Impacts of amplifier nonlinearities on uplink performance in 3G LTE systems

Author

Zheng, Kan ; Wei, Meiying ; Long, Hang ; Liu, Yang ; Wang, Wenbo

Author_Institution

Wireless Signal Process. & Network Lab. Key Lab. of Universal Wireless Commun., Minist. of Educ., Beijing Univ. of Posts & Telecommun., Beijing, China

fYear

2009

fDate

26-28 Aug. 2009

Firstpage

1

Lastpage

5

Abstract

As good candidates for uplink multiple access scheme in broadband wireless communication systems, orthogonal frequency division multiplexing (OFDM) and single-carrier (SC) with frequency division multiple access (FDMA) have gained enough attention recently. However, the non-linearity of amplifier deteriorates the performances of these two schemes. On the assumption of non-linear amplifier applied, we compare the block error rate (BLER) and throughput performances between SC-FDMA and OFDM schemes in the framework of third generation (3G) long-term evolution (LTE) systems, where the adaptive modulation and coding (AMC) technique with slow power control is used. Our simulation results show that the impacts of non-linearity on two schemes are different and dependent on several factors including the power gain of the amplifier.

Keywords

OFDM modulation; amplifiers; broadband networks; radio links; 3G LTE system; adaptive coding; adaptive modulation; amplifier nonlinearity; amplifier power gain; block error rate; broadband wireless communication system; frequency division multiple access; long-term evolution system; nonlinear amplifier; orthogonal frequency division multiplexing; power control; single-carrier; uplink multiple access scheme; Broadband amplifiers; Broadband communication; Error analysis; Frequency conversion; Frequency division multiaccess; OFDM; Power amplifiers; Power generation; Throughput; Wireless communication; AMC; HPA; OFDM; SC-FDMA;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications and Networking in China, 2009. ChinaCOM 2009. Fourth International Conference on

Conference_Location

Xian

Print_ISBN

978-1-4244-4337-6

Electronic_ISBN

978-1-4244-4337-6

Type

conf

DOI

10.1109/CHINACOM.2009.5339757

Filename

5339757