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Adaptive transmitting antenna arrays with feedback

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2 Author(s)
Gerlach, D. ; Inf. Syst. Lab., Stanford Univ., CA, USA ; Paulraj, A.

We address the problem of transmitting multiple cochannel signals from an antenna array to several receivers so that each receiver gets its intended signal with minimum crosstalk from the remaining signals. In addition to the usual "information" mode, we propose a "probing" mode during which probing signals received at the mobiles are fed back to the transmitter. These probing signals are used to identify an unknown propagation environment, enabling the transmitter to form the necessary transmission beampatterns.<>

Published in:

Signal Processing Letters, IEEE  (Volume:1 ,  Issue: 10 )