Blind Peak-to-Average Power Ratio Reduction Technique for WiMAX RF Front-end

Author

Han Gil Bae ; Helaoui, Mohamed ; Seregin, Anton ; Boumaiza, Slim ; Ghannouchi, Fadhel M.

Author_Institution

Dept. of Electr. & Comput., Calgary Univ., Alta.

fYear

2006

fDate

10-15 Sept. 2006

Firstpage

149

Lastpage

152

Abstract

This paper proposes a new technique for peak-to-average power ratio (PAPR) reduction using post-compensation for a RF front-end of OFDM-based transmitters. A clipping function is first applied to the base band input signal in order to optimize the efficiency of the power amplifier (PA). Then a post-compensation technique is used to correct for the clipping in-band and out-of-band noise. The injection of the error signal, computed digitally in base band and transposed to the RF frequency, at the output of the PA allowed the reduction of the error vector magnitude and adjacent channel interference ratio

Keywords

OFDM modulation; WiMax; limiters; radio transmitters; OFDM transmitters; RF front-end; WiMax; adjacent channel interference reduction; blind peak-to-average power ratio reduction; clipping function; error vector magnitude reduction; orthogonal frequency division multiplexing; post-compensation technique; Feedforward systems; Linearity; OFDM; Peak to average power ratio; Power amplifiers; Predistortion; Radio frequency; Radiofrequency amplifiers; Transmitters; WiMAX; Error Vector Magnitude; Orthogonal Frequency Division Multiplexing; Peak-to-Average Power Ratio; clipping;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2006. 36th European

Conference_Location

Manchester

Print_ISBN

2-9600551-6-0

Type

conf

DOI

10.1109/EUMC.2006.281240

Filename

4057769