Title :
A novel peak-to-average power ratio reduction method for amplitude phase shift keying
Author :
Jun Wang ; Zhenyu Liu ; Ziwei Luo ; Zhaocheng Wang
Author_Institution :
Dept. of Electron. Eng., Tsinghua Univ., Beijing, China
Abstract :
Orthogonal frequency division multiplexing (OFDM) is one of the key technologies adopted in modern communication systems. However, it suffers from high peak-to-average power ratio (PAPR) problem, which limits the efficiency of the power amplifier (PA). This paper presents a novel PAPR reduction method for amplitude phase shift keying (APSK) modulation. The amplitude of the transmit signal in time domain is firstly limited and afterwards the corresponding constellation points in frequency domain are dynamically extended to mitigate the distortion caused by the amplitude clipping. Simulation results show that the proposed scheme alleviates the PAPR problem substantially without sacrificing the error-rate performance.
Keywords :
OFDM modulation; amplitude shift keying; frequency-domain analysis; phase shift keying; power amplifiers; time-domain analysis; APSK modulation; OFDM; PA; PAPR problem; PAPR reduction method; amplitude clipping; amplitude phase shift keying modulation; communication systems; constellation points; distortion mitigation; error-rate performance; frequency domain analysis; orthogonal frequency division multiplexing; peak-to-average power ratio reduction method; power amplifier; time domain analysis; AWGN channels; Digital video broadcasting; Frequency-domain analysis; Peak to average power ratio; Phase shift keying; Time-domain analysis; APSK; Active constellation extension; OFDM; Peak-to-average power ratio;
Conference_Titel :
Computing, Communications and IT Applications Conference (ComComAp), 2013
Conference_Location :
Hong Kong
Print_ISBN :
978-1-4673-6043-2
DOI :
10.1109/ComComAp.2013.6533617
