| 一种在LTE-Advanced载波聚合下降低CM的方法 |
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| 引用本文： | 王文涛,史治平,曾庆展,胡紫嘉,梁春丽.一种在LTE-Advanced载波聚合下降低CM的方法[J].电子技术应用,2012,38(3):120-123. |
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| 作者姓名： | 王文涛 史治平 曾庆展 胡紫嘉 梁春丽 |
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| 作者单位： | 1. 电子科技大学通信抗干扰技术国家级重点实验室,四川成都,611731
2. 中兴通信技术有限公司,广东深圳,518083 |
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| 摘 要： | 3GPP LTE采用OFDMA作为物理层多址接入技术。而峰值引起的功率回退是OFDM技术的主要问题,因此在LTE中,采用CM(立方度量)来度量功率回退。LTE-Advanced中为了提升峰值速率引入了载波聚合技术,多个成员载波的引入可能会带来CM的提升。主要介绍一种载波聚合下降低由于重复导频引起的CM过高的方法。该方法不仅能够在多个成员载波情况下有效地降低CM,并且可以将复杂度和处理时延控制在较小范围内。
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| 关 键 词： | LTE-Advanced 载波聚合 立方度量 |
A method to reduce CM for carrier aggregation in LTE-Advanced |
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| Wang Wentao
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Shi Zhiping
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Zeng Qingzhan
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Hu Zijia
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Liang Chunli.A method to reduce CM for carrier aggregation in LTE-Advanced[J].Application of Electronic Technique,2012,38(3):120-123. |
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| Authors: | Wang Wentao Shi Zhiping Zeng Qingzhan Hu Zijia Liang Chunli |
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| Affiliation: | 1.China National Key Laboratory of Science and Technology on Communications,University of Electronic Science and Technology,Chengdu 611731,China; 2.ZTE Corporation,Shenzhen 518083,China) |
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| Abstract: | 3GPP LTE uses OFDMA as the physical layer multiple access technology,the power fallback caused by peak power is the main problem in OFDM technology.In LTE,CM(cubic metric) is used to measure the probelm.LTE-Advanced used carrier aggregation to improve the peak throughout,which may rise CM by multiple component carrier.This paper introduced a method to reduce CM for carrier aggregation caused by reused reference signal.This method can reduce the CM effectively in the case many component carriers are aggregated,and to control the complexity and processing delay in the smaller range. |
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| Keywords: | LTE-Advanced carrier aggregation cubic metric |
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