| 基于LTE的单载波频分多址调制技术研究 |
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| 引用本文： | 赵琦,王海涛,邹光南.基于LTE的单载波频分多址调制技术研究[J].电子设计工程,2011,19(4):47-49,54. |
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| 作者姓名： | 赵琦 王海涛 邹光南 |
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| 作者单位： | 中国空间技术研究院卫星应用系统部,北京,100086 |
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| 摘 要： | 针对移动通信中,对于手持终端能耗的要求较高的特点,单载波频分多址作为一种单载波调制方式,以其与生俱来的优点,被3GPP LTE标准采用为上行调制方式。该文对单载波频分多址进行了简要的介绍,对3GPP相关标准进行解析,简要说明了在LTE上行信道中的编码调制方式和帧结构,并结合标准进行仿真,给出仿真信号频谱,在峰均比性能上与OFDM进行了对比,说明了单载波频分多址在峰均比方面与OFDM比较,可以将峰均比提高2个单位以上,满足移动通信中低功率的要求。
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| 关 键 词： | LTE 单载波频分多址 峰均比 3GPP标准 帧结构 |
Study on single carrier FDMA modulation based on LTE |
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| ZHAO Qi,WANG Hai-tao,ZOU Guang-nan.Study on single carrier FDMA modulation based on LTE[J].Electronic Design Engineering,2011,19(4):47-49,54. |
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| Authors: | ZHAO Qi WANG Hai-tao ZOU Guang-nan |
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| Affiliation: | (Satellite Application System Department,China Academy of Space Technology,Beijing 100086,China) |
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| Abstract: | Aiming at mobile communication system,the handsets require a lower power wastage.As a way of single carrier modulation,single carrier FDMA is born to be preponderant;therefore,it is adopted by 3GPP LTE as the uplink modulation mode.In this paper,SC-FDMA is introduced briefly,and analyzed based on 3GPP standard in aspects of coding and modulation way,as well as the frame structure.Then the simulation of the signal frequency is shown below.The comparison and analyze on SC-FDMA and OFDM demonstrate that SC-FDMA is superior to OFDM more than 2 units from the aspect of PAPR which meets the requirement of mobile communication exactly. |
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| Keywords: | LTE single carrier FDMA PAPR 3GPP frame structure |
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