• Adaptive active control of free space acoustic noise 

      Ardekani, Iman; Abdulla, W. H. (Published by the Acoustical Society of America through the American Institute of Physics, 2013)
      This paper concerns adaptive active control of acoustic noise in free space. Conventional adaptive active noise control algorithms are efficient in acoustic ducts or headphones; however, they are very sensitive when being ...
    • Bayesian parameter estimation of Euler-Bernoulli beams 

      Ardekani, Iman; Kaipio, J.; Sharifzadeh, Hamid (2018-11)
      This paper develops a statistical signal processing algorithm for parameter estimation of Euler-Bernoulli beams from limited and noisy measurement. The original problem is split into two reduced-order sub-problems coupled ...
    • Effect of channel impairments on radiometric fingerprinting 

      Rehman, Saeed; Sowerby, K.W.; Shafiq, Alam; Ardekani, Iman; Komosny, Dan (IEEE Communications Society, 2015-12)
      To increase network security and mitigate identity theft attacks, much of the research is focused on traditional bit-level algorithmic. In conventional wireless networks, security issues are primarily considered above the ...
    • An efficient programming framework for socially assistive robots based on separation of robot behavior description from execution 

      Jayawardena, Chandimal; Kuo, I-Han; MacDonald, B.A. (IEEE Computer Society, 2013)
      One of the main challenges in socially assistive robotics is providing flexible and easy-to-use programming tools for users. Unlike other robots, designing socially assistive robots includes the subject-matter-experts ...
    • The global cyber security workforce : an ongoing human capital crisis 

      Fourie, Leon; Pang, Shaoning; Kingston, Tamsin; Hettema, Hinne; Watters, Paul; Sarrafzadeh, Hossein (Global Business and Technology Association, 2014-07)
      Cyber threats pose substantial risk to government, businesses and individuals. There is an alarming shortage of trained professionals and academic programs to train and produce these professionals. Many countries including ...
    • Maori-English machine translation 

      Mohaghegh, Mahsa; McCauley, Michael; Mohammadi, Mehdi (2014-04-24)
      In this paper we present our research over machine translation for Maori to English language pairs. The aim of this research is to create a lookup table for Maori-English words or phrases that are extracted from a set of ...
    • Maximum a posteriori adjustment of adaptive transversal filters in active noise control 

      Ardekani, Iman; Zhang, X.; Sharifzadeh, Hamid; Kaipio, J. (2017-12)
      This paper develops a novel approach to adaptive active noise control based on the theory of Bayesian estimation. Control system parameters are considered as statistical variables and a formulation for the joint probability ...
    • A novel adaptive active noise control algorithm based on Tikhonov regularisation 

      Ardekani, Iman; Sakhaee, N.; Sharifzadeh, Hamid; Barmada, Bashar; Lovell, G. (2018-11)
      This paper proposes a novel adaptive active noise control algorithm based on Tikhonov regularization theory. A regularized cost function consisting of the weighted sum of the most recent samples of the residual noise and ...
    • Perception of synthetic speech with emotion modelling delivered through a robot platform: an initial investigation with older listeners 

      Igic, Aleksandar; Watson, Catherine I.; Stafford, R.Q.; Broadbent, E.; Jayawardena, Chandimal; MacDonald, B.A. (2010)
      In this paper we give results of an initial investigation into the perception of synthetic speech delivered through a robotic platform. The robotic speech was judged by 19 residents and 10 staff of a New Zealand retirement ...
    • Physical classification and recent developments of active noise control systems 

      Munir, M.W.; Abdulla, W. H.; Ardekani, Iman; Patel, N. (Association for Computing Machinery (ACM), 2017-11)
      The rapid growth of the industry has a major effect on the environmental noise pollution, and it ranks second to the air pollution that adversely affects the human health. Passive noise control techniques are impractical ...
    • Portability of an RF fingerprint of a wireless transmitter 

      Rehman, Saeed; Burki, Shafiq; Ardekani, Iman (IEEE CNS, 2014)
      In conventional wireless networks, security issues are primarily considered above the physical layer and are usually based on bit-level algorithms to establish the identity of a legitimate wireless device. Physical layer ...
    • Portability of an RF fingerprint of a wireless transmitter 

      Rehman, Saeed; Sowerby, K.W.; Alam, Shafiq; Ardekani, Iman (2014-10)
      In conventional wireless networks, security issues are primarily considered above the physical layer and are usually based on bitlevel algorithms to establish the identity of a legitimate wireless device. Physical layer ...
    • Psychoacoustically motivated active noise control at remote locations 

      Munir, M.W.; Abdulla, W. H.; Ardekani, Iman (2019)
      Active noise control (ANC) is an effective way to cancel the low-frequency noise. The conventional ANC system creates the ‘zone of quiet’ by minimizing the mean square error (MSE) at the location of an error microphone. ...
    • Radio Frequency fingerprinting and its challenges 

      Rehman, Saeed; Sowerby, K.W.; Alam, Shafiq; Ardekani, Iman (IEEE CNS, 2014)
      RF fingerprinting aims to develop a unique RF fingerprint for a wireless device that can be used as an identity, in the same way a biological fingerprint operates, to improve the security and privacy of wireless communication. ...
    • Remote FxLMS algorithm for active control of sound in remote locations 

      Ardekani, Iman; Abdulla, W. H.; Rehman, Saeed (Asia-Pacific Signal and Information Processing Association (APSIPA), 2014)
      Available adaptive control algorithms can only create a silent point at the locations of an error microphone. In this case, the error microphone occupies a part of the zone of quiet established around the silent point, ...
    • Smart task orderings for active online multitask learning 

      Pang, Paul; An, Jianbei; Zhao, Jing; Li, Xiaosong; Ban, Tao; Inoue, Daisuke; Sarrafzadeh, Hossein (Society for Industrial and Applied Mathematics, Activity Group on Data Mining and Analytics, 2014-04-26)
      This paper promotes active oMTL (i.e., Online Multitask Learning with task selection) by proposing two smart task ordering approaches: QR-decomposition Ordering and Minimal-loss Ordering, in which the optimal sequence of ...
    • Stability of residual acoustic noise variance in active control of stochastic noise 

      Ardekani, Iman; Abdulla, W. H. (Institute of Electrical and Electronics Engineers, 2013)
      This paper concerns about the theoretical stability of the adaptation process performed by the Filtered-x Least Mean Square (FxLMS) algorithm in active control of acoustic noise. A dynamic model for the Variance of Residual ...

       Unitec Institute of Technology, Private Bag 92025, Victoria Street West, Auckland 1142