Title :
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.
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;
Conference_Titel :
Microwave Conference, 2006. 36th European
Conference_Location :
Manchester
Print_ISBN :
2-9600551-6-0
DOI :
10.1109/EUMC.2006.281240
