A CDMA system wideband feedforward linearizer design based on an analytical model

Author

Coskun, A. Hakan ; Demir, Simsek

Author_Institution

ASELSAN Electron. Ind. Inc., Ankara, Turkey

fYear

2003

fDate

10-13 Aug. 2003

Firstpage

191

Lastpage

194

Abstract

Feedforward systems are complicated due to the presence of two nonlinear amplifiers and the requirement of amplitude, delay and phase match in two different loops. Analytical tools that characterize this complexity help the designer a lot in rapid and accurate initial optimizations, particularly for wideband applications. In this work we present a wideband feedforward linearizer design for CDMA applications, based on an analytical model and speed and accuracy aspects of the results are compared with RF simulations performed by real power amplifiers and components.

Keywords

cellular radio; code division multiple access; feedforward; optimisation; power amplifiers; radiofrequency amplifiers; wideband amplifiers; CDMA system wideband feedforward linearizer design; RF simulations; amplitude requirement; analytical model; code division multiple access; delay requirement; feedforward systems; initial optimizations; nonlinear amplifiers; phase match; real power amplifiers; Analytical models; Broadband amplifiers; Delay; Design optimization; Feedforward systems; Frequency conversion; Multiaccess communication; Power amplifiers; Radio frequency; Wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Radio and Wireless Conference, 2003. RAWCON '03. Proceedings

Print_ISBN

0-7803-7829-6

Type

conf

DOI

10.1109/RAWCON.2003.1227925

Filename

1227925