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arXiv 1803.07342eess.SP
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空间多载波调度的演进:面向多小区场景

Evolution of Spatial and Multicarrier Scheduling: Towards Multi-cell Scenario

Pol Henarejos, Ana Perez-Neira, Velio Tralli, Marco Moretti, Nikos Dimitriou, Giulio Dainelli

摘要:

OFDMA系统被认为是下一代多蜂窝无线系统中最有前途的多址接入方案。为了确保无线电资源的最佳使用,OFDMA无线电资源管理算法必须最大化分配给用户的不同子信道的功率和速率,同时还考虑相邻小区之间产生的影响接收服务质量的同信道干扰。本文讨论了在多个同信道小区中的功率分配方案的各种方案。这些方案包括集中式和分布式解决方案,其可能涉及各种程度的复杂性和相关开销,并且可能采用诸如线性编程的过程。最后,本文介绍了一种新的解决方案,使用网络流模型来解决多小区系统和速率的最大化。建议在每个小区处应用空间波束成形,以便更好地应对干扰。

英文摘要:

OFDMA systems are considered as the promising multiple access scheme of next generation multi-cellular wireless systems. In order to ensure the optimum usage of radio resources, OFDMA radio resource management algorithms have to maximize the allocated power and rate of the different subchannels to the users taking also into account the generated co-channel interference between neighboring cells, which affects the received Quality of Service. This paper discusses various schemes for power distribution schemes in multiple co-channel cells. These schemes include centralized and distributed solutions, which may involve various degrees of complexity and related overhead and may employ procedures such as linear programming. Finally, the paper introduces a new solution that uses a network flow model to solve the maximization of the multi-cell system sum rate. The application of spatial beamforming at each cell is suggested in order to better cope with interference.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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