Downlink adaptive array algorithms for cellular mobile communications

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 whil...

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Bibliographic Details
Published inIEEE transactions on communications Vol. 51; no. 3; pp. 476 - 488
Main Author Morgan, D.R.
Format Journal Article
LanguageEnglish
Published New York IEEE 01.03.2003
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Adaptive arrays
Algorithms
Arrays
Covariance matrix
Downlink
Eigenvalues
Eigenvalues and eigenfunctions
Estimates
Frequency
GSM
Interchannel interference
Mathematical analysis
Mathematical models
Mobile communication
Optimization
Radio spectrum management
Wireless communication
Online AccessGet full text
ISSN0090-6778
1558-0857
DOI10.1109/TCOMM.2003.809783

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Summary: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.
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ISSN:0090-6778
1558-0857
DOI:10.1109/TCOMM.2003.809783