通信学报Issue(4)：103-111,9.DOI:10.3969/j.issn.1000-436x.2014.04.012
认知无线电网络中基于主系统有限反馈的频谱共享方案
Spectrum sharing scheme in cognitive radio networks based on primary limited feedback
摘要
Abstract
A spectrum sharing scheme for a pair of secondary users co-existing with multiple primary users was proposed. The primary users exploit the limited feedback of channel quality information (CQI) to allocate their transmission power and rate. By overhearing the limited feedback of primary CQI, the secondary user accessed the channel with proper transmission power and rate while causing interference to the primary users and so the rate loss of the primary system. Under the primary rate loss constraint, the optimal transmit power and transmission rate for the secondary was obtained to maximize the secondary user throughput. Numerical results show that, with only 3 or 4 bits of feedback to each prima-ry user, the effective throughput of the secondary system is comparable to the case with both primary and secondary transmitters having the perfect CQI of the primary link. The simulation results demonstrate that the proposed spectrum sharing scheme can meet the primary rate loss constraint.关键词
认知无线电/有限反馈/速率损失约束/频谱共享Key words
cognitive radio/limited feedback/rate loss constraint/spectrum sharing分类
信息技术与安全科学引用本文复制引用
高欢芹,宋荣方..认知无线电网络中基于主系统有限反馈的频谱共享方案[J].通信学报,2014,(4):103-111,9.基金项目
国家自然科学基金资助项目(60972041，61271234)；教育部博士点基金资助项目(20123223110002)；东南大学移动通信国家重点实验室开放课题基金资助项目；江苏省研究生创新计划基金资助项目(CX09B-146Z)；江苏高校优势学科建设工程资助项目--“信息与通信工程”基金资助项目@@@@Foundation Items:The National Natural Science Foundation of China (60972041,61271234) （60972041，61271234）
Ph.D. Program Foundation of Minis-try of Education (20123223110002) （20123223110002）
Open Research Foundation of National Mobile Communication Research Laboratory, Southeast University （）
Graduate Innovation Program of Jiangsu Province (CX09B-146Z) （CX09B-146Z）
Priority Academic Program Development of Jiangsu Higher Education Institutions-Information and Communication Engineering （）
