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Downlink adaptive array algorithms for cellular mobile communications
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DOI：10.1109/TCOMM.2003.809783.png)
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Abstract
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The capacity of wireless downlink communication to mobile receivers in a dense urban environment is limited primarily by co-channel interference. Downlink adaptive arrays can be used to mitigate, this limitation by maximizing the power transmitted to desired in-cell mobiles in the reference cell while minimizing power to co-channel mobiles in neighboring cells. This is accomplished by using uplink measurements to estimate downlink covariance matrices and then solving a generalized eigenvalue problem. Several algorithms are proposed to adaptively estimate the optimal solution and are evaluated using a simplified signal model that allows efficient deterministic performance calculations.
Keywords:
adaptive array algorithms
cellular mobile communications
co-channel interference
generalized eigenvalue problem
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