Hybrid Resource Allocation Scheme with Proportional Fairness in OFDMA-Based Cognitive Radio Systems

作者：Li, Li^*; Xu, Changqing; Fan, Pingzhi; He, Jian

来源：IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, 2012, E95A(8): 1430-1434.

DOI：10.1587/transfun.E95.A.1430

• hybrid Cognitive Radio systems
• OFDMA
• resource allocation
• proportional rates
• dual methods

In this paper, the resource allocation problem for proportional fairness in hybrid Cognitive Radio (CR) systems is studied. In OFDMA-based CR systems, traditional resource allocation algorithms can not guarantee proportional rates among CR users (CRU) in each OFDM symbol because the number of available subchannels might be smaller than that of CRUs in some OFDM symbols. To deal with this time-varying nature of available spectrum resource, a hybrid CR scheme in which CRUs are allowed to use subchannels in both spectrum holes and primary users (PU) bands is adopted and a resource allocation algorithm is proposed to guarantee proportional rates among CRUs with no undue interference to PUs.

• 出版日期2012-8
• 单位西南交通大学; 上海交通大学