New Design of Iterative Non-linear Equalizer with Parallel Concatenation Convolutional Code PC3

This paper focuses exclusively on new proposed model, which is joining equalizer with turbo decoder over mobile frequency selective channel. Separating between equalizer and decoder is presented in the system for comparison where there is no feedback connection between them. The proposed model depends on Log-MAP algorithm with few modification of soft in soft out SISO output, from PC³decoder. Proposed model uses hard decision bit for LLR code bit and feedback to the non-linear equalizer. The gain earned at different frame length and different number of iterations is between 1-0.2 dB and this gain is earned form joining the priori code bits LLR the decoder to be fed back to the non-linear equalizer. These bits enhance the decision for non-linear equalizer leading to canceling the ISI iteratively.