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

fYear

2013

fDate

1-4 April 2013

Firstpage

100

Lastpage

104

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Computing, Communications and IT Applications Conference (ComComAp), 2013

Conference_Location

Hong Kong

Print_ISBN

978-1-4673-6043-2

Type

conf

DOI

10.1109/ComComAp.2013.6533617

Filename

6533617