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## Senior Advisory Editor

### Citations

1877 |
Adaptive filter theory
- Haykin
- 2002
(Show Context)
Citation Context ...mated time delay is an integral multiple of the sampling period. This resolution is usually not sufficient for many microphone array applications. Much effort has been devoted to solving this problem =-=[17, 21, 32]-=-. Among these, interpolation around the detected peaks of the cost function is the simplest yet most effective way to refine the TDE. Here we employ the 3-point Lagrange’s method to improve the resolu... |

1178 |
Multirate Systems and Filter Banks
- Vaidyanathan
- 1992
(Show Context)
Citation Context ...erform fairly well in singlepath propagation situation, but suffer performance degradation when multipath or reverberation effects are present. Recently, several advanced TDE techniques were proposed =-=[22, 23, 24, 25, 26]-=-, which can better deal with reverberation. However, the GCC and AMDF techniques are still preferred by many engineers and are widely used in various systems for their computational efficiency and sim... |

269 |
Theory and Application
- Rabiner, Gold
- 1975
(Show Context)
Citation Context ...AMDF(n) = 1 N N−1∑ i=0 ∣∣x1(i)− x2(i + n)∣∣. (4) The delay estimate, based on AMDF, is given by τ̂AMDF = argmin n Ψ̂AMDF(n). (5) The AMDF approach has been used for TDE and pitch tracking for decades =-=[7, 28]-=-. The preference of employing AMDF over GCC for TDE is mainly due to the following facts. First, the performance of the AMDF estimator in favorable noise conditions is better than that of the GCCmetho... |

238 |
Spectral analysis for physical applications
- Percival, Walden
- 1993
(Show Context)
Citation Context ...shifted to misalignment. Combination of open and closed panels can produce 2369 different acoustic environments where the 60 dB reverberation time T60 can change from 0.2 to almost 1 second (refer to =-=[33, 34]-=- for more details). A linear microphone array which consists of 22 omnidirectional Panasonic WM-61A microphones was mounted at the distance of 500mm from the north wall of the chamber and approximatel... |

234 |
Space-time processing for wireless communications,”
- Paulraj, Papadias
- 1997
(Show Context)
Citation Context ...d of array processing is to determine the number of signals that impinge on a passive sensors array. The problem arises in several fields of array processing such as radar, and seismology (see, e.g., =-=[1, 2, 3, 4, 5, 6]-=-). This question received considerable interest not only because of its nature, but also because most algorithms for direction-of-arrival (DOA) estimation assume a prior knowledge of the number of sig... |

139 |
On the asymptotic eigenvalue distribution of Toeplitz matrices
- Gray
- 1972
(Show Context)
Citation Context ...he AMDF method may be sensitive to the background noise. As a matter of fact, many reported experiments have confirmed that the AMDF estimator is less robust with respect to noise than the GCC method =-=[31]-=-. Equation (6) also suggests that the performance of AMDF can be affected by the source signal, like in Max CC estimator τ0 0.5 1 1.5 2 2.5 3 Delay (ms) −4 −2 0 2 4 ×104 G C C F WCC estimator τ0 0.5 1... |

134 |
Frequency-domain and multi-rate adaptive filtering,”
- Shynk
- 1992
(Show Context)
Citation Context ...ost function associated with MLE requires a multidimensional search in the multiple sources case. Thus, for multiple signals with unknown waveforms we resort to a method based on the ideas of Schmidt =-=[17]-=- also known as the MUSIC (multiple signals classification) algorithm. For multiple signals with known waveforms, we use the ideas of [18] to simplify the cost function. We show that for a planar geome... |

50 |
Spatial and temporal communication theory using adaptive antenna array
- Kohno
- 1998
(Show Context)
Citation Context ...Naval Research under Grant no. N00014-03-1-0102. REFERENCES [1] M. Basseville and I. V. Nikiforov, Detection of Abrupt Changes: Theory and Application, Prentice Hall, Englewood Cliffs, NJ, USA, 1993. =-=[2]-=- G. Lorden, “Nearly-optimal sequential tests for finitely many parameter values,” Annals of Statistics, vol. 5, no. 1, pp. 1–21, 1977. [3] I. V. Nikiforov, “A generalized change detection problem,” IE... |

