Comparison of Pilot Symbol Embedded Channel Estimation Algorithms

Abstract

In the paper, algorithms of the pilot symbol embedded channel estimation are compared. Attention is turned to the Least Square (LS) channel estimation and the Sliding Correlator (SC) algorithm. Both algorithms are implemented in Matlab to estimate the Channel Impulse Response (CIR) of a channel exhibiting multi-path propagation. Algorithms are compared from the viewpoint of computational demands, influence of the Additive White Gaussian Noise (AWGN), an embedded pilot symbol and a computed CIR over the estimation error.

Keywords

• Channel estimation
• Least Squares
• Sliding Correlator
• AWGN channel
• Hadamard function.