[PDF] Top 20 Channel Estimation with Improved OFDM

... Currently OFDM is widely used in wireless communication because of its high transmission rate and high bandwidth ...The channel response might change during an OFDM symbol period in a high-mobility ... See full document

... systems, channel estimation is a significant module which can be utilized to eliminate multipath ...an improved OFDM frame ...(CS) channel estimation scheme. As our solution, ... See full document

... the estimation of the channel in this connection is ...exact estimation of the situation of exchange channel between transmitter and ...the channel between both antennas of transmitter ... See full document

... (SNR) of various values area unit introduced through AWGN channel. information of 9600 bits is shipped within the variety of one hundred symbols, thus one image is of ninety six bits. Averaging for a selected ... See full document

... coherent OFDM-based wireless communication sys- tems can be obtained by sending pilot symbols from the transmitter to the ...the channel estimator can identify the channel characteristics in the ... See full document

... decision-directed channel estimation scheme is proposed, which is suitable for employment in a wide range of multi-antenna multi-carrier systems as well as for communications over the entire range of ... See full document

... The frequency selective fading, is caused by multipath could lead to carriers used, being heavily attenuated due to destructive interference at the receiver. The result of this is the carriers being lost in the noise ... See full document

... LMMSE channel estimator with the approximated PDP is appropriate for practical applications such as a WiMAX ...the estimation error of delay ...PDP estimation technique for the LMMSE channel ... See full document

... 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 ...loss. Channel ... See full document

... affecting channel estimation in an OFDM (Orthogonal frequency-division multiplexing) ...of estimation algorithms designed for traditional OFDM ... See full document

... each OFDM symbol is longer than or equal to the channel ...The channel length means the length of impulse response of the channel as discrete ...signal. Channel estimation ... See full document

... In communication systems, efficient use of the spectrum is an indispensable concern. Recently the use of compressed sensing for the purpose of estimating orthogonal frequency division multiplexing (OFDM) sparse ... See full document

... Abstract— Multi-carrier code division multiple access (MCCDMA)systems receive a great deal of attention due to their great potential in achieving high data rates in wireless communication. This paper presents the ... See full document

... exact estimation of Channel State Information (CSI), which is pivotal for each interchanges ...diverse channel estimation calculations for LTE Downlink ...incorporates channel ... See full document

... One approach to evaluating the equalization performance is BER analysis, but it is generally quite complex. Hence, we use PEP analysis, a technology which is widely used in space-time communications and OFDM ... See full document

... pilot-assisted estimation algorithms adopt an interpola- tion technique with fixed parameters (two-dimensional (2D) [6, 7] or one-dimensional (1D) [5]) to estimate the channel frequency response by using ... See full document

... A. Influence of the initial channel estimate In Section III three different pilot based algorithms were presented. Here, the effect of the initial estimates on the overall system performance is investigated, and ... See full document

... communication channel usually show the feature of time-varying; however, the time-varying channel has the characteristic that the channel structure within the adjacent time slots having serious time ... See full document

... To achieve high data rates(>=10Mbps) , Orthogonal frequency-division multiplexing (OFDM) is adopted as the downlink transmission scheme for the 3rd Generation Partnership Project Long Term Evolution (3GPP LTE) ... See full document

... Wireless Channel estimation methods are proposed. Blind channel estimation and pilot channel estimation have been performed on Rayleigh and Rician channels for SISO-OFDM ... See full document