Title :
ACPR Performance Study for Modified LINC Amplifier
Author :
Elaal, Mohamed Abd ; Ghannouchi, Fadhel
Author_Institution :
Ecole Polytech de Montreal, Montreal
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;
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
DOI :
10.1109/ICECS.2006.379818
