A broadband inverted Doherty power amplifier for IEEE 802.11b/g WLAN applications

Abstract

In this article, we successfully validated the VSTF on coherent optical ultradense WDM and analyzed the transmission impact of XPM/FWM on 16-QAM signals. From the studies it is visible that for mixed phase/amplitude coherent signals, in the higher power symbols we will have similar degradation caused by XPM and FWM, and it becomes more visible for longer fibers.|| ACKNOWLEDGMENTS This work was supported by the EURO-FOS project, a Network of Excellence funded by the EU 7th ICT-FP. J.D. Reis also acknowledges his PhD grant from FCT (SFRH/43941/2008). 2. X. Zhou et al., 64-Tb/s (640X107-Gb/s) PDM-36QAM Transmission over 320km using both pre-and post-transmission digital equalization, In: Proceedings of Conference Optical Fiber Communication (OFC), 2010, p.PDPB9. 3. K.V. Peddanarappagari and B.M. Pearce, Volterra series transfer function of single-mode fibers, IEEE/OSA J Lightwave Technol 15 (1997), 2232-2241. 4. R. Weidenfeld, M. Nazarathy, R. Noe, and I. Shpatzer, Volterra nonlinear compensation of 112 Gb/s ultra-long-haul coherent optical OFDM based on frequency-shaped decision feedback, In:

Design of an S-Band Two-Way Inverted Asymmetrical Doherty Power Amplifier for Long Term Evolution Applications

“…On the other hand, the inserted loss of output matching network cannot be ignored because of its effect on the Doherty PA's efficiency. Therefore, the design of inverted structure, reducing inserted loss of output matching network in carrier cell is also necessary [10][11][12][13]. However, the combined use of these two effective technologies is rarely reported, especially for LTE application with large output power back-off (OPBO).…”