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AuthorZhang, Lei
AuthorYang, Hong-Chuan
AuthorHasna, Mazen O.
Available date2016-04-18T08:10:05Z
Publication Date2014-02
Publication NameIEEE Transactions on Communications
ResourceScopus
CitationL. Zhang, H. C. Yang and M. O. Hasna, "Generalized Area Spectral Efficiency: An Effective Performance Metric for Green Wireless Communications," in IEEE Transactions on Communications, vol. 62, no. 2, pp. 747-757, February 2014.
ISSN0090-6778
URIhttp://dx.doi.org/10.1109/TCOMM.2013.122913.130138
URIhttp://hdl.handle.net/10576/4400
AbstractArea spectral efficiency (ASE) was introduced as a metric to quantify the spectral utilization efficiency of cellular systems. Unlike other performance metrics, ASE takes into account the spatial property of cellular systems. In this paper, we generalize the concept of ASE to study arbitrary wireless transmissions. Specifically, we introduce the notion of affected area to characterize the spatial property of arbitrary wireless transmissions. Based on the definition of affected area, we define the performance metric, generalized area spectral efficiency (GASE), to quantify the spatial spectral utilization efficiency as well as the greenness of wireless transmissions. After illustrating its evaluation for point-to-point transmission, we analyze the GASE performance of several different transmission scenarios, including dual-hop relay transmission, three-node cooperative relay transmission and underlay cognitive radio transmission. We derive closed-form expressions for the GASE metric of each transmission scenario under Rayleigh fading environment whenever possible. Through mathematical analysis and numerical examples, we show that the GASE metric provides a new perspective on the design and optimization of wireless transmissions, especially on the transmitting power selection. We also show that introducing relay nodes can greatly improve the spatial utilization efficiency of wireless systems. We illustrate that the GASE metric can help optimize the deployment of underlay cognitive radio systems.
Sponsorthe University of Victoria, a Discovery Grant from NSERC, and a grant from Qatar Telecom (Qtel).
Languageen
PublisherIEEE
SubjectArea spectral efficiency
performance analysis
relay communications and cognitive radio
TitleGeneralized area spectral efficiency: An effective performance metric for green wireless communications
TypeArticle
Pagination747-757
Issue Number2
Volume Number62
dc.accessType Abstract Only


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