Hidden Markov Models (HMM), ultra wide band (UWB), Voronoi region based approach, signal to noise ratio (SNR)

Nijsure, Y., Chen, Yifan, Litchfield, C. and Rapajic, P.B. (2009) Hidden Markov model for target tracking with UWB radar systems. In: Personal, Indoor and Mobile Radio Communications. Institute of Electrical and Electronic Engineers, Inc, Piscataway, NJ, USA, pp. 2065-2069. ISBN 978-1-4244-5123-4 (online), 978-1-4244-5122-7 (print) (doi:10.1109/PIMRC.2009.5450337)

OFDM, subcarrier allocation, call admission control, call blocking probability, bandwidth utilization, queueing system, wireless multiservice networks

Zhang, Yan, Chen, Yifan, He, Jianhua, Wang, Cheng-Xiang and Vasilakos, Athanasios V. (2009) Call admission control algorithms in OFDM-based wireless multiservice networks. Wireless Personal Communications, 50 (1). pp. 99-114. ISSN 0929-6212 (Print), 1572-834X (Online) (doi:10.1007/s11277-008-9540-z)

analytical results, channel conditions, cognitive intelligence, domestic environments, location tracking, network performance analysis, numerical example, potential applications, randomly distributed, remote monitoring, source localization, system architectures, time of arrival estimation, ultra-wideband radio frequency identifications,

Chen, Y. and Rapajic, P. (2008) Ultra-wideband cognitive interrogator network for indoor location tracking - part 1: system architecture and network performance analysis. 2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2008. Institute of Electrical and Electronics Engineers, Inc., Piscataway, NJ, USA, pp. 1-5. ISBN 9781424426447 (doi:10.1109/PIMRC.2008.4699464)

antenna measurements, area measurement, biological system modeling, body sensor networks, delay effects, enterprise resource planning, humans, pulse amplifiers, time domain analysis, ultra wideband technology

Chen, Yifan, Teo, Jianqi, Lai, Joshua, Gunawan, Erry, Low, Kaysoon, Soh, Cheongboon and Rapajic, Predrag (2008) Cooperative UWB body area networking: channel measurement and diversity analysis. In: 2008 IEEE 10th International symposium on spread spectrum techniques and applications. IEEE Conference Publications . Institute of Electrical and Electronics Engineers, Inc, Piscataway, NJ, USA, pp. 303-308. ISBN 9781424422036 (doi:10.1109/ISSSTA.2008.61)

block diagonalization, co-operative base stations, distributed algorithm, distributed MIMO, information exchanges, inter-user interference, iterative computation, multi-cell, multi-user, partial channel state information, suboptimal solution, system throughput

Morato, M., Chen, Yifan, Yuen, Chau and Lei, Zhongding (2011) Decentralized block diagonalization algorithms for distributed MIMO systems. In: International Symposium on Wireless and Pervasive Computing, ISWPC 2011. IEEE Computer Society, Piscataway, USA, pp. 1-5. ISBN 9781424498680 (Print), 9781424498673 (Online) (doi:10.1109/ISWPC.2011.5751334)

body area network, ultra-wideband system, on-body propagation, channel modeling, time-domain measurements, cooperative networks, diversity

Chen, Yifan, Teo, Jianqi, Lai, Joshua Chong Yue, Gunawan, Erry, Low, Kay Soon, Soh, Cheong Boon and Rapajic, Predrag B. (2009) Cooperative communications in ultra-wideband wireless body area networks: Channel modeling and system diversity analysis. IEEE Journal on Selected Areas in Communications, 27 (1). pp. 5-16. ISSN 0733-8716 (doi:10.1109/JSAC.2009.090102)

breast cancer detection, cavity perturbation technique, complex permittivity, contrast-enhanced, dielectric contrasts, different frequency, frequency spectra, bubbles, orders of magnitude

Ogunlade, O., Chen, Yifan and Kosmas, P. (2010) Measurement of the complex permittivity of microbubbles using a cavity perturbation technique for contrast enhanced ultra-wideband breast cancer detection. In: 2010 Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC'10. IEEE Computer Society, Piscataway, USA, pp. 6733-6736. ISBN 978424441235 (doi:0.1109/IEMBS.2010.5626016)

breast cancer detection, pulse design, pulse shape, time-reversal(TR), ultrawideband (UWB) microwave imaging,

Chen, Y., Gunawan, E., Low, K. S., Wang, S. C., Soh, C. B. and Putti, T. C. (2008) Time-reversal ultrawideband breast imaging: pulse design criteria considering multiple tumors with unknown tissue properties. IEEE Transactions on Antennas and Propagation, 56 (9). pp. 3073-3077. ISSN 0018-926X (doi:10.1109/TAP.2008.928811)

breast lesion, localized malignant lesion, benign lesion, ultrawideband (UWB), backscatter breast response, simulation study, two-dimensional (2D) numerical breast model, antenna array

