Performance comparison of phase modulated system based on DSSS with HPA nonlinearity

Author

Feng, Zhang Jian ; Jian, Cheng ; Bo, Liu ; Qiang, Yue

Author_Institution

Institute of Communication Engineering, PLA University of Science & Technology, Nanjing, 210007, China

fYear

2010

fDate

25-27 June 2010

Firstpage

13

Lastpage

17

Abstract

There have been few papers researching on effects of HPA nonlinearity towards system performance of digital phase modulation systems based on DSSS in satellite communication channel. System performance comparison of four digital phase modulation manner (based on DSSS), BPSK, QPSK, OQPSK and MSK are investigated in our paper. Two types of HPA are used in our simulation, TWTA (Traveling Wave Tube Amplifier) and SSPA (Solid State Power Amplifier). Well-known SALEH model is used for TWTA. RAPP model, which consider AM/AM distortion only and modified RAPP model, which consider both AM/AM and AM/PM distortion are adopted towards SSPA. We mainly focus on eye-diagrams, PSD and BER performance when HPA works on saturation or serious saturation area. Comparisons are made among four phase modulation manners. At last some useful and important conclusions are gotten.

Keywords

Binary phase shift keying; Phase modulation; Power amplifiers; Power system modeling; Quadrature phase shift keying; Satellite communication; Solid modeling; Solid state circuits; Spread spectrum communication; System performance; DSSS; HPA; SSPA; TWTA; nonlinearity; phase modulation; saturation;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications, Networking and Information Security (WCNIS), 2010 IEEE International Conference on

Conference_Location

Beijing, China

Print_ISBN

978-1-4244-5850-9

Type

conf

DOI

10.1109/WCINS.2010.5544052

Filename

5544052