Accession Number : ADA116586

Title :   Adaptive Array Behavior with Sinusoidal Envelope Modulated Interference.

Descriptive Note : Technical rept.,


Personal Author(s) : Al-Ruwais,Abdulaziz S ; Compton,R T , Jr

PDF Url : ADA116586

Report Date : Mar 1982

Pagination or Media Count : 46

Abstract : The behavior of an LMS adaptive array with modulated interference is described. An interference signal with sinusoidal, double-sideband, suppressed-carrier modulation is assumed. It is shown that such interference causes the array to modulate the desired signal envelope but not its phase. The amount of the desired signal modulation is determined as a function of signal arrival angles and powers and the modulation frequency of the interference. Such interference also causes the array output signal-to-interference-plus-noise ratio (SINR) to vary with time. However, it is shown that when the desired signal is a digital communication signal, the averaged bit error probability is essentially the same as for CW interference. (Author)

Descriptors :   *Arrays, *Adaptive systems, *Interference, Continuous waves, Probability, Errors, Modulation, Signals, Digital communications, Angle of arrival

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE