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- research-articleApril 2023
On the performance of non‐contiguous carrier aggregation in presence of subspectral errors
AbstractCarrier aggregation can not only increase communication bandwidth, but also improve spectrum efficiency and communication security. Considering the non‐contiguous multi‐subspectrum aggregation for the spectrum division transmission of arbitrary ...
The paper analyzes the performance of the non‐contiguous carrier aggregation in the presence of inter‐subspectrum errors. Although, the analyzed subspectra aggregation in physical layer is partially different from the mainstream carrier aggregation ...
- research-articleNovember 2021
Fast‐Tracker 2.0: Improving autonomy of aerial tracking with active vision and human location regression
IET Cyber-Systems and Robotics (CSY2), Volume 3, Issue 4Pages 292–301https://doi.org/10.1049/csy2.12033AbstractIn recent years, several progressive studies promote the development of aerial tracking. One of the representative studies is our previous work Fast‐Tracker which is applicable to various challenging tracking scenarios. However, it suffers from ...
- research-articleFebruary 2021
Joint AGC and receiver design for large‐scale MU‐MIMO systems with low‐resolution signals in C‐RANs
IET Communications (CMU2), Volume 14, Issue 21Pages 3791–3801https://doi.org/10.1049/iet-com.2020.0546Large‐scale multi‐user multiple‐input multiple‐output (MU‐MIMO) systems and cloud radio access networks (C‐RANs) are promising technologies for the fifth generation (5G) of wireless networks. In this context, the use of low‐resolution analogue‐to‐digital ...
- research-articleApril 2020
Spectrum shaping using NC‐OFDM for cognitive radio applications
IET Communications (CMU2), Volume 14, Issue 7Pages 1120–1128https://doi.org/10.1049/iet-com.2018.5945Cognitive radio (CR) is an innovative technology that supports dynamic spectrum access to utilise the spectrum more efficiently in an opportunistic manner without interfering with the licensed users. Multi‐carrier modulation techniques such as orthogonal ...
- research-articleFebruary 2020
IPDDF: an improved precision dense descriptor based flow estimation
CAAI Transactions on Intelligence Technology (CIT2), Volume 5, Issue 1Pages 49–54https://doi.org/10.1049/trit.2019.0052Large displacement optical flow algorithms are generally categorised into descriptor‐based matching and pixel‐based matching. Descriptor‐based approaches are robust to geometric variation, however they have inherent localisation precision limitation due ...
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- research-articleJanuary 2020
Multiscale bilateral filtering to detect 3D interest points
The detection of 3D interest points is a central problem in computer graphics, computer vision, and pattern recognition. It is also an important preprocessing step in the analysis of 3D model matching. Although studied for decades, detecting 3D interest ...
- research-articleOctober 2019
Nyquist filter design
IET Communications (CMU2), Volume 13, Issue 16Pages 2573–2579https://doi.org/10.1049/iet-com.2018.6132Designing a new pulse‐shaping filter that satisfies the Nyquist condition to mitigate inter‐symbol interference and achieve better stopband attenuation is a new step towards the development of next‐generation mobile communication systems. In this study, ...
- research-articleJune 2019
Simplified and accurate BER analysis of magnitude modulated M‐PSK signals
IET Communications (CMU2), Volume 13, Issue 10Pages 1443–1448https://doi.org/10.1049/iet-com.2018.5435In this work, the authors consider phase shift keying (PSK)‐type signals with very compacted spectrum and low envelope fluctuations obtained through the use of magnitude modulation (MM) techniques and stringent roll‐off pulse shaping filtering. The ...
- research-articleApril 2019
Iterative smoothing filtering schemes by using clipping noise‐assisted signals for PAPR reduction in OFDM‐based carrier aggregation systems
Aggregating a lot of subcarriers will generate high peak‐to‐average power ratio (PAPR) which makes the overall system performance degradation. Among the existing PAPR reduction methods for orthogonal frequency‐division multiplexing (OFDM)‐based systems, ...
- research-articleJanuary 2019
Correlation‐guided multi‐object tracking with correlation feature transfer
IET Computer Vision (CVI2), Volume 13, Issue 2Pages 139–145https://doi.org/10.1049/iet-cvi.2018.5011Here, the authors propose a correlation‐guided Monte Carlo Markov chain (MCMC) solver to promote the efficiency for tracking multiple objects under recursive Bayesian filtering framework. Instead of randomly proposing the target location according to ...
