Modification of Sidelobe Canceller System In Planar Arrays (RESEARCH NOTE)

Authors

  • N. Komjani Electerical Engineering, Iran University of Science & Technology
Abstract:

A Side Lobe Canceller (SLC) structure is a conventional partially adaptive technique which is used in large adaptive array radars. If a desired signal has long time duration in comparison with the SLC adaptation time, signal components may be cancelled. So, this paper presents a modified SLC which eliminates desired signal cancellation problems and allows using an unconstrained adaptive algorithm. Simulation results demonstrate the performance of this modified structure for a planar array.

Upgrade to premium to download articles

Sign up to access the full text

Already have an account?login

similar resources

Modulated Lapped Transform Generalized Sidelobe Canceller

Continuing improvements in analog and digital technology has made elemental digital beamforming (DBF) for sensor arrays a reality. Weak signal reception enhancement can be achieved through the adaptive suppression of potentially time-varying interference in operational environments. Utilizing all the degrees of freedom (DoF's) of an adaptive elemental DBF array with a large number of elements i...

full text

A novel wavelet-based generalized sidelobe canceller

This paper presents a novel narrowband adaptive beamformer with the generalized sidelobe canceller (GSC) as the underlying structure. The new beamformer employs the regular M -band wavelet lters in the design of the blocking matrix of the GSC, which, as justi ed analytically, can indeed block the desired signals as required, provided the wavelet lters have su ciently high regularity. Additional...

full text

Wavelet Domain Processing of Generalized Sidelobe Canceller for Wideband Smart Arrays

In this paper we discuss the application of wavelet transform domain processing in smart antenna arrays, specifically, in the design of a wideband generalized sidelobe canceller (GSC) beamformer. The wavelet transform domain least mean squares (LMS) processing is shown to have the effect of decreasing the spreading in the eigenvalues of the correlation matrix of the output data. This results in...

full text

Sidelobe Reduction in Non-Contiguous OFDM-Based Cognitive Radio Systems Using a Generalized Sidelobe Canceller

In orthogonal frequency division multiplexing (OFDM), sidelobes of the modulated subcarriers cause high out-of-band (OOB) radiation, resulting in interference to licensed and un-licensed users in a cognitive radio system environment. In this work, we present a novel technique based on a generalized sidelobe canceller (GSC) for the reduction of sidelobes. The upper branch of the GSC consists of ...

full text

Performance analysis of dual source transfer-function generalized sidelobe canceller

In this work, we evaluate the performance of a recently proposed adaptive beamformer, namely Dual source Transfer-Function Generalized Sidelobe Canceller (DTF-GSC). The DTF-GSC is useful for enhancing a speech signal received by an array of microphones in a noisy and reverberant environment. We demonstrate the applicability of the DTF-GSC in some representative reverberant and non-reverberant e...

full text

Overdetermined Blind Source Extraction exploiting a Generalized Sidelobe Canceller structure

In many acoustic applications, the extraction of only one desired source signal from a mixture of signals is required. We propose a novel method to perform this extraction in the overdetermined case where more sensors than sources are available. We apply blind signal processing techniques in a structure that is similar to a Generalized Sidelobe Canceller (GSC). In a GSC the upper branch reprodu...

full text

My Resources

Save resource for easier access later

Save to my library Already added to my library

{@ msg_add @}


Journal title

volume 19  issue 1

pages  13- 20

publication date 2006-11-01

By following a journal you will be notified via email when a new issue of this journal is published.

Hosted on Doprax cloud platform doprax.com

copyright © 2015-2023