters relating said candidate data symbol to said one of said pilot symbols, by performing additional complex multiplication operations in said dedicated processing circuitry, to obtain at least said covariance matrix.