An integrated CMOS interference canceller for MIMO systems

In this work, we present for the first time the theory and CMOS prototype for a interference canceller that improves the signal integrity and radiated pattern of closely spaced antennas for MIMO systems. The theory and prototype have been evaluated in a WLAN testhed demonstrating improvements of 3 to 4 dB in maximum radiated power. This improvement translates into 50-80 YO improvement in transmission distance, 40% reduction in power and lox improvements in BER