基于FPGA的LTE系统信道估计算法 研究与设计
Research on Channel Estimation Algorithm for LTE Uplink Based on FPGA

DOI: 10.12677/OJCS.2014.31003, PP. 12-18

Keywords: LTE；MMSE；信道估计；FPGA
LTE, MMSE, Channel Estimation, FPGA

Full-Text   Cite this paper   Add to My Lib

Abstract:

本论文从实现的角度对LTE系统信道估计算法进行了研究，对LS、MMSE等常用的信道估计算法进行了分析和MATLAB仿真；详细介绍了采用数字化后的MMSE算法实现的信道估计器电路结构，依照3GPP物理层标准，实现了基于FPGA的TD-LTE系统上行的信道估计算法电路。仿真结果表明，所提出的数字化MMSE算法模型系统在系统复杂度和信道估计效果上都较为优化。
From the point of view of implementation, channel estimation of LTE uplink is studied in the paper. Firstly, LS, MMSE and other commonly used channel estimation algorithm are analyzed and simulated by MATLAB. Secondly, channel estimator circuit structure adopting digital MMSE algorithm is described in detail. Then, in accordance with the 3GPP physical layer standards, based on FPGA, digital channel estimation algorithm of TD-LTE uplink system is implemented. The simulation results illustrate that the digital MMSE algorithm model system is optimal in both the complexity of the system and channel estimation effect.

References

[1]	3GPP. TS 36.201. V9.0.0. (2009) LTE physical layer—General description. 12.
[2]	罗润树 (2010) LTE下行系统中信道估计的研究及DSP实现. 电子科技大学, 成都.
[3]	郑侃 (2003) 宽带无线通信OFDM技术. 人民邮电出版社, 北京.
[4]	张继东, 等 (2003) 基于导频的OFDM信道估计及其研究进展. 通信学报, 11, 116-124.
[5]	王勇, 葛建华, 陆震, 等 (2004) OFDM系统信道估计算法及其FPGA实现. 电路与系统学报, 9, 139-142.
[6]	卞荔, 朱琦 (2008) 基于IEEE802.16d OFDM系统的FPGA设计. 南京邮电大学学报, 4, 75-81.

Full-Text