CAJ | 학술논문

本文主要研究感知时隙对次用户节点功耗和频带利用率的影响，在保证检测性能的前提下，分析它们之间的折中关系，通过构造新的指标函数来衡量不同系统对次用户节点功耗和频带利用率的要求，并引入调节因子以便根据系统的不同需求选择不同的感知时隙。仿真结果表明，次用户节点功耗和频带利用率均是感知时隙的递减函数，在给定调节因子的情况下，总存在一个最优的感知时隙能够使得指标函数达到最小。
본문주요연구감지시극대차용호절점공모화빈대이용솔적영향，재보증검측성능적전제하，분석타문지간적절중관계，통과구조신적지표함수래형량불동계통대차용호절점공모화빈대이용솔적요구，병인입조절인자이편근거계통적불동수구선택불동적감지시극。방진결과표명，차용호절점공모화빈대이용솔균시감지시극적체감함수，재급정조절인자적정황하，총존재일개최우적감지시극능구사득지표함수체도최소。
This paper mainly focuses on the influence of sensing time on power consumption and bandwidth efficiency of secondary users.The trade-off among above three parameters is studied in this paper.A new index function is constructed to measure the requirement for secondary users’power consumption and bandwidth efficiency in different systems.And ad-justing factors are introduced to choose an appropriate sensing time for different systems.Simulation results show that sec-ondary users’power consumption and bandwidth efficiency are decreasing function of sensing time and there is an optimal sensing time to achieve the smallest index function for the given adjusting factor.