{"title":"Primary user capacity maximization in cooperative detection network using m out of N fusion rule","authors":"Vesh Raj S. Banjade, Nandana Rajatheva","doi":"10.1109/ISWCS.2011.6125406","DOIUrl":null,"url":null,"abstract":"Cooperative detection is a well accepted notion for alleviating the “hidden terminal problem” in cognitive radio (CR) networks. Furthermore, a number of CRs cooperating with each other significantly boosts the reliability of identification of any spectral opportunity. We consider a situation in which the primary user (PU) of the spectrum tries to communicate at a maximum possible rate with the primary receiver which could be a base station (BS) in presence of an N number of energy detector based CRs. Deploying the m out of N fusion rule at the BS, we formulate the problem of allocating the total PU power across its different transmission slots in a bid to maximize the PUBS capacity such that the fused probability of detection is lower bounded by a specific level guaranteeing a prescribed reliability of detection. The problem is shown to possess convexity and is solved to allocate the available PU transmission power optimally. Analysis of m out of N fusion rule on the PU capacity and on the fused detection probability is presented. The effect of time-bandwidth product of the energy detector on the system metrics is also analyzed.","PeriodicalId":414065,"journal":{"name":"2011 8th International Symposium on Wireless Communication Systems","volume":"67 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"4","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2011 8th International Symposium on Wireless Communication Systems","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ISWCS.2011.6125406","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 4
Abstract
Cooperative detection is a well accepted notion for alleviating the “hidden terminal problem” in cognitive radio (CR) networks. Furthermore, a number of CRs cooperating with each other significantly boosts the reliability of identification of any spectral opportunity. We consider a situation in which the primary user (PU) of the spectrum tries to communicate at a maximum possible rate with the primary receiver which could be a base station (BS) in presence of an N number of energy detector based CRs. Deploying the m out of N fusion rule at the BS, we formulate the problem of allocating the total PU power across its different transmission slots in a bid to maximize the PUBS capacity such that the fused probability of detection is lower bounded by a specific level guaranteeing a prescribed reliability of detection. The problem is shown to possess convexity and is solved to allocate the available PU transmission power optimally. Analysis of m out of N fusion rule on the PU capacity and on the fused detection probability is presented. The effect of time-bandwidth product of the energy detector on the system metrics is also analyzed.
协作检测是缓解认知无线电(CR)网络中“终端隐藏问题”的一种公认的方法。此外,许多CRs相互合作显著提高了识别任何光谱机会的可靠性。我们考虑了这样一种情况,即频谱的主用户(PU)试图以最大可能的速率与主接收器(可能是基站(BS))进行通信,而主接收器存在N个基于能量探测器的cr。在BS上部署m out of N融合规则,我们制定了在其不同传输槽中分配总PU功率的问题,以最大限度地提高pub容量,从而使检测的融合概率低于保证规定检测可靠性的特定水平。证明了该问题具有凸性,并对其进行了求解,使可用PU传输功率得到最优分配。分析了m out of N熔接规律对PU容量和熔接检测概率的影响。分析了能量检测器的时带宽积对系统指标的影响。