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Browsing by Author "Li, Frank Y."

Now showing items 1-7 of 7

A dynamic channel access strategy for underlay cognitive radio networks: Markov modelling and performance evaluation

Jalali, Elmira; Balapuwaduge, Indika A. M.; Li, Frank Y.; Pla, Vicent (2017)

[EN] Unlike in overlay cognitive radio networks, secondary users in underlay cognitive radio networks can access licensed spectrum even at the presence of a primary user, given that the interference caused by the secondary ...
Aggregated Packet Transmission in Duty-Cycled WSNs: Modeling and Performance Evaluation

Guntupalli, Lakshmikanth; Martínez Bauset, Jorge; Li, Frank Y.; Weitnauer, Mary Ann (Institute of Electrical and Electronics Engineers, 2017)

[EN] Duty cycling (DC) is a popular technique for energy conservation in wireless sensor networks (WSNs) that allows nodes to wake up and sleep periodically. Typically, a single-packet transmission (SPT) occurs per cycle, ...
Capacity Upper Bound of Channel Assembling in Cognitive Radio Networks with Quasistationary Primary User Activities

Jiao, Lei; Song, Enbin; Pla, Vicent; Li, Frank Y. (Institute of Electrical and Electronics Engineers (IEEE), 2013-05)

In cognitive radio networks (CRNs) with multiple channels, various channel-assembling (ChA) strategies may be applied to secondary users (SUs), resulting in different achieved capacity. However, there is no previous work ...
Channel Assembling with Priority-based Queues in Cognitive Radio Networks: Strategies and Performance Evaluation

Balapuwaduge, Indika A. M.; Jiao, Lei; Pla, Vicent; Li, Frank Y. (Institute of Electrical and Electronics Engineers (IEEE), 2014-02)

[EN] With the implementation of channel assembling (CA) techniques, higher data rate can be achieved for secondary users in multi-channel cognitive radio networks. Recent studies which are based on loss systems show that ...
Joint Optimization of Detection Threshold and Resource Allocation in Infrastructure-based Multi-band Cognitive Radio Networks

Shi, Cong; Wang, Ying; Wang, Tan; Zhang, Ping; Martínez Bauset, Jorge; Li, Frank Y. (SpringerOpen, 2012)

[EN] Consider an infrastructure-based multi-band cognitive radio network (CRN) where secondary users (SUs) opportunistically access a set of sub-carriers when sensed as idle. The carrier sensing threshold which affects the ...
On the Performance of Channel Assembling and Fragmentation in Cognitive Radio Networks

Jiao, Lei; Balapuwaduge, Indika A. M.; Li, Frank Y.; Pla, Vicent (Institute of Electrical and Electronics Engineers (IEEE), 2014)

[EN] Flexible channel allocation may be applied to multi-channel cognitive radio networks (CRNs) through either channel assembling (CA) or channel fragmentation (CF). While CA allows one secondary user (SU) occupy multiple ...
System Times and Channel Availability for Secondary Transmissions in CRNs: A Dependability Theory based Analysis

Balapuwaduge, Indika A. M.; Li, Frank Y.; Pla, Vicent (Institute of Electrical and Electronics Engineers, 2017)

[EN] Reliability is of fundamental importance for the performance of secondary networks in cognitive radio networks (CRNs). To date, most studies have focused on predicting reliability parameters based on prior statistics ...