Combined turbo equalisation and block turbo coded modulation

The combination of equalisation and turbo decoded M-QAM is studied. In a system of block turbo coding based on iterative decoding of a product code, equalisation is incorporated in the decoding iteration loop. Most research in this area has considered the trellis equaliser. When using a high throughput modulation trellis equalisation is impossible. The incorporation of a decision feedback equaliser (DFE) in the iterative decoding is studied, and simulation results show the gain achieved by incorporation of the DFE in the iteration loop.