Application of Adaptive Filter Using Adaptive Line Enhancer Techniques

Performance Analysis of NLMS Channel Estimation for AMC-COFDM System

“…The block diagram represents the whole system model. Basically, the proposed system is divided in two main sections namely transmitter and receiver: At the transmitter level, the digital bits are randomly generated and encoded using an adaptive conventional coding technique, where three coding rates are proposed (1/2, 3/4, 2/3) with a constraint length of 3 and a polynomial generator [7,5]8. The sequence at the encoder output is permuted.…”

“…The parameter µ is step size (a small positive constant) which controls the influence of the updating factor. The choice of a suitable value for μ is imperative to the performance of the LMS algorithm, if it is too small the time the adaptive filter takes to converge on the optimal solution will be too long; if μ is too large the adaptive filter becomes unstable and its output diverges [7,8].…”