Title :
Enhancement of PAPR reduction using dynamic PTS algorithm in multiple antennas system
Author :
Guo-fang, Dong ; Fei, Gao ; Jing Fan ; Zi-bin, Zhao
Author_Institution :
Sch. of Phys. & Electron., Yunnan Nationalities Univ., Kunming
Abstract :
Partial transmit sequences (PTS) seems to be attractive for peak to average power ratio (PAPR) reduction in OFDM system, since it obtains better PAPR property by modifying OFDM signals without distortion. Meanwhile it also shows the potential to be utilized in MIMO-OFDM system. In this paper, a dynamic PTS algorithm with a simplified minimum maximum (minimax) criterion is proposed to optimize the phase factor in MIMO-OFDM system. By dynamic adjusting neighborhood of radius the complexity for deciding phase factor can be reduced on demand. Additionally, with the aid of guided scrambling (GS) the phase factor can be obtained directly by descrambling implementation and the PAPR can also be further reduced. Since the side information is not required to transmit to the receiver side, the overhead of the data transmission can be reduced. Simulation results show that the proposed scheme can achieve more gain in terms of PAPR reduction without any transmission of side information in the multiple antennas system.
Keywords :
MIMO systems; OFDM modulation; communication complexity; data communication; distortion; minimax techniques; transmitting antennas; MIMO-OFDM system; OFDM signals; PAPR reduction; data transmission; deciding phase factor; dynamic PTS algorithm; guided scrambling; minimax criterion; multiple antennas system; partial transmit sequences; power ratio reduction; signal distortion; Data communication; Distortion; Heuristic algorithms; Minimax techniques; OFDM; Partial transmit sequences; Peak to average power ratio; Physics; Power engineering and energy; Transmitting antennas;
Conference_Titel :
Computer and Information Technology, 2008. CIT 2008. 8th IEEE International Conference on
Conference_Location :
Sydney, NSW
Print_ISBN :
978-1-4244-2357-6
Electronic_ISBN :
978-1-4244-2358-3
DOI :
10.1109/CIT.2008.4594745