An energy aware resource allocation for cognitive radio OFDMA systems

作者：Chen Xiaomao^*; Ouyang Shan; Chen Ziqiang

来源：International Journal of Communication Networks and Distributed Systems, 2014, 13(3-4): 335-343.

DOI：10.1504/IJCNDS.2014.064634

• Lagrange methods
• Network adaptive
• OFDMA
• Orthogonal frequency division multiple access
• Quality of service (QoS) guarantees
• Spectrum efficiency
• Total transmit power
• Transmit power

Multi-user orthogonal frequency division multiple access (OFDMA) network adaptive resource allocation is proposed. Subcarriers are assigned to each user in a way that ensures better spectrum efficiency;everyone is allocated power with quality of service (QoS) guarantees, while users'minimum rate requirements are met. Optimum transmit power of user is obtained by Lagrange method, validity of the time-share and corresponding hard mapping method are verified by simulation, the proposed algorithm can adapt allocate resource, minimising total transmit power.

• 出版日期2014
• 单位西安电子科技大学