We consider downlink transmission at high data rates in a multi-cellular code-division multiple-access (CDMA) network where signals are directed to a mobile station (MS) from antennas located at the same or different base stations (BSs). All antennas use different pilots and transmit data to individual MSs with specified powers when selected to do so. Two sources of error are found to degrade c...

This letter considers how to approximately reconstruct a cascade system from a given unstructured system estimate. Many system identification methods, including subspace methods, provide reliable but generally unstructured black-box models. The problem we consider is how to find cascade systems that are close to such black-box models. For this, we use model matching techniques and optimal weigh...