A performance analysis of optimized semi-blind channel estimation method in OFDM systems

2017 ◽  
Author(s):  
Sangirov Gulomjon ◽  
Fu Yongqing ◽  
Jamshid Sangirov ◽  
Fang Ye ◽  
Ahmad Olmasov
Keyword(s):  
Performance Analysis ◽  
Channel Estimation ◽  
Estimation Method ◽  
Blind Channel Estimation ◽  
Ofdm Systems ◽  
Blind Channel ◽  
A Performance

scholarly journals Adaptive Blind Channel Estimation for MIMO-OFDM Systems Based on PARAFAC

2020 ◽  
Vol 2020 ◽  
pp. 1-17
Author(s):  
Ruo-Nan Yang ◽  
Wei-Tao Zhang ◽  
Shun-Tian Lou
Keyword(s):  
Channel Estimation ◽  
Cost Function ◽  
Orthogonal Frequency Division Multiplexing ◽  
Weighted Least Squares ◽  
Estimation Method ◽  
Blind Channel Estimation ◽  
Ofdm Systems ◽  
Blind Channel ◽  
Mimo Ofdm ◽  
The Cost

In order to track the changing channel in multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) systems, it is prior to estimate channel impulse response adaptively. In this paper, we proposed an adaptive blind channel estimation method based on parallel factor analysis (PARAFAC). We used an exponential window to weight the past observations; thus, the cost function can be constructed via a weighted least squares criterion. The minimization of the cost function is equivalent to the decomposition of third-order tensor which consists of the weighted OFDM data symbols. To reduce the computational load, we adopt a recursive singular value decomposition method for tensor decomposition; then, the channel parameters can be estimated adaptively. Simulation results validate the effectiveness of the proposed algorithm under diverse signalling conditions.

CRB-based performance analysis of semi-blind channel estimation for massive MIMO-OFDM systems with pilot contamination

2019 ◽  
Vol 13 (20) ◽  
pp. 3479-3488 ◽  
Author(s):  
Ouahbi Rekik ◽  
Abdelhamid Ladaycia ◽  
Anissa Mokraoui ◽  
Karim Abed-Meraim
Keyword(s):  
Performance Analysis ◽  
Channel Estimation ◽  
Massive Mimo ◽  
Blind Channel Estimation ◽  
Pilot Contamination ◽  
Ofdm Systems ◽  
Blind Channel ◽  
Mimo Ofdm

Blind Channel Estimation for SIMO-OFDM Systems without Cyclic Prefix

2010 ◽  
Vol E93-A (1) ◽  
pp. 339-343 ◽  
Author(s):  
Shih-Hao FANG ◽  
Ju-Ya CHEN ◽  
Ming-Der SHIEH ◽  
Jing-Shiun LIN
Keyword(s):  
Channel Estimation ◽  
Cyclic Prefix ◽  
Blind Channel Estimation ◽  
Ofdm Systems ◽  
Blind Channel
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