JSCC Based on OPTA for Wireless Communication over Flat Fading Channel

A joint source channel coding scheme using bandwidth reducing has been proposed to optimize the mapping vector quantizer (VQ)-modulator symbols. The proposed two-step-algorithm optimizes first the mapping source codes-modulator symbols, and then optimizes VQ against the channel noise. To reach the target codebook size these steps are repeated iteratively. To show the proposed algorithm performance, it has been applied to transmission of a memoryless Gaussian source samples on Gaussian channel. The simulation results illustrate that a significant gain in terms of channel signal-to-noise ratio compared to a published result based on simulated annealing (SA) using a dynamic scaling of the signal. To show a subjective effect of the proposed two-step-algorithm a transmission over signal communication system including signal decomposition and mapping allocation is applied on flat fading channel.