50 | Near-perfect-reconstruction pseudo-QMF banks
- Nguyen
- 1994
(Show Context)
Citation Context ... be improved by incorporating some other information. Our contribution is threefold. First of all, inspired by the weighted autocorrelation method, which has been recently proposed for pitch tracking =-=[27]-=-, we propose a weighted cross-correlation (WCC) estimator in which the GCC function is weighted by the reciprocal of AMDF. This new method can sharpen the peak of the GCC function, which corresponds t... |

18 |
Frequency-domain Adaptive Filtering Revisited, Generalization to the Multi-channel Case, and Application to Acoustic Echo Cancellation,”
- Benesty, Morgan
- 2000
(Show Context)
Citation Context ...Processing Letters, vol. 7, no. 1, pp. 3–5, 2000. [13] P. J. Chung and J. F. Böhme, “Recursive EM and SAGE algorithms with application to DOA estimation,” to appear in IEEE Trans. Signal Processing. =-=[14]-=- B. Yang, “Projection approximation subspace tracking,” IEEE Trans. Signal Processing, vol. 43, no. 1, pp. 95–107, 1995. [15] R. E. Zarnich, K. L. Bell, and H. L. Van Trees, “A unified method for meas... |

14 | A unified approach to time- and frequency-domain realization of FIR adaptive digital filters - Clark, Parker, et al. - 1983 |

12 |
A Computationally Efficient Frequency-Domain LMS Algorithm with Constraints on the Adaptive Filter”,
- Rafaely, Elliott
(Show Context)
Citation Context ...or determining the TDOA between two signals [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16]. One typical time-delay estimation (TDE) technique is the generalized cross-correlation (GCC)method =-=[1, 2, 3, 4, 5, 6, 7, 9, 16, 17, 18, 19, 20]-=- in which the delay estimate is obtained as the time lag that maximizes the GCC function between two microphone signals. The measured time delay is an integral multiple of the sampling period. In othe... |

8 |
Sommen, “New constraining method for partitioned block frequencydomain adaptive filters
- Derkx, Egelmeers, et al.
- 2002
(Show Context)
Citation Context ... on the dynamics of the true parameters, for instance, rate of change. Interested readers can find general guidelines in [11] and an adaptive procedure designed for REM with a decreasing step size in =-=[20]-=-. 54 EURASIP Journal on Applied Signal Processing 90 80 70 60 50 40 30 20 10 0 D O A (d eg re e) 5 10 15 20 25 30 35 40 45 50 Time index Figure 1: True trajectory (solid lines) and estimated trajector... |

8 | Resolution limits of blind multi-user multi-channel identification schemes—the bandlimited case
- Veen
- 1996
(Show Context)
Citation Context ...weight for each virtual channel. The optimum value of v usually occurs around (M + D1)/2 − 1, but the actual result depends on the channel characteristics. Typically, J is chosen as either one or two =-=[23]-=-. In addition, it can be shown [21] that, when the channels meet the following conditions: (1) H1 is full column rank, (2) the columns of H1 are linearly independent of the columns ofHp, p = 2, . . . ... |

7 | A signal subspacebased subband approach to space-time adaptive processing for mobile communications
- Yang, Zhang, et al.
- 2001
(Show Context)
Citation Context ..., the optimum weight vector under the MMSE criterion can be provided using the Wiener-Hopf solution: wopt = R−1o ro (9) with Ro = E [ x(n)xH(n) ] , ro = E [ x(n)s∗1 (n− v) ] , (10) where v is a delay =-=[21]-=-, which is chosen to minimize the following MMSE: MMSE = E∣∣s1(n− v)−wHoptx(n)∣∣2 = 1− rHo R−1o ro. (11) Substituting (7) in (10), and using assumption (A2), we have ro = H1ev, (12) where ev = [ 0, . ... |

6 | Subband CMA adaptive arrays in multipath fading environment
- Zhang, Yang, et al.
- 2000
(Show Context)
Citation Context ...ed signals as they would be in radar and radio communication applications. Recently, an extended cyclic MUSIC algorithm has been proposed in [3] that provides a rather good estimation performance. In =-=[4]-=- an extended root-MUSIC (extension of the rootMUSIC [5]) algorithm has been proposed in the noncircular source case. In this paper, we propose a new extended cyclic direction finding method that allow... |

