DocumentCode :
1604815
Title :
Comparison of Power Amplifier Non-Linearity Impact on 60 GHz Single Carrier and OFDM Systems
Author :
Maltsev, Alexander ; Lomayev, Artyom ; Khoryaev, Alexey ; Sevastyanov, Alexey ; Maslennikov, Roman
Author_Institution :
Wireless Stand. & Technol. Group, Intel Corp., Nizhny Novgorod, Russia
fYear :
2010
Firstpage :
1
Lastpage :
5
Abstract :
This paper presents a detailed analysis of the impact of power amplifier (PA) non-linearity on the performance of single carrier (SC) and OFDM systems in 60 GHz spectrum. The efficiency of the considered systems was analyzed by estimating values of the power amplifier output backoff needed to meet the requirements on the transmit spectrum mask (TSM) compliance and error vector magnitude (EVM). Different models of the PA including an experimentally measured model for the 60 GHz PA were considered. It was estimated that for many types of modulations and PA models, SC system can have up to 1.5 dB higher output power than OFDM system. However, for the experimental PA model accounting for amplitude modulation-phase modulation distortion in addition to amplitude modulation amplitude modulation distortion, the difference between the OFDM and SC output power levels was minimal, and OFDM even had approximately 1 dB better performance than SC for the BPSK modulation. A potential improvement in the transmit power due to application of digital predistortion techniques was estimated for both systems to be in the range from 1.5 to 3.4 dB.
Keywords :
OFDM modulation; phase shift keying; power amplifiers; radiocommunication; BPSK modulation; OFDM systems; amplitude modulation-phase modulation distortion; digital predistortion techniques; error vector magnitude; frequency 60 GHz; power amplifier; single carrier; transmit spectrum mask compliance; Amplitude modulation; Interpolation; Nonlinear distortion; OFDM modulation; Performance analysis; Power amplifiers; Power generation; Power system modeling; Predistortion; Wireless LAN;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Consumer Communications and Networking Conference (CCNC), 2010 7th IEEE
Conference_Location :
Las Vegas, NV
Print_ISBN :
978-1-4244-5175-3
Electronic_ISBN :
978-1-4244-5176-0
Type :
conf
DOI :
10.1109/CCNC.2010.5421601
Filename :
5421601
Link To Document :
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