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TWC
2010
7 years 11 months ago
Performance of an Energy Detector over Channels with Both Multipath Fading and Shadowing
This paper analyzes the performance of an energy detector over wireless channels with composite multipath fading and shadowing effects. These effects are modeled by using the and ...
Saman Atapattu, Chintha Tellambura, Hai Jiang
TWC
2010
7 years 11 months ago
Clustering and cluster-based routing protocol for delay-tolerant mobile networks
This research investigates distributed clustering scheme and proposes a cluster-based routing protocol for DelayTolerant Mobile Networks (DTMNs). The basic idea is to distributivel...
Ha Dang, Hongyi Wu
TWC
2010
7 years 11 months ago
Analysis of area under the ROC curve of energy detection
A simple figure of merit to describe the performance of an energy detector is desirable. The area under the receiver operating characteristic (ROC) curve, denoted (AUC), is such a ...
Saman Atapattu, Chintha Tellambura, Hai Jiang
TWC
2010
7 years 11 months ago
On the Efficacy of Frequency Hopping in Coping with Jamming Attacks in 802.11 Networks
Abstract--Frequency hopping (FH) has been the most popularly considered approach for alleviating the effects of jamming attacks. We re-examine, the efficacy of FH based on both exp...
Konstantinos Pelechrinis, Christos Koufogiannakis,...
TWC
2010
7 years 11 months ago
Distributed power allocation in multi-user multi-channel cellular relay networks
In this paper, we consider the amplify-and-forward relaying transmission in the downlink of a multi-channel cellular network with one base station and multiple relay-destination pa...
Shaolei Ren, Mihaela van der Schaar
TWC
2010
7 years 11 months ago
Efficient Dynamic Spectrum Sharing in Cognitive Radio Networks: Centralized Dynamic Spectrum Leasing (C-DSL)
In this paper, we propose the concept of centralized dynamic spectrum leasing (C-DSL), in which multiple primary users belonging to the same primary system participate in the spect...
K. Hakim, Sudharman K. Jayaweera, Georges El-Howay...
TWC
2010
7 years 11 months ago
CFO estimation in OFDM systems under timing and channel length uncertainties with model averaging
In this letter, we investigate the problem of CFO estimation in OFDM systems when the timing offset and channel length are not exactly known. Instead of explicitly estimating the t...
Kun Cai, Xiao Li, Jian Du, Yik-Chung Wu, Feifei Ga...
TWC
2010
7 years 11 months ago
Multi-hop MIMO relay networks: diversity-multiplexing trade-off analysis
A multi-hop relay network with multiple antenna terminals in a quasi-static slow fading environment is considered. The fundamental diversity-multiplexing gain tradeoff (DMT) is an...
Deniz Gündüz, Mohammad Ali Khojastepour,...
TWC
2010
7 years 11 months ago
Two-way training: optimal power allocation for pilot and data transmission
Abstract--In this letter, we consider multiple-input singleoutput (MISO) systems with two-way training based transmission. We focus on the long-term system performance and study th...
Xiangyun Zhou, Tharaka A. Lamahewa, Parastoo Sadeg...
TWC
2010
7 years 11 months ago
A novel CAC scheme for homogeneous 802.11 networks
This paper proposes a new call admission control (CAC) scheme for one-hop homogeneous 802.11 DCF networks. Using the proposed scheme, we can perform admission control quickly and e...
Qinglin Zhao, Danny H. K. Tsang, Taka Sakurai
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