TY - GEN
T1 - Power amplifiers linearization based on digital predistortion with memory effects used in CDMA
AU - Varahram, P.
AU - Jamuar, S. S.
AU - Mohammady, S.
AU - Hamidon, M. N.
PY - 2007
Y1 - 2007
N2 - Efficient RF power amplifiers used in third generation systems require linearization in order to reduce adjacent channel inter-modulation distortion, without sacrificing efficiency. Digital baseband predistortion is a highly cost-effective way to linearize Power amplifiers (PAs), but most existing architectures assume that the PA has a memoryless nonlinearity. For wider bandwidth applications such as wideband code-division multiple access (WCDMA) or wideband orthogonal frequency-division multiplexing (W-OFDM), PA memory effects can no longer be ignored. In this paper we proposed a new technique for adaptation of digital predistorter that considers memory effects in power amplifiers. This new technique is validated by using a 1.9 GHz 85W LDMOS power amplifier and various signals such as 3-carrier CDMA and IS95 CDMA. digital predistortion, memory effect, ACPR, power amplifier, CDMA.
AB - Efficient RF power amplifiers used in third generation systems require linearization in order to reduce adjacent channel inter-modulation distortion, without sacrificing efficiency. Digital baseband predistortion is a highly cost-effective way to linearize Power amplifiers (PAs), but most existing architectures assume that the PA has a memoryless nonlinearity. For wider bandwidth applications such as wideband code-division multiple access (WCDMA) or wideband orthogonal frequency-division multiplexing (W-OFDM), PA memory effects can no longer be ignored. In this paper we proposed a new technique for adaptation of digital predistorter that considers memory effects in power amplifiers. This new technique is validated by using a 1.9 GHz 85W LDMOS power amplifier and various signals such as 3-carrier CDMA and IS95 CDMA. digital predistortion, memory effect, ACPR, power amplifier, CDMA.
UR - http://www.scopus.com/inward/record.url?scp=34748897729&partnerID=8YFLogxK
U2 - 10.1109/ICMMT.2007.381487
DO - 10.1109/ICMMT.2007.381487
M3 - Conference contribution
AN - SCOPUS:34748897729
SN - 1424410495
SN - 9781424410491
T3 - 2007 International Conference on Microwave and Millimeter Wave Technology, ICMMT '07
BT - 2007 International Conference on Microwave and Millimeter Wave Technology, ICMMT '07
T2 - 2007 International Conference on Microwave and Millimeter Wave Technology, ICMMT '07
Y2 - 18 April 2007 through 21 April 2007
ER -