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基于期望最大化(EM)的最大后验信道估计算法(MAP)在高信噪比(SNR)下将很难获得较低的估计误差,并且,对于导频辅助的MIMO-OFDM系统,OFDM符号的数据传输效率随着发送天线的增加而明显下降.为改善这两种缺陷,引入一种等效的信号模型来改善高SNR下的估计性能 在相邻多个OFDM符号内使用相移正交导频序列和联合估计来提高系统的数据传输效率和估计性能 根据角域内信道间的独立性来减小噪声对估计的影响.通过仿真实验可知,所提算法具有更小的估计误差和更高的数据传输效率.-Maximum a po
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Author: Vinay Uday Prabhu
E-mail: vinay_u_prabhu@yahoo.co.uk
Function: Comparison of the performances of the LS and the MMSE channel estimators
for a 64 sub carrier OFDM system based on the parameter of Mean square error
Assumptions: The
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ofdm系统的信道估计,有LS、MMSE、LMSE三种算法的比较-ofdm systems, channel estimation, a LS, MMSE, LMSE Comparison of three algorithms
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此函数利用LS算法对OFDM系统进行频域信道估计-This function use LS algorithm to OFDM systems in frequency domain channel estimation
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CHANNEL ESTIMATION TECHNIQUES FOR
OFDM SYSTEMS IN DISPERSIVE
TIME-VARYING CHANNELS
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时域信道估计在中继系统中的应用,能够有较低的复杂度和较好的性能-Time Domain Channel Estimation for Amplify-and-
Forward Relay in OFDM Systems
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Designing spectral e±cient, high-speed wireless links that o® er high quality-
of-service and range capability has been a critical research and engineering chal-
lenge. In this thesis, we mainly address the complexity and performance issues o
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针对MIMO-OFDM系统中期望最大化(EM)信道估计算法在高信噪比(SNR)下带来的误差地板(EF)现象,且OFDM符号的数据传输效率随发射天线数的增加而明显降低,提出一种改进的高效EM信道估计算法。该算法首先引入一种准确的等效信号模型并推导出一种修正的EM算法,改善了EM算法在高SNR下的性能 在多个OFDM间利用相位正交导频序列来提高数据传输效率,同时进行联合信道估计以提高估计性能。仿真实验验证了所提算法具有更高的信道估计性能和更高的数据传输效率。-For multiple-input m
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信道估计方面的参考,初学者会有很大帮助,基于OFDM系统,有最基本的算法仿真和对比-Channel estimation in terms of reference for beginners will be of great help to the OFDM-based systems, simulation and comparison of the basic algorithm
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Abstract—In this paper, we study the joint estimation of inphase
and quadrature-phase (I/Q) imbalance, carrier frequency
offset (CFO), and channel response for multiple-input multipleoutput
(MIMO) orthogonal frequency division multiplexing
(O
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Abstract—In this paper, we study the joint estimation of inphase
and quadrature-phase (I/Q) imbalance, carrier frequency
offset (CFO), and channel response for multiple-input multipleoutput
(MIMO) orthogonal frequency division multiplexing
(O
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卡尔曼滤波器进行信道估计的一篇文章,适用于OFDM-MIMO系统。-Kalman filter for channel estimation in an article for OFDM-MIMO systems.
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Channel estimation techniques for OFDM systems based on a pilot arrangement are investigated. Channel estimation based on a comb type pilot arrangement is studied through different algorithms for both estimating the channel at pilot frequencies and i
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改论文详细描述了信道估计算法,提出了一种新的信道估计算法,即压缩感知算法,得到了良好的效果!(The paper describes the channel estimation algorithm in detail, and proposes a new channel estimation algorithm, that is, the compressive sensing algorithm, which has achieved good results!)
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