Title :
Power amplifier linearization using baseband digital predistortion for WiMAX applications
Author :
Chen, Chi-Tsan ; Li, Chien-Jung ; Du, J.-Y. ; Horng, Tzyy-Sheng ; Jau, Je-Kuan ; Li, Jian-Yu ; Horng, P.-K. ; Deng, D.-S.
Author_Institution :
Dept. of Electr. Eng., Nat. Sun Yat-Sen Univ., Kaohsiung
Abstract :
The developed baseband digital predistortion successfully linearizes the PA up to its saturated power. The average PA efficiency will expectedly enhance since the PA operates in the higher, more efficient, power region as well as meets the IEEE 802.16d spectrum mask and RCE specification. At the same M-IMR, which is -28.7 dBc, under ten-tone CW measurement, the predistorted PA is 2.9% higher in efficiency than before.
Keywords :
WiMax; linearisation techniques; power amplifiers; IEEE 802.16d spectrum mask; RCE specification; WiMAX application; baseband digital predistortion; power amplifier linearization; relative constellation error; Baseband; Nonlinear distortion; Phase distortion; Power amplifiers; Power generation; Predistortion; Signal generators; Table lookup; Testing; WiMAX;
Conference_Titel :
Microwave Conference, 2008. APMC 2008. Asia-Pacific
Conference_Location :
Macau
Print_ISBN :
978-1-4244-2641-6
Electronic_ISBN :
978-1-4244-2642-3
DOI :
10.1109/APMC.2008.4958286
