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  • Conference paper
    Yavari E, Rahman A, Xu J, Mandic DP, Boric-Lubecke Oet al., 2016,

    Synchrosqueezing an Effective Method for Analyzing Doppler Radar Physiological Signals

    , 38th Annual International Conference of the IEEE-Engineering-in-Medicine-and-Biology-Society (EMBC), Publisher: IEEE, Pages: 263-266, ISSN: 1557-170X
  • Conference paper
    Xia Y, Wang K, Pei W, Blazic Z, Mandic DYet al., 2016,

    A Least Squares Enhanced Smart DFT Technique for Frequency Estimation of Unbalanced Three-Phase Power Systems

    , International Joint Conference on Neural Networks (IJCNN), Publisher: IEEE, Pages: 2762-2766, ISSN: 2161-4393
  • Conference paper
    Talebi SP, Kanna S, Xia Y, Mandic DPet al., 2016,

    A Distributed Quaternion Kalman Filter With Applications to Fly-by-Wire Systems

    , IEEE International Conference on Digital Signal Processing (DSP), Publisher: IEEE, Pages: 30-34
  • Conference paper
    Izhar LI, Elamvazuthi I, Stathaki T, Howell K, Omar Zet al., 2016,

    Multimodal Image Registration for Potential Diagnosis and Monitoring of Morphoea using a Hybrid NGC Method

    , 1st International Conference on Biomedical Engineering (IBIOMED) - Empowering Biomedical Technology for Better Future, Publisher: IEEE, Pages: 47-50
  • Conference paper
    Murray-Bruce J, Dragotti PL, 2016,

    RECONSTRUCTING NON-POINT SOURCES OF DIFFUSION FIELDS USING SENSOR MEASUREMENTS

    , 41st IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Publisher: IEEE, Pages: 4004-4008, ISSN: 1520-6149
  • Conference paper
    Hafezi S, Moore AH, Naylor PA, 2016,

    3D ACOUSTIC SOURCE LOCALIZATION IN THE SPHERICAL HARMONIC DOMAIN BASED ON OPTIMIZED GRID SEARCH

    , 41st IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Publisher: IEEE, Pages: 415-419, ISSN: 1520-6149
  • Conference paper
    Zhang W, Naylor PA, He Z, Zhang Yet al., 2016,

    ON THE EVALUATION OF MULTICHANNEL BLIND SYSTEM IDENTIFICATION FROM THE VIEWPOINT OF SYSTEM EQUALIZATION

    , 15th International Workshop on Acoustic Signal Enhancement (IWAENC), Publisher: IEEE
  • Conference paper
    Izhar LI, Stathaki T, Howell K, 2015,

    Global Based Thermal Image Registration for Diagnosis of Morphoea

    , International Conference for Innovation in Biomedical Engineering and Life Sciences (ICIBEL), Publisher: SPRINGER, Pages: 76-81, ISSN: 1680-0737

    Analyzing and interpreting of thermograms have been increasingly employed in the diagnosis and monitoring of diseases thanks to its non-invasive, non-harmful nature and low cost. This paper presents a thermal image analysis system based on image registration for morphoea disease diagnosis. A novel system is proposed to improve the diagnosis and monitoring of morphoea based on integration with the published lines of Blaschko. In this application, image registration based on global and local registration methods are found inevitable. A modified normalized gradient cross-correlation (NGC) method to reduce large geometrical differences between two multimodal images of different subjects that are represented by smooth gray edge maps is proposed for the global registration approach. It is shown in this paper that the NGC method outperforms phase correlation (PC) method by a lower rate of misregistration. This demonstrates that by using the gradients of the gray edge maps, the performance of the PC based image registration method can be greatly improved.
  • Journal article
    Tagliasacchi M, Visentini-Scarzanella M, Dragotti PL, Tubaro Set al., 2015,

    Identification of transform coding chains

    , IEEE Transactions on Image Processing, Vol: 25, Pages: 1109-1123, ISSN: 1941-0042
  • Conference paper
    Gabillard T, Sridhar V, Manikas A, 2015,

