Direction of Arrival Estimation via Exploitation of Cyclostationarity: A Frequency-Domain Approach

Pokrajac, Ivan; Vucic, Desimir; Moulines, Éric

doi:10.1109/eurcon.2005.1630276

Cited by 4 publications

(9 citation statements)

References 7 publications

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“…Another possible approach to solve the problem of optimal time lag knowledge is proposed in [4] based on the Fourier transformation of the cyclic correlation matrix. Using this idea, in [5], an algorithm for DOA estimation based on cyclostationarity properties of narrowband signals in frequency domain is proposed. Instead of the cyclic correlation matrix, the spectral cyclic correlation matrix (SCCM) is evaluated in the proposed algorithm.…”

Section: Introductionmentioning

confidence: 99%

“…Instead of the cyclic correlation matrix, the spectral cyclic correlation matrix (SCCM) is evaluated in the proposed algorithm. However, the algorithms proposed in [4] and [5] exploit only the cyclic property for DOA estimation, and they do not have the potential performance merit as that of the Averaged Conjugate Cyclic MUSIC and Extended Cyclic MUSIC.…”

Section: Introductionmentioning

confidence: 99%

“…In this paper, we propose the wideband spectral cyclic conjugate MU-SIC (WSCCM) algorithm and the extended wideband spectral cyclic MUSIC (EWSCM) algorithm. The algorithm presented in [5] exploits only cyclic properties of signals for DOA estimation, but not cyclic conjugate properties. It is important to note that complete analysis of wideband cyclostationary signals requires estimation of both the spectral cyclic and spectral cyclic conjugate correlation matrix, because some signals have both nonzero spectral cyclic correlation and nonzero spectral cyclic conjugate correlation, e.g., binary phase shift keying (BPSK) or minimum shift keying (MSK).…”

Section: Introductionmentioning

confidence: 99%

“…It is important to note that complete analysis of wideband cyclostationary signals requires estimation of both the spectral cyclic and spectral cyclic conjugate correlation matrix, because some signals have both nonzero spectral cyclic correlation and nonzero spectral cyclic conjugate correlation, e.g., binary phase shift keying (BPSK) or minimum shift keying (MSK). Because of that, we propose WSCCM and EWSCM algorithms modifying the algorithm in [5] with the idea of [2,4]. These algorithms perform signal selective DOA estimation of wideband and narrowband signals exploiting the spectral cyclic conjugate correlation matrix and extended spectral cyclic correlation matrix.…”

Section: Introductionmentioning

confidence: 99%

“…signals, which exhibit cyclic or cyclic conjugate features at cycle frequencies different from α and any noise are lumped into the vector n n n(t). If the wideband assumption holds, in the temporal frequency domain, the sensor outputs can be represented in a matrix-vector form as frequency dependent narrowband signals [4,5].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Wideband cyclic music algorithms: A frequency-domain approach

Pokrajac

Vucic

2010

FACTA U EE

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In this paper, we propose two spectral cyclic MUSIC DOA estimation algorithms for wideband cyclostationary signals: the wideband spectral cyclic conjugateMUSIC (WSCCM) algorithm and the extended wideband spectral cyclicMUSIC (EWSCM) algorithm. The proposed algorithms can be applied to estimate the spectral cyclic conjugate correlation matrix and the extended spectral cyclic correlation matrix of wideband cyclostationary signals. The presented algorithms do not require any knowledge of the optimal time lag parameter, which appears in the similar algorithms in time domain. In the proposed algorithms, the DOAs are estimated at each spectral component of the selected frequency band for a cyclic frequency of interest. This can be used to form the azimuth cyclic frequency diagram, similar to the azimuth frequency diagram in wideband direction-finding systems. Some simulation results are provided to confirm the theoretical findings.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Wideband cyclic music algorithms: A frequency-domain approach

Pokrajac

Vucic

2010

FACTA U EE

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DOA Estimation Using Single or Dual Reception Channels Based on Cyclostationarity

Wang

Xie²,

Zou

2019

IEEE Access

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This paper addresses the problem of direction-of-arrival (DOA) estimation for cyclostationary signals using less reception channel in comparison with the number of sensors. The system is considered to be realized by using the reception channel(s) to receive the signal reached each sensor in turn. Such simplification results in a cost reduction of the system and the effect of inconsistency among different channels are removed. However, non-synchronized sampling also makes the traditional DOA estimation algorithms ineffective. To cope with the problem, the signal models for DOA estimation using a single channel and dual channels are formulated based on signal cyclostationary, and the single channel cyclic MUSIC (SC-Cyclic-MUSIC) algorithm and the dual channels cyclic MUSIC (DC-Cyclic-MUSIC) algorithm are proposed correspondingly. This paper shows that both SC-Cyclic-MUSIC algorithm and DC-Cyclic-MUSIC algorithm work well when the switching interval is known, and a satisfied performance can also be obtained by DC-Cyclic-MUSIC algorithm when the uncertainty of the switching interval exists. Moreover, the proposed estimators are suitable for both narrow-band and wide-band signals. The computer simulations are provided to verify the effectiveness of the proposed algorithms. INDEX TERMS Direction-of-arrival (DOA) estimation, cyclostationarity, single channel cyclic MUSIC algorithm, dual channels cyclic MUSIC algorithm.

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Elimination of Side Peaks Using Cyclostationarity of Pilots for OFDM Signals

Zhang

Bao

2014

2014 International Conference on Computational Science and Computational Intelligence

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Direction of Arrival Estimation via Exploitation of Cyclostationarity: A Frequency-Domain Approach

Cited by 4 publications

References 7 publications

Wideband cyclic music algorithms: A frequency-domain approach

Wideband cyclic music algorithms: A frequency-domain approach

DOA Estimation Using Single or Dual Reception Channels Based on Cyclostationarity

Elimination of Side Peaks Using Cyclostationarity of Pilots for OFDM Signals

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