Teo, Jianqi, Chen, Yifan, Soh, Cheong Boon, Gunawan, E., Low, Kay Soon, Putti, T.C. and Wang, Shih-Chang (2010) Breast lesion classification using ultrawideband early time breast lesion response. IEEE Transactions on Antennas and Propagation, 58 (8). pp. 2604-2613. ISSN 0018 926X (doi:10.1109/TAP.2010.2050423)

breast lesions, lesion classification, ultra wideband systems, radar based UWB, breast cancer detection, microwave breast screening, UWB breast screening

Teo, Jianqi, Chen, Yifan, Soh, Cheong Boon, Gunawan, Erry, Low, Kay Soon, Putti, Thomas Choudary and Wang, Shih-Chang (2010) An overview of radar based ultra wideband breast cancer detection algorithms. International Journal of Ultra Wideband Communications and Systems, 1 (4). pp. 273-281. ISSN 1758-728X (Print), 1758-7298 (Online) (doi:10.1504/IJUWBCS.2010.034308)

breast, cancer, lesions, microwave imaging, shape

Kosmas, P., Laranjeira, S., Dixon, J.H., Li, X. and Chen, Y. (2010) Time reversal microwave breast imaging for contrast-enhanced tumor classification. In: Engineering in Medicine and Biology Society (EMBC), 2010 Annual International Conference of the IEEE. Institute of Electrical and Electronics Engineers, Inc., Piscataway, NJ, USA, pp. 708-711. ISBN 978-1-4244-4123-5 (print) ISSN 1557-170X (online) (doi:10.1109/IEMBS.2010.5626158)

cancer detection, dielectric-properties, tissues, time, tumors, shape, resonances, scattering, algorithm

Chen, Y., Gunawan, E., Low, K. S., Wang, S. C., Soh, C. B. and Putti, T. C. (2008) Effect of lesion morphology on microwave signature in 2-D ultra-wideband breast imaging. IEEE Transactions on Biomedical Engineering, 55 (8). pp. 2011-2021. ISSN 0018-9294 (doi:10.1109/TBME.2008.921136)

carrier frequency offset (CFO), OFDM, coarse estimation, maximum-likelihood estimation

Yang, Feng, Zhang, Zhenrong and Chen, Yifan (2009) Maximum-likelihood estimator for coarse carrier frequency offset estimation in OFDM systems. Wireless Personal Communications, 49 (1). pp. 55-66. ISSN 0929-6212 (Print), 1572-834X (Online) (doi:10.1007/s11277-008-9555-5)

cognitive interrogator network (COIN), ultra-wideband radio frequency identification (UWB-RFID), sequential-hypothesis-testing framework

Chen, Y. and Rapajic, P. (2010) Ultra-wideband cognitive interrogator network: Adaptive illumination with active sensors for target localisation. Communications, IET, 4 (5). pp. 573-584. ISSN 1751 8628 (doi:10.1049/iet-com.2009.0495)

cognitive interrogator-sensor networks (CISNs), discrete memoryless channel (DMC), finite-state Markov channel (FSMC)

Chen, Yifan and Woo, Wai Lok (2010) On modeling of cognitive interrogator-sensor network: Layered discrete memoryless channel and finite-state Markov channel. In: 2nd International Workshop on Cognitive Information Processing (CIP), 2010. 2nd International Workshop on Cognitive Information Processing (CIP), 2010 . IEEE Xplore Digital Library, Elba, pp. 11-16. ISBN 978-1-4244-6457-9 (print) ISSN 2150 4938 (online) (doi:10.1109/CIP.2010.5604122)

diversity gains, generalised distributed antenna systems, cooperative users, access points, user terminals, network topology, stochastic ray-tracing, power-decaying pattern

Chen, Y., Hu, L., Yuen, C., Zhang, Y., Zhang, Z. and Rapajic, P. (2009) Intrinsic measure of diversity gains in generalised distributed antenna systems with cooperative users. IET Communications, 3 (2). pp. 209-222. ISSN 1751-8628 (Print), 1751-8636 (Online) (doi:10.1049/iet-com:20080064)

information-theoretic approach, excitation ultra wideband (UWB) waveforms, cognitive radar network, mutual information (MI), positioning algorithm, signal-to-noise ratio (SNR), delay-Doppler resolution, ambiguity function (AF)

Nijsure, Y., Chen, Y., Rapajic, P., Yuen, C., Chew, Y.H. and Qin, T.F. (2010) Information-theoretic algorithm for waveform optimization within ultra wideband cognitive radar network. In: International Conference on Ultra-Wideband (ICUWB). IEEE International Conference on Ultra-Wideband (ICUWB) . IEEE Xplore Digital Library, Nanjing, pp. 1-4. ISBN 978-1-4244-5305-4 (print) ISSN 978-1-4244-5306-1 (online) (doi:10.1109/ICUWB.2010.5616308)

medical and patient monitoring, sensing technologies and signal processing, vital sign, ultra-wideband, distributed cognitive radar, respiration rate estimation,

