Decision-Directed Channel Estimation for Multi-User
Multi User OFDM Employing Parallel Interference Cancellation Assisted Decision Directed Channel Estimation
... priori channel estimator’s ...priori channel transfer function estimator range of four taps was ...the estimation process due to the channel transfer function decorrelation between successive ...
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RLS Adaptive Parallel Interference Cancellation Assisted Decision directed Channel Estimation for OFDM
... a multi-user scenario of four transmit antennas and four BS receiver antennas was confirmed in Figures 5 and ...WATM channel model of [6], the BER performance achieved using the proposed estimator ...
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Smoothing techniques for decision-directed MIMO OFDM channel estimation
... accurate channel estimate at the receiver, which is gained ei- ther by evaluation of reference symbols which requires des- ignated resources in the transmit signal or decision-directed ...the ...
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Decision Directed Channel Estimation Employing Projection Approximation Subspace Tracking
... broadband multi-carrier communication system is highly sensitive to the accuracy of the information available concerning the channel conditions ...advanced channel estimation schemes assume ...
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Generic MMSE Decision Directed Channel Estimation for OFDM and MC CDMA
... (MMSE) Channel Impulse Response (CIR) estimator-aided Decision Directed Channel Estimation (DDCE) method, which is suitable for employment in both OFDM and MC-CDMA ...Domain ...
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Decision-Directed Channel Estimation Implementation for Spectral Efficiency Improvement in Mobile MIMO-OFDM
... each channel estimator is comparable only to other chan- nel estimators presented in this paper as the results depend on the used implementation method and ...other channel estimation implementations ...
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Improving MIMO-OFDM decision-directed channel estimation by utilizing error-correcting codes
... improves the channel estimate quality in terms of MSE. All solid lines, which denote the enhanced scheme, finally are below the dashed ones, which denote the basic DDCE approach, even for 16-QAM modulation which ...
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Sample Spaced and Fractionally Spaced CIR Estimation Aided Decision Directed Channel Estimation for OFDM and MC CDMA
... The rest of this paper is structured as follows. The channel model and the corresponding system model are described in Section II. The Reduced Complexity (RC) MMSE SS-CIR estimator introduced in Acknowledgements: ...
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Burst allocation method to enable decision directed channel estimation for mobile WiMAX downlink transmission
... DL-MAP to achieve better BER performance for the next two OFDMA symbols. For these DD-enabled MSs, bursts which are allocated starting from symbols 3 and 4, such as data bursts no. 1, no. 2, and no. 3 in Figure 6, have ...
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Decision Directed Channel Estimation Aided OFDM Employing Sample Spaced and Fractionally Spaced CIR Estimators
... current channel state based on the a posteriori information gleaned concerning the received subcarrier-related ...error-infested decision-based estimate ˆ s [ n ...pilot-based channel sounding ...
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Iterative Joint Channel Estimation and Symbol Detection for Multi User MIMO OFDM
... was assumed and the GA-JCEMUD used a single iteration. As seen at the left-hand side of Figure 2, the performances of the GA-JCEMUD aided systems degraded, when F D was increased, since channel es- timation ...
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Iterative receivers with channel estimation for multi user MIMO OFDM: complexity and performance
... different user loads and E b /N 0 , is shown for a target BER of 10 -3 ...of channel esti- mation ...higher user loads though, the PIC-MMSE detector gives the best trade-off between complexity and ...
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Parallel Interference Cancellation Assisted Decision Directed Channel Estimation for OFDM Systems using Multiple Transmit Antennas
... the K 0 largest tap variances from the decomposition Υ [f unif ](j) = U ˜ [f](j)H R [f](j) unif U ˜ [f](j) of the specific space–frequency corre- lation matrices of the channel with respect to U ˜ [f](j) = W. 14 ...
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Iterative Joint Channel Estimation and Multi User Detection for Multiple Antenna Aided OFDM Systems
... joint channel estimation and multi-user detection scheme generating soft outputs constitutes an effective solu- tion to the channel estimation problem in multi-user ...
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Channel Estimation in Massive Multi-User MIMO Systems Based on Low-Rank Matrix Approximation
... massive Multi-User Multi-Input Multi-Output (MU-MIMO) system has attracted significant research interests in mobile communication ...the channel estimation in massive MU-MIMO ...
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Joint Channel Estimation Based On Compressive Sensing For Multi-User Massive Mimo-Ofdm Systems
... of channel state information (CSI) at the transmitter becomes rather ...of channel estimation, this paper utilizes a new CSI estimation scheme and the hidden joint sparsity structure in ...
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Channel Estimation for Frequency Division Duplexing Multi-user Massive MIMO Systems via Tensor Compressive Sensing
... the channel of massive MU-MIMO system 13 , the channel coefficient matrices tend to be sparse, as the number of transmitting antennas increases at the ...CSIT estimation approaches have been proposed ...
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Performance of Multi-antenna Wireless Systems with Channel Estimation Error
... BSs are roughly located based on carefully planned layouts and are almost identical in terms of transmit power, antenna configurations, etc, creating a homogeneous network. To decrease the total number of macro BSs that ...
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Channel estimation for MIMO multi relay systems using a tensor approach
... 4 Extension to two-way MIMO relaying systems In the previous sections, we have focused on a multi-relay cooperative scheme, where transmission is directed in one direction, i.e., from a specific source to a ...
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BLIND CHANNEL ESTIMATION AND MULTIUSER DETECTION FOR MULTI-RATE CDMA COMMUNICATIONS
... desired user is ...case, user 1 and user 6 are chosen as the reference users for low-rate and high-rate blind linear detectors, respectively, and the delay for the kth rate i user is set to be ...
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