Low PAPR Precoding Design with Dynamic Channel Assignment for SCBT System

The single carrier block transmission (SCBT) system has become one of most popular modulation system due to its low peak to average power ratio (PAPR). In this paper, the precoding systems at the transmitter side are proposed to retain low PAPR, acquire better performance, and reduce the computation complexity at receiver side. It is designed in accordance with the following procedure. First, the upper-triangular dirty paper coding (UDPC) is proposed to pre-cancel the multiple streams interference and post one-tap time-domain equalizer for SCBT system. Next, to overcome the high PAPR problem for UDPC precoding system, Tomlinson-Harashima precoding (THP) is introduced to maintain low PAPR performance. Finally, because the UDPC-THP system will be degraded by the deep fading channel, the dynamic channel on/off assignment via the water filling algorithm is proposed to enhance bit error rate (BER) performance. Simulation results show that the proposed precoding transceiver can provide excellent BER and low PAPR performances for SCBT system over multipath fading channel.