    Comparative Study of 2D Grid Antenna Array Geometries for Massive Array Systems

    , IEEE GLOBECOM 2015, Publisher: IEEE

    In upcoming trends of wireless communications, such as massive MIMO, the number of antennas at the transmitter(TX) and receiver (RX) are expected to increase dramatically, aiming to provide a substantial improvement in system performance and spectral efficiency. However, an increase in the number of antennas also results in an increase in hardware, computational complexity and energy dissipation of the MIMO system. Therefore, the antenna array geometry plays a crucial role in the overall system performance. This paper is concerned with planar antenna array geometries with emphasis given to the family of 2D "grid" arrays and presents an insight into the relation between the array geometry and various performance metrics, such as detection, resolution and data-rate maximization, that may be used in different applications.
  • Journal article
    Xia Y, Jahanchahi C, Nitta T, Mandic DPet al., 2015,

    Performance Bounds of Quaternion Estimators

    , IEEE TRANSACTIONS ON NEURAL NETWORKS AND LEARNING SYSTEMS, Vol: 26, Pages: 3287-3292, ISSN: 2162-237X
  • Journal article
    Dai M, Clerckx B, 2015,

    Hybrid precoding for physical layer multicasting

    , IEEE Communications Letters, Vol: 20, Pages: 228-231, ISSN: 1558-2558

    This work investigates the problem of downlink transmit precoding for physical layer multicasting with a limited number of radio-frequency (RF) chains. To tackle the RF hardware constraint, we consider a hybrid precoder that is partitioned into a high-dimensional RF precoder and a low-dimensional baseband precoder. Considering a total transmit power constraint over the RF chains, the goal is to maximize the minimum (max-min) received signal-to-noise ratio (SNR) among all users. We propose a low complexity algorithm to compute the RF precoder that achieves near-optimal max-min performance. Moreover, we derive a simple condition under which the hybrid precoding driven by a limited number of RF chains incurs no loss of optimality with respect to the fully digital precoding case. Finally, numerical results validate the effectiveness of the proposed algorithm and theoretical findings
  • Conference paper
    Wang WQ, Ling C, 2015,

    Nested array with time-delayers for target range and angle estimation

    , CoSeRa 2015, Publisher: IEEE, Pages: 249-252

    Since a nested phased array cannot directly estimate the range of targets due to range ambiguity, this paper proposes a nested array with diverse time-delayers for target range and angle estimation. The essence is to construct a new array structure by systematically nesting two uniform linear arrays through diverse time-delays which yields a range-dependent receiving array beampattern. Using second-order statistics of the received data, it is capable of providing a dramatic increase of the system degrees-of-freedom which means more sources can be resolved. More importantly, target range and angle can be estimated by exploiting the range-dependent array beampattern. The performance improvements are evaluated by examining the Cramér-Rao lower bounds.
  • Conference paper
    Hu M, sharma D, Doclo S, Brookes D, naylor Pet al., 2015,

    Speaker change detection and speaker diarization using spatial information

    , IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)
  • Conference paper
    Moore AH, Naylor PA, Skoglund J, 2014,

    An Analysis of the Effect of Larynx-Synchronous Averaging on Dereverberation of Voiced Speech

    , European Signal Processing Conference, ISSN: 2219-5491
  • Conference paper
    Stanton R, Gaubitch N, Naylor P, Brookes DMet al., 2014,

    A Differentiable Approximation to Speech Intelligibility Index with Applications to Listening Enhancement

    , AES Intl Conf on Audio Forensics

    The Speech Intelligibility Index is a standardised objective measure for estimating the intelligibility of speech in noise. It is, however difficult to use it in the iterative optimisation of speech enhancement algorithms because it is a discontinuous function of its input parameters. In this paper, we derive an approximation for the Speech Intelligibility Index that is both continuous and differentiable, which allows for more efficient optimisation procedures. The use of the approximation is demonstrated in an application to near-end speech enhancement.
  • Patent
    Naylor PA, 2010,

    P. A. Naylor, “Providing a plurality of audio files with consistent loudness levels but different audio characteristics,” International Patent Patent No. WO/1910/005 823, 2010. [Online]. Available: http: //www.wipo.int/pctdb/en/wo.jsp?WO=2010005823

    , WO/1910/005 823

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