Title :
Adaptive Array Behavior with Periodic Phase Modulated Interference
Author :
Al-ruwais, Abdulaziz S. ; Compton, R.T., Jr.
Author_Institution :
King Saud University Saudi Arabia
Abstract :
We consider a least mean square (LMS) adaptive array [1] receiving a phase modulated interference signal. The phase modulation is assumed to be periodic and to have finite bandwidth. Under these assumptions, we determine the time-varying array weights, the modulation on the array output desired signal, and the time-varying output interference-to-noise ratio (INR) and SINR (signal-to-interference-plus-noise ratio). We present numerical results describing the behavior of a 2-element adaptive array that receives an interference signal with sinusoidal phase modulation. We show how each signal parameter (arrival angle, power, modulation index, and modulation frequency) affects the performance of the array.
Keywords :
Adaptive arrays; Bandwidth; Error probability; Interference; Laboratories; Least squares approximation; Phase modulation; Phased arrays; Pulse modulation; Signal to noise ratio;
Journal_Title :
Aerospace and Electronic Systems, IEEE Transactions on
DOI :
10.1109/TAES.1987.310853