5 |
Efficient multirate adaptive beamforming technique
- Khalab, Woolfson
- 1994
(Show Context)
Citation Context ...≥ · · · ≥ lp are the eigenvalues of the empirical received signal’s correlation matrix, R̂ = (1/N)∑ xixHi . It is well known that the GMDL estimator is a consistent estimator of the number of sources =-=[12]-=-. In our problem the unknown parameters are the matrix A and the noise level. Since we do not restrict our attention to full-rank mixing matrices, when the number of sources is assumed to be q, the nu... |

4 | Adaptive array processing for multipath fading mitigation via exploitation of filter banks
- Zhang, Yang, et al.
- 2001
(Show Context)
Citation Context ...ge-dependence (RD) problem.” Various techniques have been developed to deal with the RD problem. The main ones are Doppler warping [3, 4], angle-Doppler compensation (both deterministic and adaptive) =-=[5, 6]-=-, derivative-based updating [4], and registrationbased compensation [7, 8, 9]. These methods are briefly reviewed in Section 2. In [7], we introduced the new concept of registrationbased compensation ... |

4 |
CMA adaptive array antennas using analysis and synthesis filter banks
- Sekiguchi, Karasawa
- 1998
(Show Context)
Citation Context ...or-Sensor MUSIC for Polarized Seismic Sources 75 y x Energy source Vector-sensor array ∆x Ground Heterogeneity (source to detect) Figure 1: Seismic acquisition scheme (reflection). versions of ESPRIT =-=[8, 9, 10, 11, 12]-=-. These approaches use matrix techniques directly derived from scalar-sensor array processing. Such a method is based on the long-vector approach, consisting in the concatenation of all components of ... |

4 |
On the steady state performance of frequency domain LMS algorithm
- Feuer, Cristi
- 1993
(Show Context)
Citation Context ... Fast algorithms for parameter estimation of sensor array signals, Doctoral thesis, Department of Electrical Engineering and Information Sciences, Ruhr-Universität Bochum, Bochum, Germany, May 2002. =-=[18]-=- D. M. Titterington, A. F. Smith, and U. E. Makov, Statistical Analysis of Finite Mixture Distributions, John Wiley & Sons, New York, NY, USA, 1985. [19] G. H. Golub and C. F. Van Loan, Matrix Computa... |

3 | Performance analysis of subband arrays
- Zhang, Yang, et al.
- 2001
(Show Context)
Citation Context ...ontrol applications. The most common approach for estimating this number is to apply information theoretic criteria like the minimum description length (MDL) or the Akaike information criterion (AIC) =-=[7]-=-. Since 1985 [3], when a Gaussian version of the MDL was first suggested for estimating the number of narrowband sources impinging on an array of sensors, this MDL-based estimator became a standard to... |

3 | Subband STAP processing: the fifth generation - Steinhardt, Pulsone |

3 |
The relationship between tapped delayline and FFT processing in adaptive arrays
- Jr
- 1988
(Show Context)
Citation Context ...neralization of the above schemes. For the centralized feedback schemes, Compton has shown that the frequency-domain array provides identical steady-state performance of the corresponding STAP system =-=[15]-=-. Such equivalence, however, is valid only for the undecimated (window sliding) cases. The use of decimation may provide significant system complexity reduction in subband array implementations. The a... |

3 |
A subband adaptive filter with the optimum analysis filter bank
- Ochi, Higa, et al.
- 1995
(Show Context)
Citation Context ...erform fairly well in singlepath propagation situation, but suffer performance degradation when multipath or reverberation effects are present. Recently, several advanced TDE techniques were proposed =-=[22, 23, 24, 25, 26]-=-, which can better deal with reverberation. However, the GCC and AMDF techniques are still preferred by many engineers and are widely used in various systems for their computational efficiency and sim... |

