| 基于DSP的LTE TDD上行解传输预编码实现 |
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| 引用本文： | 李小文,彭德义,王丹. 基于DSP的LTE TDD上行解传输预编码实现[J]. 重庆邮电大学学报(自然科学版), 2012, 24(2): 159-163 |
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| 作者姓名： | 李小文 彭德义 王丹 |
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| 作者单位： | 重庆邮电大学重庆市移动通信技术重点实验室,重庆,400065 |
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| 基金项目： | 国家科技重大专项（2009ZX3002-009）；国家科技重大专项（2011ZX03001-003-01） |
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| 摘 要： | 在时分长期演进(time division-long term evolution,TD-LTE)系统中,为了保证上行传输单载波特性,采用集中式DFT-扩展-OFDM(discrete Fourier transform-spread OFDM)机制.对各种离散傅里叶逆变换(inverse discreteFourie...
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| 关 键 词： | 长期演进 传输预编码 离散傅里叶逆变换(IDFT) DSP实现 |
| 收稿时间： | 2011-11-13 |
Implementation of LTE TDD uplink transformation deprecoding based on DSP |
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| LI Xiao-wen,PENG De-yi,WANG Dan. Implementation of LTE TDD uplink transformation deprecoding based on DSP[J]. Journal of Chongqing University of Posts and Telecommunications, 2012, 24(2): 159-163 |
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| Authors: | LI Xiao-wen PENG De-yi WANG Dan |
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| Abstract: | In the TD-LTE (time division-long term evolution) system, Located DFT-Spread OFDM has been adopted in Uplink Transmission. According to the limitation of the length of IDFT sequence by 3GPP protocol, compared with a variety of performance of DFT/IDFT algorithms by simulating,this paper adopts a method of combining FFT algorithm based on 2-N point with symbol selecting of linear interpolation by evaluation of hardware performance and implementing complexity, and proposes an implementing scheme. Firstly, conjugate every troops of the sequence after equalization, then Fast Fourier transform it by adopting algorithm based on 2-N point and selecting the symbol by linear interpolating. Implementing flow chart and the efficiency of algorithm executing are presented, and feasibility and effectiveness of the proposed scheme is verified through the analysis of implementing complexity. |
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| Keywords: | long term evolution(LTE) transmission precoding inverse discrete Fourier transform(IDFT) DSP realization |
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