Green joint user scheduling and power control in downlink multi-cell OFDMA networks
Green joint user scheduling and power control in downlink multi-cell OFDMA networks
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发表时间：
2013-07
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通讯作者：
L. Venturino;Chiara Risi;Alessio Zappone;S. Buzzi
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作者：
L. Venturino;Chiara Risi;Alessio Zappone;S. Buzzi
研究了基于ofdma的多小区蜂窝系统在基站协调下下行链路的节能资源分配问题。利用分式规划和交替最大化的工具，实现了子载波上的用户调度和传输功率分配，以最大化系统范围内的节能性能函数。为了与相关文献的最新趋势保持一致，能源效率的定义也考虑了为了实现传输而消耗的电路功率。该算法只需要求解凹问题，并保证收敛性。此外，数值结果表明，它们具有令人满意的性能。
Energy-efficient resource allocation in the downlink of a multi-cell OFDMA-based cellular system with base station coordination is considered in this paper. Using the tools of fractional programming and alternating maximization, user scheduling on subcarriers and transmit power allocation is carried out in order to maximize a system-wide energy-efficient performance function. In keeping with a recent trend in related literature, the definition of the energy efficiency also considers the circuit power that is dissipated in order to enable transmission. The proposed algorithms only require the solution of concave problems and are guaranteed to converge. Moreover, numerical results indicate that they exhibit satisfactory performance.