Title :
PAPR Reduction in OFDM: SLM-Based Scrambling without Explicit Side Information for PSK Inputs
Author :
Wang, Lingyin ; Liu, Ju ; Liu, Jingkai
Author_Institution :
Sch. of Inf. Sci. & Eng., Shandong Univ., Jinan, China
Abstract :
In this paper, a scrambling scheme based on selected mapping (SLM) without explicit side information for peak-to-average power ratio (PAPR) reduction in orthogonal frequency division multiplexing (OFDM) employing phase shift keying (PSK) is proposed. Different from phase weighting process employing complex multiplications in SLM, simple scrambling process is implemented in proposed scheme, and the side information is reliably associated inside the data block by using signal constellations in different shapes. Simulation results show that, compared with optimal SLM (O-SLM), proposed scheme can obtain the same performance for PAPR reduction and better error bit ratio (BER) performance.
Keywords :
OFDM modulation; error statistics; phase shift keying; BER performance; OFDM; PAPR reduction; PSK inputs; SLM-based scrambling scheme; data block; error bit ratio; explicit side information; orthogonal frequency division multiplexing; peak-to-average power ratio reduction; phase shift keying; phase weighting process; selected mapping process; signal constellations; Bit error rate; Constellation diagram; Educational institutions; Peak to average power ratio; Phase shift keying; Receivers;
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.2011.6040051
