TY  - JOUR
TT  - Channel Estimation Techniques for MIMO-OFDM Systems over Frequency Selective Fading Channels
AU  - Üstün Ercan, Seda
PY  - 2016
DA  - December
DO  - 10.18100/ijamec.270714
JF  - International Journal of Applied Mathematics Electronics and Computers
PB  - PLUSBASE AKADEMİ ORGANİZASYON VE DANIŞMANLIK
WT  - DergiPark
SN  - 2147-8228
SP  - 33
EP  - 36
IS  - Special Issue-1
KW  - MIMO-OFDM
KW  - pilot based
KW  - semi-blind
KW  - channel estimation
KW  - ICA
N2  - Wireless channel is very complex because of both frequency and time selectivity. In orderto overcome the adverse effects of multipath fading in mobile communicationchannels, channel estimation must be performed.There are three kinds of channel estimation methods: pilot based, blindand semi-blind. In pilot based channel estimation, some of data symbols areused to estimate channel. In blind channel estimation statistical properties ofchannel are used. In semi-blind channel estimation information from both datasymbols and statistical properties is utilized. In this study, pilot based andsemi-blind channel estimation are used to estimate the channels with variousfrequency selectivity in multiple input multiple output-orthogonal frequencydivision multiplexing (MIMO-OFDM) systems. Semi-blind channel estimation isdone by using independent component analysis (ICA). Simulation results showthat if the frequency selectivity of the channel is high, semi-blind channelestimation technique can be used instead of pilot based channel estimation. Thuswith a using a small number of pilot bits, more data can be used in the MIMOsystems.
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UR  - https://doi.org/10.18100/ijamec.270714
L1  - https://dergipark.org.tr/en/download/article-file/237447
ER  -