MATLAB Simulation Source Code for OFDM Channel Estimation Based on Comb-Type Pilots

MATLAB simulation source code for OFDM channel estimation based on comb-type pilots. OFDM (Orthogonal Frequency Division Multiplexing) is a widely-used modulation technique that divides signals into multiple orthogonal subcarriers for transmission, enhancing transmission efficiency and interference resistance. Comb-type pilot arrangement is a common channel estimation method where pilot signals are inserted at specific positions within OFDM symbols to accurately estimate channel fading conditions. This MATLAB implementation simulates the complete channel estimation process in OFDM systems, featuring key algorithms including: pilot insertion at equispaced subcarriers, least squares (LS) or minimum mean square error (MMSE) estimation techniques, and channel interpolation methods between pilot subcarriers. The code provides a practical framework for researchers and developers working on OFDM communication systems, offering customizable parameters for pilot spacing, signal-to-noise ratio (SNR) settings, and different channel models. This simulation tool is particularly valuable for studying channel estimation performance under various wireless propagation conditions.