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Dynamic resource allocation in relay-aided celluar OFDMA systems

机译:中继辅助蜂窝OFDMA系统中的动态资源分配

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In this paper, we consider the problem of joint bandwidth and power allocation for the relay aided orthogonal frequency division multiple access (OFDMA) system. A fractional frequency reuse (FFR) technique for interference mitigation in relay OFDMA cellular wireless networks is proposed based on a statistical knowledge of the user channels. The resource allocation problem is formulated as a power minimization problem, subject to meeting the target rates of all users in the network. We develop a distributed algorithm to find the globally optimal cell bandwidth allocation, user sub-carrier numbers and power allocation dynamically based on traffic demands and channel conditions. Our numerical results show that the presented solution has better performance compared to the fixed bandwidth allocation methods.
机译:在本文中,我们考虑了中继辅助正交频分多址(OFDMA)系统的联合带宽和功率分配问题。基于用户信道的统计知识,提出了一种用于减轻中继OFDMA蜂窝无线网络干扰的分数频率复用(FFR)技术。将资源分配问题表述为功耗最小化问题,要满足网络中所有用户的目标速率。我们开发了一种分布式算法,以根据流量需求和信道条件动态地找到全局最佳的小区带宽分配,用户子载波号和功率分配。我们的数值结果表明,与固定带宽分配方法相比,该解决方案具有更好的性能。

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