LTE channel estimation IEEE PAPER
Channel estimation for LTE downlink
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Abstract 3GPP LTE is the evolution of the UMTS in response to ever-increasing demands for high quality multimedia services according to users' expectations. Since downlink is always an important factor in coverage and capacity aspects, special attention has been given in
LMS based adaptive channel estimation for LTE uplink
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In this paper, a variable step size based least mean squares (LMS) channel estimation (CE) algorithm is presented for a single carrier frequency division multiple access (SC-FDMA) system under the umbrella of the long term evolution (LTE). This unbiased CE method can
Performance evaluation of linear channel estimation algorithms for MIMO-OFDM in LTE-advanced
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Abstract In this paper two linear channel estimation techniques, Least Square Error (LSE) and Linear Minimum Mean Square Error (LMMSE) along with their modified versions, for reduced complexity, are discussed for LTE-Advanced which is based on MIMO-OFDM
Demodulation reference signal design and channel estimation for LTE-Advanced uplink
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The merits of 3GPP long term evolution (LTE), such as high spectral efficiency, very low latency, support of variable bandwidth, simple architecture, etc, make it the most competitive candidate for the next generation mobile communications standard. In the first release of
Comparative Performance Analysis of ANN Based MIMO Channel Estimationfor downlink LTE-Advanced System employing Genetic Algorithm
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Abstract:Paper propose a robust channel estimator for downlink Long T erm Evolution- Advanced (LTE-A) system using Artificial Neural Network (ANN) trained by backpropa- gation algorithm (BPA) and ANN trained by genetic algorithm (GA). The new methods use
Transform Domain based Channel Estimation for 3GPP/LTE Systems
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Orthogonal frequency division multiplexing (OFDM) is now well known as a powefull modulation scheme for high data rate wireless communications owing to its many advantages, notably its high spectral efficiency, mitigation of intersymbol interference (ISI),
Matching pursuit: Evaluation and implementatio for LTE channel estimation.
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(CS) promises better signal reconstruction out of fewer measurements if a sparse representation of the signal exists. Since wireless broadband channels often exhibit a sparse impulse response, CS reconstruction algorithms were proposed for channel
Channel estimation impact for MU-VFDM LTE small cells
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Abstract:In a previous work, we introduced a spectrum sharing technique called Multi-User Vandermonde-subspace Frequency Division Multiplexing (MU-VFDM). This overlay technique allows the coexistence of a downlink Orthogonal Frequency Division Multiple
Channel estimation for a mobile terminal in a multi-standard environment (LTEand DVB-H)
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Abstract In this paper, we present an analysis of different channel estimator structures that can be used and efficiently implemented with minor configuration changes of a common hardware for both LTE and DVB-H. Such common estimator structures for LTE and DVB-H
Channel Estimation Techniques in MIMO-OFDM LTE Systems
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ABSTRACT There is an increasing demand for high data transmission rates with the evolution of the very large scale integration (VLSI) technology. The multiple input multiple output-orthogonal frequency division multiplexing (MIMO-OFDM) systems are used to
Performance of LTE Channel Estimation Algorithms for Different Interpolation Methods and Modulation Schemes
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Abstract:-In this paper, we present performance of pilot based channel estimation techniques such as Least Squares (LS) and Linear Minimum Mean Square Error (LMMSE) for different interpolation methods and modulation schemes. The performance is
Effect of imperfect channel estimation on LTE MU-MIMO performance.
