Achieving fairness by aggregate power allocation in opportunistic cooperation networks

Within a wireless opportunistic network,one of the lucky users gets an opportunity to utilize the whole radio resource.However some of the unlucky users keep silent during an unexpected period result- ing from severe wireless environment and imperfect scheduling algorithms .An opportunistic cooperation protocol is proposed that can achieve equivalent performance measured in terms of outage probability,in which scheme the opportunistic user helps to relay what need retransmitting indicated by the destination...     

65Nm苎麻纱牵切纺工艺的研究

主要分析了传统苎麻纺纱工艺中针刺梳理的缺点,提出采用牵切式平行梳理代替原工艺中的针齿梳理工艺,试纺中对纺制65Nm纯苎麻纱的工艺进行探讨、改进和优化设计,解决了工艺难点,得出合理的工艺路线和工艺参数.