On Adaptive Beamforming for Coherent Interference Suppression via Virtual Antenna Array

Li, Weihua; Li, Yi-Peng; Yu, Weikuan

doi:10.2528/pier12010802

Cited by 19 publications

(18 citation statements)

References 24 publications

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“…It is precisely an original idea for the antenna operating in multi-beams or beam-scanning, although many investigators [14][15][16][17][18][19][20][21][22][23][24][25] have been working on the techniques for several years. The plasma antenna of beam-forming examined in this paper is composed of plasma elements as reflector (or scatterer to be more accurate) and additional omnidirectional radiation source.…”

Section: Introductionmentioning

confidence: 99%

A New Plasma Antenna of Beam-Forming

Wu¹,

Shi²,

Chen³

et al. 2012

PIER

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Abstract-In this paper, a new plasma antenna of beam-forming is investigated based upon the interaction of plasma elements due to the incident electromagnetic wave. It presents a study of the multiple scattering from argon plasma cylinders rigorously applying boundary value method, grounded on the properties of electromagnetic wave transmitted in the argon plasma. Approximate expressions for the total radiation of plasma antenna in the far field are derived briefly. Such a novel plasma antenna of beam-forming, according to the research, exhibits interesting performance in terms of radiation efficiency, beam-forming and beam-scanning. Valid results are brought forth to demonstrate the capabilities of such antenna of two scales. Comparisons are given in detail as well.

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Section: Introductionmentioning

confidence: 99%

A New Plasma Antenna of Beam-Forming

Wu¹,

Shi²,

Chen³

et al. 2012

PIER

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“…A versatile approach of array signal processing is beamforming [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19], which is used to detect and enhance a desired signal while suppressing interference and noise at the output of an array of sensors. It is well known that the benefits brought by beamforming such as signal-to-noise ratio enhancement and spatial resolution are restricted by the ratio of array aperture size relative to the working wavelength.…”

Section: Introductionmentioning

confidence: 99%

Robust Superdirective Beamforming for Hf Circular Receive Antenna Arrays

Zhou¹,

Gao²,

Zhang³

et al. 2013

PIER

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Abstract-Superdirective beamforming can highly reduce the aperture size of high-frequency receive array. At the same time, the closely spaced elements of a small aperture array can make it low efficiency and sensitivity to the array uncertainty, which limit its application in practice. Using a parameter called sensitivity factor, we found that array efficiency and robustness against array error could be considered simultaneously. On that basis, we derive a novel superdirective beamforming criterion based on a constrained sensitivity factor for the HF circular receive array. New method is analytical and computationally inexpensive. Through making the directive gain with a given sensitivity factor maximum, we calculate the optimal weights of the array elements. To illustrate the proposed method can increase the acceptance of HF superdirective receive arrays in practice, several numerical results are provided.

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“…Although TALS has some superior properties, such as simplicity formulation and monotone convergence, it still suffers from some inherent problems, for example, low convergence speed, in following cases: a) High correlated factors involved in trilinear model. This condition is often defined as "presence of degeneracy" and appears when coherent signals are considered [23][24][25]. b) Initialized by random numbers.…”

Section: Introductionmentioning

confidence: 99%

Constrained Trilinear Decomposition With Application to Array Signal Processing

Liu¹,

Jiang²,

Yang³

et al. 2012

PIER

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Abstract-This paper links the constrained trilinear tensor model into array signal processing. The structure properties of baseband signal, such as the Constant-Modulus (CM) and Finite Alphabet (FA) structures which are already known in the receiving array, are exploited in trilinear decomposition. Two novel algorithms for constrained trilinear decomposition are proposed and applied to array signal processing. The distinguishing features of the proposed model and algorithms compared to the traditional trilinear signal processing methods are: (i) the proposed model has a better performance and lower computation complexity. (ii) it can still work well even if degeneracy of factors are involved in the data model, which is not valid in traditional algorithms. Simulation results are presented to illustrate the application of the constrained trilinear decomposition to array signal processing and evaluate the performance of the proposed algorithms in DOAs estimation.

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On Adaptive Beamforming for Coherent Interference Suppression via Virtual Antenna Array

Cited by 19 publications

References 24 publications

A New Plasma Antenna of Beam-Forming

A New Plasma Antenna of Beam-Forming

Robust Superdirective Beamforming for Hf Circular Receive Antenna Arrays

Constrained Trilinear Decomposition With Application to Array Signal Processing

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