Abstract
To solve the problem of low power efficiency of power amplifiers (PA) in the high peak-to-average-power ratio (PAPR) communication system, a novel signal decomposed amplifier structure has been proposed in order to decrease the energy consumption and increase the power efficiency of PA. The high PAPR signal can be decomposed into several low PAPR branch signals, linearized and amplified in parallel. This structure can reduce the PAPR of branch signals and improve the power efficiency of PA. The simulation results indicate that the power efficiency will be remarkably increased.
References
Armour S, O’Farrell T, Flectecher S. Green radio: sustainable wireless network. http://kn.theiet.org/magazine/rateit/communi-cations/green-radio-article.cfm, 2009
Karl H. An overview of energy-efficiency techniques for mobile communication system. Telecommunication Networks Group, Technical University Berlin, Berlin, Germany, Technical Report, TKN-03-017, 2003
Wang J, Chen J. Performance of wideband CDMA with complex spreading and imperfect channel estimation. IEEE J Select Areas Commun, 2001, 19: 52–163
Park H, Park J S. Threshold IBO of HPA in the predistorted OFDM communication system. IEEE Trans Broadcast, 2004, 50: 425–428
Mann S, Beach M, Warr P, et al. Increasing the talk-time of mobile radios with efficient linear transmitter architectures. Electr Commun Eng J, 2001, 13: 65–76
Ochiai H. Amplifier efficiencies of OFDM systems with peak power and envelope variance reduction. In: Proc 2006 IEEE International Symposium on Signal Processing and Information Technology, Singapore, 2006. 828–833
Kousai S, Hajimiri A. An octave-range, Watt-level. Fully-integrated CMOS switching power mixer array for linearization and back-off-efficiency improvement. IEEE J Solid State Circ, 2009, 44: 3376–3392
Wright A S, Durtler W G, Teltech M, et al. Experimental performance of an adaptive digital linearized power amplifier. IEEE Trans Vehic Tech, 1992, 41: 395–400
Jardin P, Baudoin G. Filter lookup table method for power amplifier linearization. IEEE Trans Vehic Tech, 2007, 56: 1076–1087
Ren Z Y, Zhang H L. Filter lookup table with a frequency predistorter structure for the memory nonlinear power amplifier in the OFDM system. J Xidian Univ, 2009, 36: 777–781
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Ren, Z., Zhang, H. & Guo, K. A novel method for the improvement of power efficiency in high peak-to-average-power ratio communication systems. Sci. China Inf. Sci. 53, 1697–1702 (2010). https://doi.org/10.1007/s11432-010-4033-6
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11432-010-4033-6