Channel estimation
Variational channel estimation with tempering: an artificial intelligence algorithm for wireless intelligent networks
... in channel state inference in WSNs, such as high complexity, poor generalization, impracticability and so on, we develop a new channel estimation method with variational tempering for MIMO-OFDM ...
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Effect of residual channel estimation errors in random access methods for satellite communications
... residual channel estimation errors on recent TDMA based RA ...the channel parameters in the case of multiple superimposed signals and to achieve performance close to the perfect knowledge ...estimate ...
7
Blind Channel Estimation for STBC Systems Using Higher-Order Statistics
... transmitter employs Alamouti Coding. Regarding the proposed methods, Table I shows that the set of ambiguity matrices after channel estimation is Θ = {M 1 (𝜃), M 2 (𝜃)}. Figure 5 displays the NMSE versus ...
12
A Fast Adaptive Method for Subspace Based Blind Channel Estimation
... blind channel estimation method is proposed using the subspace information from the correlation ...the channel estimation are computed ...
5
Nonlinear MIMO communication systems : channel estimation and information recovery using Volterra models
... for channel estima- tion and information recovery in multiple-input-multiple-output (MIMO) Volterra communication ...antennas. Channel estimation and equalization techniques are developed for three ...
241
Low-Complexity Approximations for LMMSE Channel Estimation in OFDM/OQAM
... Avenue de la Boulaie, 35576 Cesson - S´evign´e Cedex, France. Emails: yves.louet@centralesupelec.fr, and faouzi.bader@supelec.fr Abstract—In this paper, the authors describe and compare two low-complexity approximations ...
6
Improved channel estimation for interference cancellation in random access methods for satellite communications
... Fig. 1: Packets transmission with collision on slot 1 II. S YSTEM M ODEL In order to illustrate the main issues raised by imperfect channel estimation in interference cancellation based RA meth- ods, we ...
7
Channel estimation strategy for LPWA transmission at low SNR: application to Turbo-FSK
... linear N ⊥ -carrier FSK modulation [6]. Efficient digital imple- mentation can be realized by inverse Fast Fourier Transform (FFT) followed by a cyclic prefix insertion as for Orthogonal Frequency Division Multiplexing ...
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Performance Analysis of Extended RASK under Imperfect Channel Estimation and Antenna Correlation
... and 4, σ H = 0 and 0.2. inaccuracies, and fixing the correlation factor to ρ = 0.1. First comparing the curves with N t = 8, it is verified that the larger the RA array, the stronger the degradation of the performance. ...
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Channel estimation with a priori position for aeronautical communications via a satellite link
... the estimation of the aeronautical multipath ...multipath channel, we propose simple but efficient channel estimation methods that benefit from a known position of the mobile ...the ...
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Turbo-FSK, a physical layer for LPWA: Synchronization and Channel estimation
... In terms of PER, performance is even closer when LS filtered and LMMSE are compared (Fig. 8). For these simulation scenarios, the pilot sequence is repeated 64 times and averaged to improve the performance of the ...
6
EM Channel Estimation in a Low-cost UWB Receiver based on Energy Detection
... different channel models using BICM(23,35) at rate 1/2 with K = 3 in non perfect ...the channel parameters of an M-PPM UWB ...The channel estimation is used iteratively and jointly with a ...
6
Robust Relay Beamforming for MIMO Multi-Relay Networks with Imperfect Channel Estimation
... and α RZF . The advantage of the proposed robust MMSE-RZF can be observed in Fig. 2. Note that MF, MF-RZF and ZF are all special cases of MMSE-RZF, which are not optimized with the system condition. The poor performance ...
7
Efficient Threshold based non-sample spaced sparse channel estimation in OFDM system
... sparse channel estimation and sample spaced sparse channel estimation with CS, the channel statistics (power delay profile of the channel, channel sparsity et al), noise ...
2
Sparse Preamble Design for Polarization Division Multiplexed CO-OFDM/OQAM Channel Estimation
... the estimation and compensation of channel dispersions for CO- OFDM/OQAM systems becomes more complicated compared to the conventional CO-OFDM ones, especially when polar- ization division multiplexing ...
10
Efficient time domain threshold for sparse channel estimation in OFDM system
... sparse channel estimation technique is proposed for orthogonal frequency division multiplexing (OFDM) ...effective channel estimation without prior knowledge of channel statistics and ...
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Channel estimation with a priori position for aeronautical communications via a satellite link
... the estimation of the aeronautical multipath ...multipath channel, we propose simple but efficient channel estimation methods that benefit from a known position of the mobile ...the ...
7
Improved channel estimation for interference cancellation in random access methods for satellite communications
... 2a 2b Fig. 1: Packets transmission with collision on slot 1 II. S YSTEM M ODEL In order to illustrate the main issues raised by imperfect channel estimation in interference cancellation based RA meth- ods, ...
6
Efficient compressed sensing based non-sample spaced sparse channel estimation in OFDM system
... τ ∈T |< f τ , r l−1 >| is not sufficient for accurate delay tracking and channel estimation with high precision. In other words, the delay points within a delay sub- set where the corresponding bases ...
10
Doubly-Selective Channel Estimation for Continuous Phase Modulation
... the channel statistics. In this case, the BEM channel estimation suffers from the unknown sparsity of the ...LS estimation with positioning a priori exhibits a large BEM modeling error as ...
8