Tracking performance of a stochastic gradient algorithm for transmit antenna weight adaptation with feedback
نویسندگان
چکیده
In this paper the tracking performance of a transmit antenna weight adaptation algorithm applied in a fading channel is considered. The system uses a stochastic gradient algorithm incorporating gradient sign feedback from a receiving unit to adjust the transmit weights. The feedback is simply a bit indicating which of two normalized perturbed transmission weights delivers greater power to the receiver. A reasonable performance measure is defined and an analytic estimate of the performance in an AR1 vector fading channel is derived and compared to simulations.
منابع مشابه
A simple gradient sign algorithm for transmit antenna weight adaptation with feedback
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