Augmentation of Anti-Jam GPS System Using Smart Antenna With a Simple Doa Estimation Algorithm

Mukhopadhyay, Mainak; Sarkar, B.K.; Chakraborty, Ajay

doi:10.2528/pier06090504

Cited by 47 publications

(29 citation statements)

References 9 publications

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“…This combination of CMA & FSE used to implement blind adaptive algorithm for equalizer [18]. Figure 4 shows the frequency response of the microwave channel taken for simulation [16,17].…”

Section: P By Defining the Sub-channel Impulse Response As Hmentioning

confidence: 99%

Fractionally Spaced Constant Modulus Algorithm for Wireless Channel Equalization

Kundu¹,

Chakraborty²

2008

PIER B

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Abstract-Wireless channel identification and equalization is one of the most challenging tasks because broadcast channels are often subject to frequency selective, time varying fading and there are several bandwidth limitations. Furthermore, each receiver channel has vastly different types of channel characteristics and signals to noise ratio. Here in this paper we consider channel equalization and estimation problem from trans-receiver perspective, specifically we try to estimate blind equalization schemes particularly using constant modulus Algorithm (CMA). We try to estimate a linear channel model driven by a QAM source and adapt a FSE (T /2) using CMA. It has been shown CMA-FSE successfully reduces the cluster variance so that transfer to a decision directed mode is possible and simultaneously error is reduced.

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“…This combination of CMA & FSE used to implement blind adaptive algorithm for equalizer [18]. Figure 4 shows the frequency response of the microwave channel taken for simulation [16,17].…”

Section: P By Defining the Sub-channel Impulse Response As Hmentioning

confidence: 99%

Fractionally Spaced Constant Modulus Algorithm for Wireless Channel Equalization

Kundu¹,

Chakraborty²

2008

PIER B

Self Cite

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“…Direction-of-arrival (DOA) estimation techniques have been frequently used in many applications such as radar, sonar, astronomy and wireless communications [1][2][3][4]. Among these applications, most arrays are linear or planar structures with uniformly polarized antenna elements.…”

Section: Introductionmentioning

confidence: 99%

Fast 2-D Doa and Polarization Estimation Using Arbitrary Conformal Antenna Array

Yang¹,

Yang²,

Nie³

et al. 2012

PIER C

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Abstract-A fast and simple parameter estimation algorithm, joint azimuth angles, elevation angles and polarization parameters of incident sources for an arbitrary conformal array is proposed. Based on 2-D Discrete Fourier Transform (2-D DFT), the computational complexity can be reduced significantly compared with traditional 2-D space-search MUSIC or polynomial rooting (search-free) methods. The antenna elements can be mounted on arbitrary curved surfaces or platforms. Conformal array characteristics, such as directional radiation patterns of the elements and polarization are taken into consideration. Numerical simulations based on real-world conformal arrays are provided to demonstrate the performance of the proposed method.

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“…[1][2][3][4][5][6][7][8][9][10][11][12]. The directionsof-arrival (DOA) estimation [13][14][15][16][17][18] of signals impinging on an array of sensors is a fundamental problem in array processing, and many methods have been proposed for its solution. Eigen-decompositionbased methods, including multiple signal classification (MUSIC) and estimation of signal parameters via rotational invariance techniques (ESPRIT), have high resolution DOA estimation performance, but they fail to work in coherent signal condition.…”

Section: Introductionmentioning

confidence: 99%

Blind Direction of Arrival Estimation of Coherent Sources Using Multi-Invariance Property

Zhang¹,

Yu²,

Feng³

et al. 2008

PIER

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Abstract-Blind direction of arrival (DOA) estimation algorithms of coherent sources using multi-invariance property is presented in this paper. ESPRIT-like algorithm in [23] can estimate DOA of coherent signal, but its performance is without satisfaction. We reconstruct the received signal to form data model with multi-invariance property, and then multi-invariance ESPRIT and multi-invariance MUSIC algorithms for coherent DOA estimation are proposed in this paper. Our proposed algorithms can resolve the DOAs of coherent signals. They have much better DOA estimation performance than ESPRITlike algorithm. Meanwhile they identify more DOAs than ESPRIT-like algorithm. The simulation results demonstrate their validity.

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Augmentation of Anti-Jam GPS System Using Smart Antenna With a Simple Doa Estimation Algorithm

Cited by 47 publications

References 9 publications

Fractionally Spaced Constant Modulus Algorithm for Wireless Channel Equalization

Fractionally Spaced Constant Modulus Algorithm for Wireless Channel Equalization

Fast 2-D Doa and Polarization Estimation Using Arbitrary Conformal Antenna Array

Blind Direction of Arrival Estimation of Coherent Sources Using Multi-Invariance Property

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