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[ "方昕(1975-),女,博士,杭州电子科技大学副教授、硕士生导师,主要研究方向为4G、5G移动通信系统物理层算法等。" ]
[ "刘云驹(1991-),男,杭州电子科技大学通信工程学院硕士生,主要研究方向为大规模MIMO系统。" ]
[ "曹海燕(1975-),女,博士,杭州电子科技大学副教授、硕士生导师,主要研究方向为宽带无线扩频通信理论、无线分集技术、OFDM多载波调制技术、信息论与编码技术以及MIMO与空时编码理论。" ]
[ "潘鹏(1983-),男,博士,杭州电子科技大学副教授、硕士生导师,主要研究方向为多用户检测技术、协作通信理论与技术和通信系统。" ]
网络出版日期:2016-05,
纸质出版日期:2016-05-20
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方昕, 刘云驹, 曹海燕, 等. 大规模MIMO系统中低复杂度的稀疏信道估计[J]. 电信科学, 2016,32(5):89-95.
Xin FANG, Yunju LIU, Haiyan CAO, et al. Low-complexity sparse channel estimation for massive MIMO systems[J]. Observation and communication, 2016, 32(5): 89-95.
方昕, 刘云驹, 曹海燕, 等. 大规模MIMO系统中低复杂度的稀疏信道估计[J]. 电信科学, 2016,32(5):89-95. DOI: 10.11959/j.issn.1000-0801.2016149.
Xin FANG, Yunju LIU, Haiyan CAO, et al. Low-complexity sparse channel estimation for massive MIMO systems[J]. Observation and communication, 2016, 32(5): 89-95. DOI: 10.11959/j.issn.1000-0801.2016149.
针对大规模多输入多输出(MIMO)系统信道估计算法复杂度高的缺陷,结合无线通信信道固有的稀疏性提出了一种低复杂度的稀疏信道估计算法。该算法是在传统的离散傅里叶变换(DFT)信道估计的基础上利用分离算法将信道抽头与噪声空间分离开来,使得信道估计时只需要计算信道抽头的部分,因此算法的计算复杂度被大大降低。仿真结果表明,该算法在保持低复杂度的同时,可获得接近最小均方误差(MMSE)性能。
Due to the high computational complexity of massive MIMO system
a low-complexity sparse channel estimation algorithm was proposed utilizing the inherent sparsity of the wireless communication channel to improve the estimation performance.The proposed algorithm separated channel tap from noise space based on the traditional discrete Fourier transform by adopting integral separation algorithm.This channel estimation algorithm need only calculate the channel tap
thus markedly reducing complexity of the algorithm.Numerical simulations show that proposed algorithm can approach to the performance of the minimum mean-square error estimator while maintaining lower complexity.
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