Multi-mode power loading is an attractive power loading technique since it avoids iterative procedures and periodic updates of a threshold value in order to find the best power loading configuration. Simultaneously, multi-mode power loading achieves comparable spectral efficiency to optimal waterfilling with full channel state information (CSI) using only N feedback bits, where N is the number of subcarriers. The requirement of 2{sup}N - 1 brute-force searches, however, makes multi-mode power loading infeasible for large N. This paper proposes a new power loading technique to circumvent this limit of multi-mode power loading. Our analysis and numerical results show the proposed technique achieves the same spectral efficiency as multi-mode power loading only using N searches, thus working well even for large N.
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机译：多模式电源负载是一种吸引力的电源加载技术，因为它避免了迭代过程和阈值的定期更新，以便找到最佳电源加载配置。同时，多模式电源负载实现了与仅使用N个反馈位的全频道状态信息（CSI）的最佳频谱效率，其中N是子载波的数量。然而，需要2 {SUP} N - 1强力搜索的要求使得多模电荷不可行用于大型N.本文提出了一种新的电力加载技术，以规避多模式电源负载限制。我们的分析和数值结果表明，所提出的技术仅达到与多模电源加载相同的光谱效率，仅使用N个搜索，从而使得即使是大的N.
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