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Abstract: The performance of downlink multi-user MIMO OFDM transmission is investigated at the physical layer of 3GPP LTE. Three different types of channel estimation imperfections are presented. Performance degradations caused by this imperfect channel estimation at
Low-complexity channel estimation for LTE-based systems in time-varying channels
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Abstract For its key role in achieving high data rates, the need to develop a low-complexity targets in the Long-Term Evolution (LTE) research development. With high-mobility users in LTE-Orthogonal Frequency Division Multiplexing
An Uplink LTE-A Channel Estimation Method Based On Connexionist System
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Abstract---A new channel estimation technique for an LTEA uplink system based on the alternate pilot is introduced by this paper. The channel estimation based on the pilot block type and comb type pilot is studied by different algorithms using two methods:
Modelling Channel Estimation Error in LTE Link Level Simulations
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Abstract:Channel estimation is a key aspect for the performance of the physical layer in all MIMO-OFDM systems. In order to obtain realistic performance assessments from the LTE link level simulator, channel estimation errors must be taken into account. Implementing a
Reduced Complexity Semi-blind Channel Estimation for LTE-Downlink
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Summary The advance of MIMO techniques as a means of boosting data rate and reliability in wireless communications has challenged researchers to investigate new channel estimation methods. As MIMO multiplies the number of channel parameters, longer
A Blind Channel Estimation Technique Based on Denoising for LTE Downlink and Uplink system
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Abstract The main purpose of this paper is to introduce a blind channel estimation technique based on denoising for multiple access schemes in 3GPP Long Term Evolution (LTE) technology, which uses Orthogonal Frequency Division Multiple Access (OFDMA) in
Adaptive Channel Estimation Technique in MIMO-OFDM System for LTEUplink
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Abstract:Third generation partnership project (3GPP) long term evolution (LTE) uses single carrier frequency division multiple access (SC-FDMA) in uplink transmission and multiple input multiple output orthogonal frequency division multiple access (MIMOOFDM) scheme
Performance Evaluation of LMS and VSS-LMS Channel EstimationTechniques for LTE Uplink under Different Modulation Types
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Abstract One of the essential goal of LTE is increasing speed and capacity without consuming high power especially in uplink, in order to save battery life of user equipment as long as possible. Since SC-FDMA achieves this, it has been utilized in the uplink of 3GPP
A Neuro symbolic Learning Method for Uplink LTE-Channel Estimation
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Abstract--In this paper we propose a Neuro-symbolic Learning System (NLS) as a channel estimator for Long Term Evolution Advanced (LTE-A) uplink. The proposed system main idea based on Neural Network has modules capable of performing bidirectional
Design and Investigation of LTE 3GPP Baseband Transceiver Based Fourier Signals for Different Channel Estimation Algorithms in SUI Channels
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Abstract 3GPP LTE is the evolution of the UMTS in response to ever-increasing demands for high quality multimedia services according to users' expectations. These technologies have been selected for LTE 3GPP. Pilot-assisted channel estimation is a method in which
ASemi BLIND CHANNEL ESTIMATION METHOD BASED ON HYBRID NEURAL NETWORKS FOR UPLINK LTE-A
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ABSTRACT The paper describes how to improve channel estimation in Single Carrier Frequency Division Multiple Access (SC-FDMA) system, using a Hybrid Artificial Neural Networks (HANN). The 3rd Generation Partnership Project (3GPP) standards for uplink
PERFORMANCE ENHANCEMENT BY LMMSE CHANNEL ESTIMATIONTECHNIQUE FOR LTE-ADVANCED DOWNLINK SYSTEM
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Long Term Evolution-Advanced (LTE-A) system is based on Multiple-Input; Multiple-Output Orthogonal Frequency Division Multiplexing (MIMO-OFDM) technology has become the mainstream technology for next-generation wireless communications. To increases data
Efficient Channel Estimation Based On LTE In OFDM
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Abstract:in this paper, we propose an iterative detecting and decoding method in LTE Downlink OFDM system based on reference aided channel estimation. Estimates of the complex channel gain and variance of the additive noise are derived first from known
Channel estimation and energy optimization for LTE and LTE-A MU-MIMO Uplink with RF transmission power consumption
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Abstract Multi-user multi-input multi-output (MU-MIMO) transmission is being provided by in the uplink of the 3GPP LTE and LTE-A standards. To minimize the interference among different antenna channels care must be exercised in channel estimation according to the
Joint Detection and Channel Estimation of LTE Downlink System using Unique Iterative Decoding Technique
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Abstract:-Long Term Evolution (LTE) is emerging as a strong option towards wireless broad band. Inclusion of Orthogonal Frequency Multiplexing (OFDM) and Multiple Input Multiple Output (MIMO) has exploited the efficient spectrum utilization, realizing high bandwidth
An Improved Channel Estimation Method for Vehicular Users in LTEDownlink
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Abstract:Due to the limitation of Cell-specific Reference Signals (CRS), the channel estimation for LTE downlink system is a challenging topic, especially for vehicular users at high speed suffering from severe fading. In this paper, an improved channel estimation
LTE STANDARD: CHANNEL ESTIMATION ALGORITHMS FROM THE BASE STATION TO THE TERMINAL.
