Title :
A Companding Technique for PAPR Reduction of OFDM Systems
Author :
Hao, