30 citations · 69 across the 21 of their papers we have counts for
9 papers · 1 filter
An Efficient Spectral Leakage Filtering for IEEE 802.11af in TV White Space
Phu Xuan Nguyen, Thinh Hung Pham, Trang Hoang +1
Orthogonal frequency division multiplexing (OFDM) has been widely adopted for modern wireless standards and become a key enabling technology for cognitive radios. However, one of i…
Cooperative Prediction-and-Sensing Based Spectrum Sharing in Cognitive Radio Networks
Van-Dinh Nguyen, Oh-Soon Shin
This paper proposes prediction-and-sensing based spectrum sharing, a new spectrum-sharing model for cognitive radio networks, with a time structure for each resource block divided…
Enhancing PHY Security of Cooperative Cognitive Radio Multicast Communications
Van-Dinh Nguyen, Trung Q. Duong, Oh-Soon Shin +2
In this paper, we propose a cooperative approach to improve the security of both primary and secondary systems in cognitive radio multicast communications. During their access to t…
On the Design of Secure Full-Duplex Multiuser Systems under User Grouping Method
Van-Dinh Nguyen, Hieu V. Nguyen, Octavia A. Dobre +1
Consider a full-duplex (FD) multiuser system where an FD base station (BS) is designed to simultaneously serve both downlink users and uplink users in the presence of half-duplex e…
Precoder Design for Signal Superposition in MIMO-NOMA Multicell Networks
Van-Dinh Nguyen, Hoang Duong Tuan, Trung Q. Duong +2
The throughput of users with poor channel conditions, such as those at a cell edge, is a bottleneck in wireless systems. A major part of the power budget must be allocated to serve…
Joint Fractional Time Allocation and Beamforming for Downlink Multiuser MISO Systems
Van-Dinh Nguyen, Hoang Duong Tuan, Trung Q. Duong +2
It is well-known that the traditional transmit beamforming at a base station (BS) to manage interference in serving multiple users is effective only when the number of users is les…
Robust Beamforming for Secrecy Rate in Cooperative Cognitive Radio Multicast Communications
Van-Dinh Nguyen, Trung Q. Duong, Oh-Soon Shin +2
In this paper, we propose a cooperative approach to improve the security of both primary and secondary systems in cognitive radio multicast communications. During their access to t…
Joint Beamforming and Antenna Selection for Sum Rate Maximization in Cognitive Radio Networks
Van-Dinh Nguyen, Chuyen T. Nguyen, Hieu V. Nguyen +1
This letter studies joint transmit beamforming and antenna selection at a secondary base station (BS) with multiple primary users (PUs) in an underlay cognitive radio multiple-inpu…
Spectral Efficiency of Full-Duplex Multiuser System: Beamforming Design, User Grouping, and Time Allocation
Van-Dinh Nguyen, Hieu V. Nguyen, Chuyen T. Nguyen +1
Full-duplex (FD) systems have emerged as an es- sential enabling technology to further increase the data rate of wireless communication systems. The key idea of FD is to serve mult…