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For a frequency flat multi-input multi-output (MIMO) system the QR decomposition can be applied to reduce the MIMO channel equalization problem to a set of decision feedback based single channel problems. Using a novel technique for polynomial matrix QR decomposition (PMQRD) based on Givens rotations, we show the PMQRD can do likewise for a frequency selective MIMO system. Two types of transmitter...
In the case of a frequency flat multiple-input multiple-output (MIMO) system, QR decomposition can be applied to reduce the MIMO channel equalization problem to a set of decision feedback based single channel equalization problems. Using a novel technique for polynomial matrix QR decomposition (PMQRD) based on Givens rotations, we extend this work to frequency selective MIMO systems. A transmitter...
For a narrowband multi-input multi-output (MIMO) system the singular value decomposition has the ability to provide multiple spatial channels for data transmission. We extend this work to obtain spatial diversity techniques for frequency selective MIMO systems using a polynomial matrix decomposition known as the sequential best rotation using second order statistics (SBR2) method. This algorithm diagonalizes...
In real time communications, system performance and computational complexities play key roles. Reducing the computational load and providing accurate performances are the main challenges in present systems. In this paper, a blind equalization (BE) with affordable complexity and good performance in large constellation MIMO systems is proposed. Saving computational cost happens both in the signal separation...
For a narrowband MIMO system the SVD is shown to design a channel with the highest gain. This work is then extended to a broadband MIMO scenario where SBR2, a novel algorithm for calculating the EVD of a polynomial matrix is applied. The algorithm's operation, based on Jacobi rotations is discussed and a multi-channel beamformer is designed. This is evaluated against a transmitter antenna selection...
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