Successive Cancellation of Power Amplifier Distortion for Multiuser Detection

Author

Tehrani, Ali Soltani ; Cao, Haiying ; Behravan, Ali ; Eriksson, Thomas ; Fager, Christian

Author_Institution

Dept. of Signals & Syst., Chalmers Univ. of Technol., Gothenburg, Sweden

fYear

2010

fDate

6-9 Sept. 2010

Firstpage

1

Lastpage

5

Abstract

This paper presents an iterative interference suppression technique to cancel power amplifier (PA) distortion at the receiver. The focus is mainly on single carrier frequency division multiple access systems, and on removing the distortion created by adjacent users´ power amplifier. It is assumed that the receiver has perfect knowledge of all the users´ transmitter power amplifier nonlinearities. By relaxing the requirement on PA linearity at the mobile terminals, the PA power efficiency can be improved. The simulations show that by utilizing the successive interference cancelation technique, the require signal to noise ratio required to achieve 10^-3 symbol error rate is decreased by 3 - 4 dB. By using a clipped communication signal instead of backing off the power in the transmitter PA, we are able to improve the power added efficiency by 8 percentage points.

Keywords

frequency division multiple access; interference suppression; iterative methods; multiuser detection; power amplifiers; radio receivers; radio transmitters; clipped communication signal; interference cancelation; iterative interference suppression; multiuser detection; power amplifier distortion; radio receiver; single carrier frequency division multiple access systems; symbol error rate; user transmitter; Nonlinear distortion; Peak to average power ratio; Radio frequency; Receivers; Transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference Fall (VTC 2010-Fall), 2010 IEEE 72nd

Conference_Location

Ottawa, ON

ISSN

1090-3038

Print_ISBN

978-1-4244-3573-9

Electronic_ISBN

1090-3038

Type

conf

DOI

10.1109/VETECF.2010.5594196

Filename

5594196