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- Agency for Science, Technology and ResearchSG266 papers
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23 papers · 1 filter
Delay-Throughput Tradeoff for Supportive Two-Tier Networks
Long Gao, Rui Zhang, Changchuan Yin +1
Consider a static wireless network that has two tiers with different priorities: a primary tier vs. a secondary tier. The primary tier consists of randomly distributed legacy nodes…
Multi-User SISO Precoding based on Generalized Multi-Unitary Decomposition for Single-carrier Transmission in Frequency Selective Channel
Wee Seng Chua, Chau Yuen, Yong Liang Guan +1
In this paper, we propose to exploit the richly scattered multi-path nature of a frequency selective channel to provide additional degrees of freedom for desigining effective preco…
Efficient Defence against Misbehaving TCP Receiver DoS Attacks
Aldar C-F. Chan
The congestion control algorithm of TCP relies on correct feedback from the receiver to determine the rate at which packets should be sent into the network. Hence, correct receiver…
Cognitive Beamforming Made Practical: Effective Interference Channel and Learning-Throughput Tradeoff
Rui Zhang, Feifei Gao, Ying-Chang Liang
This paper studies the transmit strategy for a secondary link or the so-called cognitive radio (CR) link under opportunistic spectrum sharing with an existing primary radio (PR) li…
Investigation on Multiuser Diversity in Spectrum Sharing Based Cognitive Radio Networks
Rui Zhang, Ying-Chang Liang
A new form of multiuser diversity, named \emph{multiuser interference diversity}, is investigated for opportunistic communications in cognitive radio (CR) networks by exploiting th…
Optimal Power Allocation for Fading Channels in Cognitive Radio Networks: Ergodic Capacity and Outage Capacity
Xin Kang, Ying-Chang Liang, Arumugam Nallanathan +2
A cognitive radio network (CRN) is formed by either allowing the secondary users (SUs) in a secondary communication network (SCN) to opportunistically operate in the frequency band…