Search Results - "Wanjun Zhi"

Near-Field Source Localization via Symmetric Subarrays by Wanjun Zhi, Chia, M.Y.-W.

“…We propose a near-field source localization algorithm with one-dimensional (1-D) search via symmetric subarrays. By dividing the uniform linear array (ULA)…”
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Entropy-Based Time Window for Artifact Removal in UWB Imaging of Breast Cancer Detection by Wanjun Zhi, Chin, F.

“…In this letter, we propose an entropy-based time window function for artifact removal in ultra-wideband (UWB) imaging of breast cancer detection. The artifact…”
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ML-based frequency estimation and synchronization of frequency hopping signals by Ko, C.C., Wanjun Zhi, Chin, F.

“…A maximum likelihood (ML)-based algorithm for frequency estimation and synchronization of frequency hopping signals is proposed in this paper. By using a…”
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DOA estimation under unknown mutual coupling and multipath by Qimeng Bao, Ko, C.C., Wanjun Zhi

“…We propose a new method for direction of arrival (DOA) estimation in the presence of multipath propagation and mutual coupling for a frequency hopping (FH)…”
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Near-Field Source Localization via Symmetric Subarrays by Wanjun Zhi, Chia, M. Y. -W.

“…We propose a near-field source localization algorithm with one-dimensional (1-D) search via symmetric subarrays. By dividing the uniform linear array (ULA)…”
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Robust transmit beamforming in cognitive radio networks by Wanjun Zhi, Ying-Chang Liang, Chia, M.

“…This paper investigates the design of robust transmit beamforming for the secondary user (SU) when it co-exists with the primary user (PU) in a cognitive radio…”
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System performance of IEEE 802.15.4 low rate wireless PAN using UWB as alternate-PHY layer by Chin, F., Wanjun Zhi, Chi-Chung Ko

“…Personal area networks (PANs) are expected to play an important role in future mobile ad-hoc wireless communications and information systems. This paper…”
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BER performance of pulsed UWB system in the presence of colored timing jitter by Poh Boon Hor, Ko, C.C., Wanjun Zhi

“…Ultra wideband systems impose a high demand on the jitter performance of the system clock. The effects of white Gaussian jitter have been considered in the…”
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ML-based frequency and frequency transition time estimation of frequency hopping signals by Wanjun Zhi, Ko, C.C., Chin, F.

“…An ML-based algorithm for frequency estimation and synchronization of frequency hopping signals is proposed in this paper. By using a two-hop signal model…”
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Near Field UWB LCMV Imaging for Breast Cancer Detection with Entropy Based Artifacts Removal by Wanjun Zhi, Chin, F., Chia, M.

“…In this paper, we propose a near field wideband linear constraint minimum variance (LCMV) beamforming with entropy based artifacts removal for UWB imaging in…”
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Capacity comparison of multi-element antenna systems by Wanjun Zhi, Chin, F., Ko, C.C.

“…We investigate the capacity of multi-element antenna systems employing three practical techniques, space diversity, spatial multiplexing and beamforming. We…”
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Multipath signals tracking for frequency hopping systems by Ningkun Peng, Ko, C.C.

“…A non-digitized method based on correlation measurement is proposed for tracking multipath frequency hopping (FH) signals. By using the cross correlation of…”
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Multi-hop ML based delay and angle estimation for multipath wideband FH signals by Wanjun Zhi, Ko, C.C., Chin, F.

“…A multi-hop ML (MHML) algorithm for the joint angle and delay estimation of a wideband frequency hopping (FH) source is proposed to estimate multipath delays…”
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Effects of plant species coexistence on soil enzyme activities and soil microbial community structure under Cd and Pb combined pollution by Gao, Yang, Zhou, Pei, Mao, Liang, Zhi, Yueer, Zhang, Chunhua, Shi, Wanjun

“…The relationship between plant species coexistence and soil microbial communities under heavy metal pollution has attracted much attention in ecology. However,…”
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System performance of UWB based low rate wireless personal area network by Chin, F., Zhi, W., Ko, C.-C.

“…Personal area networks (PANs) are expected to play an important role in future mobile ad-hoc wireless communications and information systems. This paper…”
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Near Field Imaging for Breast Cancer Detection by UWB Minimum Variance Beamforming by Zhi, W., Chin, F., Chia, M.Y.-W.

“…In this paper, we propose a near field imaging method for breast cancer detection by using coherent-signal-subspace-based wideband minimum variance…”
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DOA estimation in the presence of unknown mutual coupling and multipath propagation in a frequency hopping system by Qiming Bao, Ko, C.C., Wanjun Zhi

“…We propose a new method for DOA estimation in the presence of multipath propagation and mutual coupling (MC) for a frequency hopping (FH) system. We take MC…”
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