- research-articleJanuary 2019
Fusion of infrared and visible images with Gaussian smoothness and joint bilateral filtering iteration decomposition
Edge‐preserving filters have been applied to Multi‐Scale Decomposition (MSD) for fusion of infrared and visible images. Traditional edge‐preserving MSDs may hardly make satisfied structural separation from details to cause fusion performance degradation. ...
- research-articleOctober 2018
Cyclostationarity‐based joint sensing and equalisation of fast convolution‐based DWPT block‐filtered orthogonal frequency division multiplexing for fifth‐generation wireless systems
IET Communications (CMU2), Volume 12, Issue 19Pages 2460–2469https://doi.org/10.1049/iet-com.2018.5455Traditional cyclic prefix‐orthogonal frequency division multiplexing is a popular multicarrier modulation (MCM) scheme, which provides advantages of good bandwidth utilisation and simplicity in transceiver design. However, the waveform suffers from poor ...
- research-articleAugust 2018
Palmprint recognition using a modified competitive code with distinctive extended neighbourhood
IET Computer Vision (CVI2), Volume 12, Issue 8Pages 1151–1162https://doi.org/10.1049/iet-cvi.2018.5306In recent years, palmprint recognition has made great progress and many methods have been put forward. The extraction of robust orientation features and finding efficient matching strategies are two key points for palmprint recognition. Traditional coding ...
- research-articleJuly 2018
Iterative power allocation for throughput maximisation in IA‐based cellular networks: two‐game approach
IET Communications (CMU2), Volume 12, Issue 14Pages 1678–1685https://doi.org/10.1049/iet-com.2017.0853As a promising interference management technique, interference alignment (IA) was proposed for improving system capacity and spectral efficiency by precoding and filtering design. However, the previous works assumed the equal power allocation among data ...
- research-articleJune 2018
Optimisation of mobile intelligent terminal data pre‐processing methods for crowd sensing
CAAI Transactions on Intelligence Technology (CIT2), Volume 3, Issue 2Pages 101–113https://doi.org/10.1049/trit.2018.0013Sensor data pre‐processing is an essential phase of crowd sensing application. Existing studies do not effectively solve the problem, and there still exist various sensor data pre‐processing optimisation problems at the acquisition end in crowd‐sensing ...
- research-articleApril 2018
Extended cuckoo search‐based kernel correlation filter for abrupt motion tracking
IET Computer Vision (CVI2), Volume 12, Issue 6Pages 763–769https://doi.org/10.1049/iet-cvi.2017.0554Kernelised correlation filter (KCF)‐based trackers have recently attracted considerable attention due to their exciting accuracy and efficiency. Numerous improvements have been made later for coping with scales variation or partial occlusion etc. However, ...
- research-articleApril 2018
Visual multiple‐object tracking for unknown clutter rate
IET Computer Vision (CVI2), Volume 12, Issue 5Pages 728–734https://doi.org/10.1049/iet-cvi.2017.0600In multi‐object tracking applications, model parameter tuning is a prerequisite for reliable performance. In particular, it is difficult to know statistics of false measurements due to various sensing conditions and changes in the field of views. In this ...
- research-articleFebruary 2018
Synchronisation algorithm for OFDM/OQAM systems based on zero autocorrelation code
In this study, the authors first propose a sequence with the impulse‐like autocorrelation property named zero autocorrelation code (ZAC) for orthogonal frequency division multiplexing (OFDM) based on offset quadrature amplitude modulation (OQAM) systems. ...
- research-articleDecember 2017
Boosting landmark retrieval baseline with burstiness detection
IET Computer Vision (CVI2), Volume 12, Issue 3Pages 312–321https://doi.org/10.1049/iet-cvi.2016.0504In image retrieval, the bag‐of‐visual‐words model‐based approaches combined with the spatial verification (SP) post‐processing step have achieved considerable progress. However, in practice, especially for retrieving landmark images, the authors have ...
- research-articleNovember 2017
Doppler‐robust high‐spectrum‐efficiency VCM‐OFDM scheme for low Earth orbit satellites broadband data transmission
High‐efficiency satellite‐ground downlink data transmission system is being demanded to support increasing volume of data with limited spectrum resource. Considering the dynamic link conditions due to the orbital motion of low Earth orbit (LEO) satellite, ...