Performance Bounds Analysis for Semi-Blind Channel Estimation with Pilot Contamination in Massive MIMO-OFDM Systems

2018 ◽  
Author(s):  
Ouahbi Rekik ◽  
Abdelhamid Ladaycia ◽  
Karim Abed-Meraim ◽  
Anissa Mokraoui
Keyword(s):  
Channel Estimation ◽  
Massive Mimo ◽  
Blind Channel Estimation ◽  
Performance Bounds ◽  
Pilot Contamination ◽  
Ofdm Systems ◽  
Blind Channel ◽  
Mimo Ofdm

scholarly journals Distributed Channel Estimation and Pilot Contamination Analysis for Massive MIMO-OFDM Systems

2016 ◽  
Vol 64 (11) ◽  
pp. 4607-4621 ◽  
Author(s):  
Alam Zaib ◽  
Mudassir Masood ◽  
Anum Ali ◽  
Weiyu Xu ◽  
Tareq Y. Al-Naffouri
Keyword(s):  
Channel Estimation ◽  
Massive Mimo ◽  
Pilot Contamination ◽  
Ofdm Systems ◽  
Mimo Ofdm

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.

Optimised periodic precoder-based blind channel estimation for MIMO-OFDM systems

2017 ◽  
Vol 6 (3) ◽  
pp. 347-363
Author(s):  
Bhasker Gupta ◽  
Shivani Gupta ◽  
Ashutosh Kumar Singh ◽  
Hem Dutt Joshi
Keyword(s):  
Channel Estimation ◽  
Blind Channel Estimation ◽  
Ofdm Systems ◽  
Blind Channel ◽  
Mimo Ofdm
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