Title :
Rate increase in digital communications by using master-slave power amplifiers
Author :
Gutman, Igor ; Iofedov, Ilia ; Wulich, Dov
Author_Institution :
Dept. of Electr. & Comput. Eng., Ben-Gurion Univ. of the Negev, Beer-Sheva, Israel
Abstract :
In this paper we propose to use a so-called “Slave” power amplifier (PA) to remove the distortions caused by the non-linear “Master” high power amplifier (HPA) in multicarrier systems. We derive the mutual information (MI) expressions for the proposed scheme and perform simulations to obtain the spectral mask. It is shown that by adding an additional “Slave” PA we increase the MI and improve the spectral mask, while maintaining the same supplied power as in regular multicarrier system with a single “Master” HPA.
Keywords :
digital communication; power amplifiers; MI expression; digital communications; distortions; master HPA; master-slave high power amplifiers; mutual information expression; spectral mask; AWGN; Mutual information; Nonlinear distortion; OFDM; Radio frequency; Standards; Transmitters; High power amplifier; Multicarrier systems; Mutual information;
Conference_Titel :
Personal Indoor and Mobile Radio Communications (PIMRC), 2012 IEEE 23rd International Symposium on
Conference_Location :
Sydney, NSW
Print_ISBN :
978-1-4673-2566-0
Electronic_ISBN :
2166-9570
DOI :
10.1109/PIMRC.2012.6362762