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ABSTRACT This report deals with the LTE downlink transmission scheme, from the base station to the terminal (the mobile phone), which is based on multicarrier modulation: OFDM (Orthogonal Frequency Division Multiplexing). LTE also supports the use of multiple
New Pilot Pattern Arrangement for Channel Estimation techniques in the Downlink of the LTE standard
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Abstract:One of the crucial challenges in wireless communication systems is to guarantee excellent performance particularly in time-frequency varying channel. Channel estimation has proven to be a pillar stone to achieve such a performance and is therefore still a very
Performance Evaluation of LTE-Advanced Channel Estimation Techniques in Vehicular Environments
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Least Square (LS) and Minimum Mean Square Error (MMSE), are studied for the downlink of 3GPP LTE-A system which is based on MIMO-OFDM technology. The performance of the system is evaluated using different transmission schemes (Transmit Diversity (TxD) and
A Blind Channel Estimation Technique Based on Denoising for LTE Downlink and Uplink system
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Abstract The main purpose of this paper is to introduce a blind channel estimation technique based on denoising for multiple access schemes in 3GPP Long Term Evolution (LTE) technology, which uses Orthogonal Frequency Division Multiple Access (OFDMA) in
Downlink channel estimation for LTE OFDMA system under radio environment
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Abstract:The 3rd generation partnership project (3GPP) long term evolution (LTE) project is designed for high speed data rate, higher spectral efficiency, improved services, and lower latency as well as high-capacity voice support. LTE uses orthogonal frequency division
Performance Evaluation of LMS and VSS-LMS Channel EstimationTechniques for LTE Uplink under Different Doppler Shifts
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Abstract In 3GPP LTE, OFDMA is used as a multiple access technique in downlink while SC- FDMA is used in uplink since it has low PAPR compared with ODFMA and that will lead to saving power of transmitter (MS). In this paper SC-FDMA is modeled and LMS and VSS-
Iterative Channel Estimation for LTE UL
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Abstract LTE is a mobile communications standard that is spreading fast across the world. Two of the reasons are the high throughput offered and the adaptability in spectrum allocations. To be able to offer a high throughput the communication channel between the
An Efficient Channel Estimation of Mimo_OFDM System LTE Network
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Abstract: Future wireless communication system have to be designed to integrate features such as high data rates, high quality of service and multimedia in the existing communication framework. Increased demand inwireless communication system has led
Improved Channel Estimation Algorithms based on a Proposed Signal Model for PUCCH Format 3 in LTE-A
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Abstract SORTD (Space Orthogonal-Resource Transmit Diversity) has already become a better way of transmit diversity for PUCCH format 3 in LTE-A [1]. SORTD technology lies in the characteristic that each antenna port transmits signal by using different cyclic shift [2] to
A Novel estimation and Correction of Channel errors in LTE SYSTEMS
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Abstract:-The increase in the number of RF devices and the requirement for large data rates places major role in increasing demand on bandwidth. This necessitates the need for RF communication systems with increased throughput and capacity. MIMO-OFDM is one way
A Pilot Based RLS Channel Estimation for LTE SC-FDMA in High Doppler Spread
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Abstract:Main challenges for a terminal implementation are efficient realization of the inner receiver, especially for channel estimation (CE) and equalization. In this paper, pilot based recursive least square (RLS) channel estimator technique is investigate for a long term
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