Baseband predistorter for radio frequency power amplifiers based on a non-iterative, fast adaptation method

Naskas, N; Papananos, Y

dc.contributor.author	Naskas, N	en
dc.contributor.author	Papananos, Y	en
dc.date.accessioned	2014-03-01T02:42:04Z
dc.date.available	2014-03-01T02:42:04Z
dc.date.issued	2002	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/30765
dc.subject	Adaptive Method	en
dc.subject	Power Amplifier	en
dc.subject	Radio Frequency	en
dc.subject	Adjacent Channel Interference	en
dc.subject.other	Adjacent channel interference	en
dc.subject.other	Baseband predistorter	en
dc.subject.other	Digital baseband	en
dc.subject.other	Digital baseband predistortion	en
dc.subject.other	Downconversion	en
dc.subject.other	Fast adaptations	en
dc.subject.other	Gain table	en
dc.subject.other	Imaginary parts	en
dc.subject.other	Linearisation	en
dc.subject.other	Non-iterative	en
dc.subject.other	Non-iterative algorithms	en
dc.subject.other	Pre-distortion	en
dc.subject.other	Predistorters	en
dc.subject.other	Radio frequency power amplifiers	en
dc.subject.other	Simulation result	en
dc.subject.other	Table size	en
dc.subject.other	Training sequences	en
dc.subject.other	Algorithms	en
dc.subject.other	Cochannel interference	en
dc.subject.other	Convergence of numerical methods	en
dc.subject.other	Digital radio	en
dc.subject.other	Power amplifiers	en
dc.subject.other	Radio	en
dc.subject.other	Radio waves	en
dc.subject.other	Radio frequency amplifiers	en
dc.title	Baseband predistorter for radio frequency power amplifiers based on a non-iterative, fast adaptation method	en
heal.type	conferenceItem	en
heal.identifier.primary	10.1109/ICECS.2002.1045347	en
heal.identifier.secondary	http://dx.doi.org/10.1109/ICECS.2002.1045347	en
heal.identifier.secondary	1045347	en
heal.publicationDate	2002	en
heal.abstract	Adaptive digital baseband predistortion is a well known linearisation technique for removing amplitude-to-amplitude (AM/AM) and amplitude-to-phase (AM/PM) modulation that radio frequency power amplifiers (PA) produce. This paper proposes an adaptive digital baseband predistorter based on a fast adaptation, non-iterative algorithm that always guarantees convergence. The PA response in a training sequence of magnitudes, after down-conversion, is used for the estimation of the predistorter's gain table. The real and imaginary parts of the predistortion gain table are extracted in parallel without any prior polar to rectangular transformation or without extracting first the AM/AM and then the AM/PM correction table that is the usual case. Simulation results show that, for a table size of 128, an improvement in the adjacent channel interference (ACI) of 25dB can be achieved. The effect of the modulator/demodulator misalignment is also presented. © 2002 IEEE.	en
heal.journalName	Proceedings of the IEEE International Conference on Electronics, Circuits, and Systems	en
dc.identifier.doi	10.1109/ICECS.2002.1045347	en
dc.identifier.volume	1	en
dc.identifier.spage	117	en
dc.identifier.epage	120	en