Iterative Signal Processing for Mitigation of Analog-to-Digital Converter Clipping Distortion in Multiband OFDMA Receivers

Figure 2

Undesired clipping distortion is caused by the A/D converter on the receiver side. Block diagrams of traditional OFDM transmitter and two alternative receivers implementing the proposed clipping compensation algorithm are illustrated. In Receiver A, bits are decoded on every compensation iteration round whereas Receiver B first iterates the clipping compensation on symbol level and only in the end decodes the information bits.