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In this work we demonstrate simultaneous communications using a 2×2 multiple in multiple out (MIMO) antenna array inside an enclosed ventilation duct. We further demonstrate that MIMO coefficients applied to transmit and receive antennas can be computed at a single frequency and applied over a range of frequencies and still provide effective MIMO communications. We use this technique to demonstrate bit error rates (BER) of <10-5 using a 1 Mbps data rate and 2 MHz of radio frequency (RF) bandwidth.
Date of Conference: 9-14 July 2006