ACPR Performance Study for Modified LINC Amplifier

Author

Elaal, Mohamed Abd ; Ghannouchi, Fadhel

Author_Institution

Ecole Polytech de Montreal, Montreal

fYear

2006

fDate

10-13 Dec. 2006

Firstpage

435

Lastpage

438

Abstract

A study for the adjacent channel power ratio (ACPR) for modified linear amplification using nonlinear component (LINC) power amplifiers used in wireless communication systems when branch signals are digitally baseband filtered is proposed. The LINC is modified by sending the filtered branch signals and then combine them at the receiver. The IEEE802.11g standard, which operates at 2.4 GHz, employing the OFDM signals is used to show the system performance compatibility with the standard and efficiency improvements. Results show that the ACPR is lowered when using a least square filter, from -26.1dBc to -63.8dBc. The efficiency is improved by 3.4 times when compared with that of a regular LINC.

Keywords

OFDM modulation; UHF power amplifiers; adjacent channel interference; digital filters; nonlinear filters; wireless LAN; ACPR performance; IEEE802.11g standard; OFDM signals; adjacent channel power ratio; digital baseband filter; filtered branch signals; frequency 2.4 GHz; least square filter; modified linear amplification; nonlinear component power amplifiers; system performance compatibility; wireless communication systems; Baseband; Degradation; Digital filters; Linearity; Nonlinear distortion; OFDM; Power amplifiers; Radio frequency; Radiofrequency amplifiers; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics, Circuits and Systems, 2006. ICECS '06. 13th IEEE International Conference on

Conference_Location

Nice

Print_ISBN

1-4244-0395-2

Electronic_ISBN

1-4244-0395-2

Type

conf

DOI

10.1109/ICECS.2006.379818

Filename

4263396