CAJ | 학술논문

针对多信道认知用户能量效率问题，提出认知用户能量效率优化模型，进而优化传输功率和感知帧长。首先，多信道认知用户基于多带宽联合能量检测方案，在一定传输功率和干扰功率限制下，建立了以单位数据能耗为目标的最优化问题；其次，通过非线性分式规划的对偶优化将目标函数转换为内点法求解形式；然后，结合内点法和二分法给出算法流程，进而配置最优功率和感知时间。仿真结果表明，对应不同通信环境采用该优化方法都能通过配置最优功率和感知时间达到能量效率最优。
침대다신도인지용호능량효솔문제，제출인지용호능량효솔우화모형，진이우화전수공솔화감지정장。수선，다신도인지용호기우다대관연합능량검측방안，재일정전수공솔화간우공솔한제하，건립료이단위수거능모위목표적최우화문제；기차，통과비선성분식규화적대우우화장목표함수전환위내점법구해형식；연후，결합내점법화이분법급출산법류정，진이배치최우공솔화감지시간。방진결과표명，대응불동통신배경채용해우화방법도능통과배치최우공솔화감지시간체도능량효솔최우。
For the energy efficiency problem of cognitive user with multi-channel,the energy efficiency op-timization model is proposed and transmission power and perception time are optimized. Firstly,based on the multi-bandwidth joint energy detection scheme,the multi-channel cognitive user establishes the opti-mization problem for the target of energy consumption per unit data under certain transmission power and interference power limits. Secondly,the objective function is converted to the form which can be solved by the interior-point method through the dual optimization of the non-linear fractional programming. Thirdly, the algorithm is given by the combination of the interior-point method and the binary search method,and then the optimal power and perception time can be configured. Simulation results show that the proposed optimization method is able to achieve energy efficiency through the optimal configurations of transmission power and perception time corresponding to different communication environment.