Browsing by Author "Zhang, L."
Now showing items 1-8 of 8
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Analysis of cell spectral efficiency of infrastructure relay-enhanced cellular system
Zhang L.; Yang H.-C.; Hasna , Mazen ( IEEE , 2011 , Conference Paper)In this paper, we investigate the downlink spectral efficiency of infrastructure relay-enhanced cellular systems. In particular, we use the average achieved spectral efficiency at an arbitrary mobile receiver in presence ... -
Area spectral efficiency of cooperative network with DF and AF relaying
Zhang L.; Yang H.-C.; Hasna , Mazen ( IEEE , 2012 , Conference Paper)Most performance metrics for cooperative networks focus on the qualification of either spectrum efficiency or link reliability, without considering the spatial effect of radio transmission. Area spectral efficiency (ASE) ... -
Area spectral efficiency of cooperative network with opportunistic relaying
Zhang L.; Hasna , Mazen; Yang H.-C. ( IEEE , 2012 , Conference Paper)In this paper, we investigate the area spectral efficiency (ASE) in a three-node cooperative network with opportunistic relaying. On one hand, in conventional cellular network, ASE is defined to be the average data rate ... -
Area spectral efficiency of underlay cognitive radio transmission over rayleigh fading channels
Zhang L.; Yang H.-C.; Hasna , Mazen ( IEEE , 2013 , Conference Paper)Cognitive radio is a promising technology to improve the spectrum utilization by allowing the unlicensed (secondary) user share a frequency bandwidth with the licensed (primary) owner under the condition that no harmful ... -
General strategy to synthesize uniform mesoporous TiO2/Graphene/Mesoporous TiO2 sandwich-like nanosheets for highly reversible lithium storage
Li, W.; Wang, F.; Liu, Y.; Wang, J.; Yang, J.; Zhang, L.; Elzatahry, A.A.; Al-Dahyan, D.; Xia, Y.; Zhao, D.... more authors ... less authors ( American Chemical Society , 2015 , Article)Uniform oxide deposition on graphene to form a sandwich-like configuration is a well-known challenge mainly due to their large lattice mismatches and poor affinities. Herein, we report a general strategy to synthesize ... -
Generalized area spectral efficiency of wireless ad-hoc networks over Rayleigh fading
Zhu J.; Zhang L.; Yang H.-C.; Hasna , Mazen ( Korean Institute of Communication Sciences , 2020 , Article)Generalized area spectral efficiency (GASE) was introduced as a metric to quantify the spectral utilization efficiency of wireless transmissions. Unlike other performance metrics, GASE takes into account the spatial property ... -
On ergodic capacity of wireless transmission subject to poisson distributed interferers over rayleigh fading channels
Zhang L.; Yang H.-C.; Hasna , Mazen ( IEEE , 2013 , Conference Paper)Poisson point process has been widely adopted in the analysis of co-channel interference in dense frequency reuse systems. With the decaying power law, the aggregate co-channel interference in Poisson field can be viewed ... -
Optimal dilation time for combined small endoscopic sphincterotomy and balloon dilation for common bile duct stones: a multicentre, single-blinded, randomised controlled trial
Meng W.; Leung J.W.; Zhang K.; Zhou W.; Wang Z.; Zhang L.; Sun H.; Xue P.; Liu W.; Wang Q.; Zhang J.; Wang X.; Wang M.; Shao Y.; Cai K.; Hou S.; Li Q.; Zhang L.; Zhu K.; Yue P.; Wang H.; Zhang M.; Sun X.; Yang Z.; Tao J.; Wen Z.; Wang Q.; Chen B.; Shao Q.; Zhao M.; Zhang R.; Jiang T.; Liu K.; Zhang L.; Chen K.; Zhu X.; Zhang H.; Miao L.; Wang Z.; Li J.; Yan X.; Wang F.; Zhang L.; Suzuki A.; Tanaka K.; Nur U.; Weiderpass E.; Li X.... more authors ... less authors ( Elsevier Ltd , 2019 , Article)Background Endoscopic sphincterotomy is the established treatment for common bile duct stones. Balloon dilation offers an alternative. Prolonged dilation (300 s) with a 10 mm diameter balloon decreases the occurrence of ...