Title :
Impact of nonlinear amplifiers on the UMTS system
Author :
Springer, A. ; Frauscher, T. ; Adler, B. ; Pimingsdorfer, D. ; Weigel, R.
Author_Institution :
Inst. for Commun. & Inf. Eng., Linz Univ., Austria
Abstract :
We report on the impact of distortions caused by a nonlinear amplifier on the performance of a transmitter for the Universal Mobile Telecommunications System (UMTS). A system overview of the UMTS Terrestrial Radio Access (UTRA) physical layer is given. System simulations of an UMTS transmitter designed for commercial use are described. The degradation of the UMTS transmit signal in terms of error vector magnitude (EVM) and adjacent channel power ratio (ACPR) is discussed and related to the power amplifier (PA) characteristics like 3 rd order intercept point and 1 dB compression point. Furthermore the impact on the uncoded bit error rate is investigated
Keywords :
error statistics; land mobile radio; nonlinear distortion; power amplifiers; radio access networks; radio transmitters; radiofrequency amplifiers; telecommunication channels; 1 dB compression point; AM/AM conversion; BER performance; UMTS Terrestrial Radio Access; UMTS system; UMTS transmitter; UTRA physical layer; Universal Mobile Telecommunications System; adjacent channel power ratio; error vector magnitude; nonlinear amplifiers; nonlinear distortion; power amplifier characteristics; system simulations; third order intercept point; transmitter performance; uncoded bit error rate; 3G mobile communication; Binary phase shift keying; Bit rate; Constellation diagram; Filters; Frequency conversion; Multiaccess communication; Phase modulation; Physical layer; Radio transmitters;
Conference_Titel :
Spread Spectrum Techniques and Applications, 2000 IEEE Sixth International Symposium on
Conference_Location :
Parsippany, NJ
Print_ISBN :
0-7803-6560-7
DOI :
10.1109/ISSSTA.2000.876477
