Abstract
Presented in this paper is a low-power technique, denoted as MIMO-AEC, to reduce energy dissipation in multi-input-multi-output (MIMO) signal processing systems. The proposed technique extends a previously proposed adaptive error-cancellation (AEC) technique to MIMO systems by employing an algorithm transformation denoted as MIMO-DECOR. The purpose of MIMO-DECOR is to reduce complexity by exploiting correlations inherent in MIMO systems, thereby improving the effectiveness of AEC. We employ the MIMO-AEC in the design of a low-power Gigabit Ethernet 1000Base-T device. Simulation results demonstrate 44.3% - 25.2% overhead reduction due to MIMO-DECOR and 69.1% - 64.2% energy savings over conventional implementations with no loss in algorithmic performance.
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