Thursday, 24 September 2020

MATLAB code of TCM coded OFDM

Hello, guys today I would like to post one project in the field of communication. The title of the code is TCM (Trellis-Coded Modulation) coded OFDM (Orthogonal Frequency division multiplexing). Orthogonal frequency division multiplexing (OFDM) with index modulation (IM) is a multicarrier transmission technique for frequency-selective fading channels. Although it is energy and spectral efficient, its performance may not be satisfactory as some active subcarriers can be suppressed by fading. The YouTube video of the  MATLAB implementation of the project is shown below. just have a look.

YouTube Video of the Project:

In this post, we consider trellis-coded modulation (TCM) for OFDM in order to improve the detection performance of active subcarriers by increasing the Hamming distance between index symbols. We devise mapping rules for TCM for two cases and it is shown that the diversity order can be improved, which results in a lower probability of index error.

MATLAB Implementation of the Project:


Fig: Graphical Representation

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