Title :
An SDMA system based on spatial covariances
Author :
Farsakh, Christof ; Pensel, Karlheinz ; Nossek, Josef A.
Author_Institution :
Tech. Univ. Munchen, Germany
Abstract :
The aim of SDMA is the channel reuse within a mobile radio cell through spatial filtering techniques exploiting the different directions of arrival (DOAs) of the user signals. The performance of high-resolution DOA estimation algorithms may suffer from model errors introduced by diffuse multipath propagation. We present a robust SDMA system concept based on the estimation of spatial covariance matrices rather than of DOAs, therefore being immune to phenomena like diffuse multipath and/or high angular spread
Keywords :
array signal processing; cellular radio; channel allocation; covariance matrices; filtering theory; parameter estimation; space division multiple access; SDMA system; channel reuse; diffuse multipath propagation; directions of arrival; high-resolution DOA estimation algorithms; mobile radio cell; model errors; parameter estimation; performance; spatial covariance matrices; spatial filtering; user signals; Array signal processing; Base stations; Covariance matrix; Direction of arrival estimation; Downlink; Fading; Filtering; Frequency estimation; Land mobile radio; Multiaccess communication;
Conference_Titel :
Vehicular Technology Conference, 1998. VTC 98. 48th IEEE
Conference_Location :
Ottawa, Ont.
Print_ISBN :
0-7803-4320-4
DOI :
10.1109/VETEC.1998.686423
