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Downlink adaptive array algorithms for cellular mobile communications

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1 Author(s)
Morgan, D.R. ; Lucent Technol. Bell Labs., Murray Hill, NJ, USA

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.

Published in:

Communications, IEEE Transactions on  (Volume:51 ,  Issue: 3 )

Date of Publication:

March 2003

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