Edell, Shapiro & Finnan, LLC
Hybrid type channel estimation method and system for mobile environment
Disclosed herein is a hybrid channel estimation method and system for an Orthogonal Frequency Division Multiplexing (OFDM) wireless communication system. The hybrid channel estimation method includes the steps of acquiring a first channel coefficient using decision-directed channel estimation; acquiring a second channel coefficient using pilot-symbol-aided channel estimation; and calculating the final channel coefficient of a received signal by multiplying the first and second coefficients by first and second multiplication coefficients, respectively, and adding the multiplication results. The step of acquiring the first channel coefficient using the decision-directed channel estimation includes the steps of acquiring an initial channel coefficient by processing a long training symbol using a Least Square (LS) method; generating data by equalizing, demodulating and modulating a fast Fourier transformed new symbol using a previously estimated channel coefficient; and acquiring a new channel coefficient by dividing the new symbol by the data.
Korea Electronics Technology Institute
H H H H H H
H04L H04L H04L H04L H04L H04L
inventional inventional inventional inventional inventional inventional
Youn Sung Jeong Wook Dong Sun Jung Wook Won Gi
Lee Seo Kim Wee Jeon