Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/61907
Title: Broadband power inversion array with maximally flat response at null directions
Authors: Ko, C.C. 
Issue Date: Aug-1989
Source: Ko, C.C. (1989-08). Broadband power inversion array with maximally flat response at null directions. IEE proceedings. Part F. Communications, radar and signal processing 136 (4) : 161-167. ScholarBank@NUS Repository.
Abstract: The paper presents and investigates a new LMS based algorithm for a broadband power inversion array using tapped delay line processing. In this algorithm, the signals from each L-tap delay line are first transformed and separated into L/2 real-and-quadrature signals, with the ℓth signal determining the (ℓ-1)th derivative of the frequency response of the array. Rejection of jammers is then obtained by using the LMS algorithm to update the processing for the first transformed signals from all the array elements, while the processing for the other signals is adjusted to constrain the frequency response of the array to be maximally flat at the null directions. Since this latter adjustment needs to be performed only sparingly and the signal transformation is simple and straightforward, the complexity of the new algorithm is comparable to that when the LMS algorithm is used directly. However, because there is now only one group of real-and-quadrature signals that needs to be adaptively processed, the new algorithm can be significantly faster then the LMS algorithm.
Source Title: IEE proceedings. Part F. Communications, radar and signal processing
URI: http://scholarbank.nus.edu.sg/handle/10635/61907
ISSN: 01437070
Appears in Collections:Staff Publications

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