Chen, Yifan and Rapajic, Predrag (2008) Human respiration rate estimation using ultra-wideband distributed cognitive radar system. International Journal of Automation and Computing, 5 (4). pp. 325-333. ISSN 1476-8186 (doi:10.1007/s11633-008-0325-3)

multiple-input multiple-output (MIMO), ultrawideband (UWB), breast imaging, morphology-dependent UWB microwave backscatter, MIMO radar, data-fusion rules

Chen, Yifan, Craddock, I.J., Kosmas, P., Ghavami, M. and Rapajic, P. (2010) Multiple-input multiple-output radar for lesion classification in ultrawideband breast imaging. IEEE Journal of Selected Topics in Signal Processing, 4 (1). pp. 187-201. ISSN 1932-4553 (doi:10.1109/JSTSP.2009.2038975)

novel channel model, two-hop decentralized wireless relay network (DWRN), wideband directional multipath channels, information azimuth-delay spectrum (IADS), power azimuth-delay spectrum (PADS), circular random network (CRN)

Chen, Yifan and Rapajic, P. (2009) Novel channel description method for decentralized wireless relay networks. In: Microwave Conference 2009. Institute of Electrical and Electronic Engineers, Inc, Piscataway, NJ, USA, pp. 2164-2167. ISBN 978-1-4244-2802-1 (e-ISBN), 978-1-4244-2801-4 (print) (doi:10.1109/APMC.2009.5385513)

radio channels, model, antenna systems,

Chen, Y., Yuen, C., Zhang, Y. and Zhang, Z. (2007) Diversity gains of generalised distributed antenna systems with cooperative users. 2007 IEEE Wireless Communications & Networking Conference. IEEE Explore, Piscataway, NJ, USA, pp. 797-802. ISBN 1424406587 (doi:10.1109/WCNC.2007.152)

radio propagation, office buildings, randomly distributed arrays, power azimuthal spectrum (PAS), power delay spectrum (PDS), deterministic angle clustering, ray-tracing (RT), geometric channel models (GCMs)

Chen, Y., Zhang, Z., Hu, L. and Rapajic, P.B. (2009) Geometry-based statistical model for radio propagation in rectangular office buildings. Progress In Electromagnetics Research B, 17. pp. 187-212. ISSN 1937-6472 (doi:10.2528/PIERB09080603)

two-hop decentralized wireless relay network (DWRN), information azimuth-delay spectrum (IADS), power azimuth-delay spectrum (PADS), elliptical random network (ERN), uniformly distributed relay nodes

Chen, Yifan and Rapajic, Predrag (2010) Decentralized wireless relay network channel modeling: An analogous approach to mobile radio channel characterization. IEEE Transactions on Communications, 58 (2). pp. 467-473. ISSN 0090-6778 (doi:10.1109/TCOMM.2010.02.080315)

ultra wideband (UWB) breast imaging, morphology-dependent backscatter signature, late-time target response

Chen, Yifan, Craddock, I.J. and Kosmas, P. (2010) Feasibility study of lesion classification via contrast-agent-aided UWB breast imaging. IEEE Transactions on Biomedical Engineering, 57 (5). pp. 1003-1007. ISSN 0018-9294 (doi:10.1109/TBME.2009.2038788)

vector precoding, multiple input multiple output broadcast channels (MIMO BC), zero forcing(ZF), vector precoding technique, decentralized multi-user detection, Moore-Penrose pseudo inverse

Nijsure, Y., Litchfield, C., Chen, Yifan and Rapajic, P.B. (2009) Vector precoding scheme for multi-user MIMO systems. In: Vehicular Technology Conference Fall (VTC 2009-Fall). Institute of Electrical and Electronic Engineers, Inc, Piscataway, NJ, USA, pp. 1-5. ISBN 978-1-4244-2514-3 (print), 978-1-4244-2515-0 (electronic) ISSN 1090-3038 (doi:10.1109/VETECF.2009.5378987)

wireless communications, stochastic processes, maximum entropy, stochastic rays, channel models

Hu, Luo-quan, Zhu, Hong-bo and Chen, Yifan (2009) Probability distribution of stochastic rays and its applications. Journal of Electronics & Information Technology, 31 (6). pp. 1405-1409. ISSN 1009-5896 (doi:10.3724/SP.J.1146.2007.01018)

wireless systems,

Chen, Yifan, Hu, Luoquan, Yuen, Chau, Zhang, Yan, Zhang, Zhenrong and Rapajic, Predrag (2009) Cooperative diversity of generalized distributed antenna systems. In: Zhang, Yan, Chen, Hsiao-Hwa and Guizani, Mohsen, (eds.) Cooperative Wireless Communications. Wireless Networks and Mobile Communications . Auerbach Publications, Boca Raton, Fl., USA, pp. 233-258. ISBN 978-1420064698