To address the problems of the present Tera Hertz medium access control（MAC） protocols such as not updating the time slot requests numbers in time, unreasonable superframe structures and not merging time slot reques...To address the problems of the present Tera Hertz medium access control（MAC） protocols such as not updating the time slot requests numbers in time, unreasonable superframe structures and not merging time slot requests from the same pair of nodes, high throughput low delay medium access control（HLMAC）, a novel MAC protocol for Tera Hertz ultra-high data-rate wireless networks is proposed. It reduces the data access delay largely with a new superframe structure, from which nodes can get time slot allocation information immediately. The network throughput is also improved with the help of updating time slot requests number and merging time slot requests from the same pair of nodes. The theoretical analysis verifies the effectiveness of HLMAC, and the simulation results show that HLMAC improves the network throughput by 65.7% and decreases the access delay by 30%, as compared to energy and spectrum-aware medium access control（ES-MAC）.展开更多
STYLE=“word-wrap： break-word”〉The Standard Model（SM） prediction on the forward-backward asymmetry for bˉb production（A^bFB） is well consistent with the data of LEP at the Z-pole, but deviates from the data at...STYLE=“word-wrap： break-word”〉The Standard Model（SM） prediction on the forward-backward asymmetry for bˉb production（A^bFB） is well consistent with the data of LEP at the Z-pole, but deviates from the data at√s =89.55 and 92.95 Ge V which are slightly away from the pole. This deviation implies that there is still room for new physics. We calculate the A^bFB at the vicinity of the Z-pole in the little Higgs model as well as other measurable parameters such as R b and R c,by which we may constrain the parameter space of the little Higgs model. This can be further tested in the newly proposed tera-Z factory. With the fitted parameters we further make predictions on A^bFB and A t FB for tˉt production at the International Linear Collider（ILC）.展开更多
基金supported by the Project of Chongqing Municipal Education Commission(Kjzh11206)the Special Fund of Chongqing Key laboratory(CSTC)+2 种基金the National Natural Science Foundation of China(60972068)the Program for Changjiang Scholars and Innovative Research Team in University(IRT1299)and the Research Project of Fundamental and Frontier Science of Chongqing(cstc2015jcyjB X0085)
文摘To address the problems of the present Tera Hertz medium access control（MAC） protocols such as not updating the time slot requests numbers in time, unreasonable superframe structures and not merging time slot requests from the same pair of nodes, high throughput low delay medium access control（HLMAC）, a novel MAC protocol for Tera Hertz ultra-high data-rate wireless networks is proposed. It reduces the data access delay largely with a new superframe structure, from which nodes can get time slot allocation information immediately. The network throughput is also improved with the help of updating time slot requests number and merging time slot requests from the same pair of nodes. The theoretical analysis verifies the effectiveness of HLMAC, and the simulation results show that HLMAC improves the network throughput by 65.7% and decreases the access delay by 30%, as compared to energy and spectrum-aware medium access control（ES-MAC）.
基金Supported by National Natural Science Foundation of China(11275036,11047002,11375128)Fund of Natural Science Foundation of Hebei Province(A2011201118)Natural Science Fund of Hebei University(2011JQ05,2007113)
文摘STYLE=“word-wrap： break-word”〉The Standard Model（SM） prediction on the forward-backward asymmetry for bˉb production（A^bFB） is well consistent with the data of LEP at the Z-pole, but deviates from the data at√s =89.55 and 92.95 Ge V which are slightly away from the pole. This deviation implies that there is still room for new physics. We calculate the A^bFB at the vicinity of the Z-pole in the little Higgs model as well as other measurable parameters such as R b and R c,by which we may constrain the parameter space of the little Higgs model. This can be further tested in the newly proposed tera-Z factory. With the fitted parameters we further make predictions on A^bFB and A t FB for tˉt production at the International Linear Collider（ILC）.
