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Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on

Issue 4 • Date Apr 1996

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Displaying Results 1 - 9 of 9
  • A level-crossing sampling scheme for A/D conversion

    Publication Year: 1996 , Page(s): 335 - 339
    Cited by:  Papers (74)  |  Patents (3)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (488 KB)  

    A sampling scheme that is based on multiple level-crossings is presented. This scheme generates samples of the input signal that are nonuniformly spaced in time by recording the time instants at which the signal crosses any of the fixed quantization levels. The nonuniform sample sequence is transformed to uniform samples by polynomial interpolation. The resolution is further increased by employing... View full abstract»

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  • One-chip endless phase shifter IC's for space diversity combiner

    Publication Year: 1996 , Page(s): 281 - 288
    Cited by:  Papers (5)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (844 KB)  

    This paper describes a one-chip endless phase shifter IC for a space diversity (SD) combiner in multi-carrier digital microwave radio systems; the combiner has an in-phase control circuit in each carrier. The endless phase shifter, which is the key device for this combiner, was miniaturized by using bipolar IC technology, and embedded on a single chip. First, the design methods of this monolithic ... View full abstract»

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  • Improving the robustness of winner-take-all cellular neural networks

    Publication Year: 1996 , Page(s): 329 - 334
    Cited by:  Papers (6)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (492 KB)  

    This paper describes two improvements on a recently proposed winner-take-all (WTA) architecture with linear circuit complexity based on the cellular neural network paradigm. The general design technique originally used to select parameter values is extended to allow values to be optimized for robustness against relative parameter variations as well as absolute variations. In addition, a modified a... View full abstract»

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  • A hyperstable adaptive line enhancer for fast tracking of sinusoidal inputs

    Publication Year: 1996 , Page(s): 304 - 315
    Cited by:  Papers (5)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (964 KB)  

    An IIR adaptive filter is presented for the application of tracking sinusoidal inputs. The filter uses a hyperstable update to provide very fast convergence, and is capable of tracking multiple sinusoids, with the order of the filter being twice the number of sinusoids. The convergence of the filter depends on a certain transfer function being strictly positive real (SPR), and necessary conditions... View full abstract»

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  • ACE: a VLSI chip for Galois field GF(2m) based exponentiation

    Publication Year: 1996 , Page(s): 289 - 297
    Cited by:  Papers (1)  |  Patents (4)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1004 KB)  

    Finite or Galois fields are used in numerous applications like error correcting codes, digital signal processing and cryptography. These applications often require computing exponentiations in GF(2m ) which is a very computationally intensive operation. The methods proposed in the literature achieve exponentiation by iterative methods using repeated multiplications and the hardware impl... View full abstract»

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  • Efficient fast design of three- and higher-dimensional FIR digital filters by analytical least squares method

    Publication Year: 1996 , Page(s): 339 - 344
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (492 KB)  

    An effective method is proposed for designing three- and higher-dimensional FIR digital filters in this paper. The method is based on deriving the closed-form matrix called by the inverse frequency response transformation matrix, such that the filter's coefficients can be computed directly from the given specifications without any iterative procedures and optimization techniques. Design examples a... View full abstract»

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  • Simultaneous spatial separation and direction-of-arrival estimation of wideband sources using bootstrapped algorithms

    Publication Year: 1996 , Page(s): 316 - 328
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1076 KB)  

    This paper presents two versions of a novel adaptive algorithm for simultaneous spatial separation and direction finding of two wideband, uncorrelated sources received by two separated sensors. The algorithm provides estimates of the spatial location of the sources (direction of arrival-DOA) and outputs two signals which are filtered versions of the source signals. We describe the different config... View full abstract»

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  • Choosing nonuniform tap spacings for a tapped-delay-line filter

    Publication Year: 1996 , Page(s): 298 - 303
    Cited by:  Papers (3)  |  Patents (2)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (564 KB)  

    The family of frequency responses that can be generated by adjusting the weights on a tapped-delay-line filter with nonuniformly spaced taps is just the span of a basis set whose elements are arbitrary (as long as linear independence is preserved) frequency shifts of the characterizing function of the set of delays. The characterizing function is just the frequency response that results when unifo... View full abstract»

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  • A fast response split-path median LMS algorithm

    Publication Year: 1996 , Page(s): 344 - 346
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (284 KB)  

    An adaptive median LMS algorithm based on a split FIR filter structure is presented. The algorithm has a better tracking capability and a faster convergence rate by means of reducing the eigenvalue spread of the input correlation matrix. The performance of the adaptive system is evaluated in a line enhancement application. It is found that the algorithm is effective in both the suppression of impu... View full abstract»

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Aims & Scope

This title ceased production in 2003. The current updated title is IEEE Transactions on Circuits and Systems II: Express Briefs.

Full Aims & Scope