pilot-based channel estimation schemes
Comparison of Semi Blind Channel Estimation Techniques with Old Techniques for MIMO OFDM Systems
... effective channel estimation is ...the channel these bits are called ...dedicated pilot symbols which consume a non negligible part of the throughput and power resources especially for large ...
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Deterministic pilot pattern allocation optimization for sparse channel estimation based on CS theory in OFDM system
... different pilot pattern optimization ...different schemes is ...the channel estimation performance using different optimized pilot patterns to detect sparse ...of channel ...
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Performance Evaluation of Block Type and Comb Type Channel Estimation for OFDM System under Various Modulation Techniques.
... a channel estimate but its performance is inferior to the coherent ...the channel estimation which gives better performance but with relatively more complex receiver ...structure. Pilot Symbol ...
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A Survey on Channel Estimation for OFDM-IDMA Receivers Systems
... OFDM channel estimation based on piecewise- constant and piecewise-linear interpolation between pilots has been proposed for OFDM system in [15], with the drawback that they need large pilots to get ...
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Pilot symbol assisted channel estimation for OFDM-based cognitive radio systems
... CE- based method is relatively higher than that of the con- ventional reference design in ...CE-based schemes can be effectively and efficiently implemented in the real time ...
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Performance of LTE Channel Estimation Algorithms for Different Interpolation Methods and Modulation Schemes
... The Channel estimation in OFDM based systems is typically done using pilot signals called reference signals placed intermittently along with data in the time frequency ...the pilot ...
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Millimeter wave channel estimation based on subspace fitting
... the channel estimation of millimeter wave (mmWave) multiple-input multiple- output systems, where both the transmitter and receiver adopt hybrid beamforming ...mmWave channel, it can be reconstructed ...
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Analysis and implementation of OFDM system and channel estimation based IEEE 802 11A
... the channel estimates calculated from each pilot ...involves channel tracking or interpolation, in which the tracking of the time varying fading channel is realized through a filter to obtain ...
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A Review on Some Channel Prediction Techniques for MIMO-OFDM Wireless Systems
... multiuser channel prediction technique for space time block coded orthogonal frequency division multiplexing (STBC-OFDM) systems based on simple blocked pilot ...is based on least square (LS) ...
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Pilot based channel estimation for AF relaying using energy harvesting
... Energy harvesting (EH) is one of the recent advances in electronics. In particular, radio frequency (RF) energy harvesting can provide wireless power [4]. Among different RFEH techniques, far-field harvesting allows ...
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IMPLEMENTATION OF OFDM AND CHANNEL ESTIMATION USING LS AND MMSE ESTIMATOR
... comb-type based channel estimation in which pilot symbols are transmitted on some of the sub carriers of each OFDM ...interpolation schemes such as linear, low-pass, spline cubic, and ...
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Capacity of MIMO OFDM with Pilot Aided Channel Estimation
... the pilot grid for MIMO-OFDM operating in time-variant frequency selec- tive ...of pilot symbols in terms of overhead and power allocation is identified that maximizes the training-based capacity for ...
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Channel Estimation Technique for STBC coded MIMO System with Multiple ANN Blocks
... Faded channel. Estimate of the channel is calculated in terms of synaptic weights and bias values of the neural ...to pilot-based channel estimation ...of channel ...
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Probability based pilot allocation for MIMO relay Distributed compressed sensing channel estimation
... DCS-based channel estimation methods for MIMO- OFDM systems, the measurement matrix can be con- structed using random pilot ...the estimation accuracy using Restricted Isometry Property ...
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A novel pilot expansion approach for MIMO channel estimation
... The multiple-input multiple-output (MIMO) system has been recognized as one key solution for future generation fast speed communication due to its capability to exploit multipath while realizing high performance in ...
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... a Pilot Symbol Assisted Modulation (PSAM) channel estimation and compensation technique for rectangular M-QAM based on Cubic interpolation in order to determine the channel state ...
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OFDM pilot allocation for sparse channel estimation
... LS estimation is the best ...the pilot subcar- riers occupy a fraction of the spectrum, they do not convey any ...of pilot subcarriers, we increase the utilization efficiency of the spectrum while we ...
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Review of Channel Estimation Techniques in OFDM
... the channel along the time axis. Let St denote the period of pilot symbols in ...time-varying channel characteristics, the pilot symbols must be placed as frequently as the coherence time ...
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Pilot Based Channel Estimation in Broadband Power Line Communication Networks
... between channel coefficient h and estimated channel coefficient h is gained with ...(NN) estimation, and NN performance is better than LS ...estimators, channel estimations are done in fre- ...
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Study on communication channel estimation by improved SOMP based on distributed compressed sensing
... the pilot insertion mode is comb pilot with uniform spacing of 8, and the rest of CS algo- rithms adopt random ...worst estimation performance because the pilot frequency is smaller than the ...
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