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	Optimizing the energy efficiency of OFDM with index modulation
	Wen, Miaowen ; Cheng, Xiang ; Yang, Liuqing
	2014
英文摘要	Spatial modulation (SM) is a promising single frequency-radio (RF) large-scale multiple-input multiple-output (MIMO) technique which can strike an attractive tradeoff between spectral efficiency (SE) and energy efficiency (EE) of a wireless network. Recently, a novel technique termed as orthogonal frequency division multiplexing with index modulation (OFDM-IM) emerges, where the SM principle is applied to OFDM subcarriers. It is revealed that OFDM-IM has the potential to outperform classical OFDM in terms of uncoded bit error rate (BER). In this paper, the EE of OFDM-IM with finite-alphabet input is analyzed from an information-theoretic perspective. Based on the analytical expression, the optimal strategy in maximizing the EE of OFDM-IM is proposed, which involves the optimal subcarrier grouping approach as well as the optimal selection of the number of active subcarriers. Monte-Carlo simulations validate the analysis. ? 2014 IEEE.; EI; 0
语种	英语
DOI标识	10.1109/ICCS.2014.7024760
内容类型	其他
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/412561]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Wen, Miaowen,Cheng, Xiang,Yang, Liuqing. Optimizing the energy efficiency of OFDM with index modulation. 2014-01-01.

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