Title :
Peak-to-Average Power Ratio Analysis of DC-OFDM Signals and Its Reduction Method
Author :
Liu, Qi ; Pan, Feng ; Yang, Fei ; Wang, Shubin
Author_Institution :
Plan & Design Res. Inst., China Acad. of Telecommun. Res. of MIIT, Beijing, China
Abstract :
In this paper, a statistical analysis of peak-to-average power ratio (PAPR) for complex-value OFDM signals and real-value OFDM signals using differential coding (DC) is presented. DC-OFDM has the good performance of compressing intercarrier interference (ICI) at the cost of high PAPR. Adjacent partial transmit sequence (PTS) is a proper method to reduce the PAPR of DC-OFDM. The simulation results show that the theoretic analysis is very close to experimental result. The complex-value DC-OFDM system exhibits near 2dB PAPR higher than the same type normal OFDM. PTS with V=4 can reduce the PAPR of DC-OFDM to the normal complex-value OFDM level.
Keywords :
OFDM modulation; encoding; DC-OFDM signals; PAPR; differential coding; orthogonal frequency division multiplexing; peak-to-average power ratio analysis; Encoding; Information technology; Interference; Modulation; Partial transmit sequences; Peak to average power ratio;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing (WiCOM), 2011 7th International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-6250-6
DOI :
10.1109/wicom.2011.6040039
