Concurrent PAR and power amplifier adaptation for power efficient operation of WiMAX OFDM transmitters
作者： Shreyas Sen , Rajarajan Senguttuvan , Abhijit Chatterjee
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摘要: High peak-to-average ratio (PAR) of OFDM signals is a major bottleneck in the implementation power efficient transmitters since efficiency linear RF amplifier reduce drastically due to backoff requirements. In this paper, concurrent approach that uses adaptive baseband companding/ expanding signal along with dynamic PA biasing achieve significant savings proposed. While using existing channel estimation techniques drive PAR adaptation, proposed achieves reduction as high 7.25 dB and 5.27X when conditions are good.
sci-hub.se 参考文章(6)
Youping Zhao, B.G. Agee, J.H. Reed, Simulation and measurement of microwave oven leakage for 802.11 WLAN interference management ieee international symposium on microwave, antenna, propagation and emc technologies for wireless communications. ,vol. 2, pp. 1580- 1583 ,(2005) , 10.1109/MAPE.2005.1618229
J. Armstrong, Peak-to-average power reduction for OFDM by repeated clipping and frequency domain filtering Electronics Letters. ,vol. 38, pp. 246- 247 ,(2002) , 10.1049/EL:20020175
Jau-Horng Chen, J. Stevenson Kenney, A Crest Factor Reduction Technique for W-CDMA Polar Transmitters radio and wireless symposium. pp. 345- 348 ,(2007) , 10.1109/RWS.2007.351839
B.S. Krongold, D.L. Jones, An active-set approach for OFDM PAR reduction via tone reservation IEEE Transactions on Signal Processing. ,vol. 52, pp. 495- 509 ,(2004) , 10.1109/TSP.2003.821110
S.H. Han, J.H. Lee, PAPR Reduction of OFDM Signals Using a Reduced Complexity PTS Technique IEEE Signal Processing Letters. ,vol. 11, pp. 887- 890 ,(2004) , 10.1109/LSP.2004.833490
Seung Hee Han, Jae Hong Lee, Reduction of PAPR of an OFDM signal by partial transmit sequence technique with reduced complexity global communications conference. ,vol. 3, pp. 1326- 1329 ,(2003) , 10.1109/GLOCOM.2003.1258453