2 |
Performance comparison and improvement in adaptive arrays based on the time and frequency domain signal processing
- Kamiya, Karasawa
- 1999
(Show Context)
Citation Context ...ethod makes it less attractive in practice. To improve the computational efficiency of the ML approach, numerical methods such as the expectation and maximization (EM) algorithm [2] were suggested in =-=[3, 4, 5]-=-. Recursive procedures based on the recursive EM (REM) algorithm for estimating constant DOA parameters were discussed in [6, 7]. Similar procedures for tracking multiple moving sources were studied i... |

2 |
Performance analysis of subband adaptive array in multipath fading environment
- Tran, Taniguchi, et al.
- 2002
(Show Context)
Citation Context ...lihood ratio of the observations under the two hypotheses can be written explicitly, the following algorithm, called Page’s CUSUM test [7], is known to be optimal in the minimax sense described above =-=[6, 8]-=-. Page’s test declares the detection of a change point the first time the CUSUM statistic max 1≤n≤i Gin, (5) or the equivalent and computationally efficient recursive form Qi = ( Qi−1 + g ( yi ))+ ( Q... |

2 |
Subband adaptive arrays with different decimations
- Yang
- 2002
(Show Context)
Citation Context ...used extensively in cellular phone localization [6], radar systems [7], and underwater acoustics [8]. In underwater acoustics, matched-field processing (MFP) is often proposed for source localization =-=[9]-=-. MFP can be interpreted as the maximum a posteriori (MAP) estimate of location given the observed signal at the output of an array of sensors [9, 10]. Other interpretation of MFP is the well-known be... |

2 |
Subband processing for broad-band microphone arrays
- Hudson, Korompis, et al.
- 1996
(Show Context)
Citation Context ... since such a time difference often serves as the basis for beamforming and the estimation of direction of arrival (DOA). Extensive work has been reported for determining the TDOA between two signals =-=[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16]-=-. One typical time-delay estimation (TDE) technique is the generalized cross-correlation (GCC)method [1, 2, 3, 4, 5, 6, 7, 9, 16, 17, 18, 19, 20] in which the delay estimate is obtained as the time la... |

2 |
research laboratory report of limited distribution
- Lewis, Jr, et al.
- 1974
(Show Context)
Citation Context ...n order to achieve the same performance as the MDL estimator that exploits the special signal structure. The uniform performance improvement of the MDL over the GMDL should not come as a surprise. In =-=[16]-=- it was demonstrated that by using additional a priori information, one can improve the estimator performance considerably. In the next set of simulations we examine the case of detecting more than on... |

2 |
Array configuration design for space-time adaptive processing systems
- Yang, Zhang, et al.
- 2002
(Show Context)
Citation Context ...erform fairly well in singlepath propagation situation, but suffer performance degradation when multipath or reverberation effects are present. Recently, several advanced TDE techniques were proposed =-=[22, 23, 24, 25, 26]-=-, which can better deal with reverberation. However, the GCC and AMDF techniques are still preferred by many engineers and are widely used in various systems for their computational efficiency and sim... |

2 |
Performance analysis for subband identification
- Marelli, Fu
- 2004
(Show Context)
Citation Context |

1 | Convergence performance of subband arrays for spatio-temporal equalization
- Zhang, Yang, et al.
- 2001
(Show Context)
Citation Context ...is not a problem. Combining the subband signal processing and array processing results in subband array processing. So far, several subband arrays have been proposed for spatio-temporal equalizations =-=[3, 4, 5, 6, 7, 8, 9, 10, 12]-=-. For DFT-based subband arrays, the performance without decimation has been discussed in [7], whereas the performance with decimation is analyzed for CCI-free situations in [8]. In the latter, only th... |

1 |
Yimin Zhang received the M.S. and Ph.D. degrees from the University of Tsukuba
- Golub, Loan, et al.
- 1996
(Show Context)
Citation Context ...shifted to misalignment. Combination of open and closed panels can produce 2369 different acoustic environments where the 60 dB reverberation time T60 can change from 0.2 to almost 1 second (refer to =-=[33, 34]-=- for more details). A linear microphone array which consists of 22 omnidirectional Panasonic WM-61A microphones was mounted at the distance of 500mm from the north wall of the chamber and approximatel... |