Publica
Hier finden Sie wissenschaftliche Publikationen aus den FraunhoferInstituten. An adaptive PAPR reduction scheme for OFDM using SLM with clipping at the transmitter, and sparse reconstruction at the receiver
 Institute of Electrical and Electronics Engineers IEEE; IEEE Signal Processing Society: IEEE China Summit & International Conference on Signal and Information Processing, ChinaSIP 2014 : Xian, China, 9  13 July 2014; Proceedings Piscataway, NJ: IEEE, 2014 ISBN: 9781479954018 ISBN: 9781479954049 ISBN: 9781479954032 S.678682 
 China Summit & International Conference on Signal and Information Processing (ChinaSIP) <2, 2014, Xian> 

 Englisch 
 Konferenzbeitrag 
 Fraunhofer IIS () 
Abstract
This paper presents a technique to reduce the peaktoaverage power ratio (PAPR) in orthogonal frequencydivision multiplexing (OFDM) systems. The presented scheme combines two wellknown techniques, namely selected mapping (SLM) and clipping, in an adaptive way. Allowing an affordable PAPR, which might be exceeded with very small probability, the proposed method aims at minimizing the instantaneous number of clipped peaks per OFDM frame to limit the resulting transmit signal distortion. Using Compressed Sensing based algorithms which account for the potential variation of the number of clips per frame, this clipping strategy directly translates into an improved receiverside peak reconstruction compared to choosing a fixed number of clipped peaks. It is shown that in this way a receiverside bit error probability reduction is achieved while guaranteeing the same maximum PAPR at the transmitter.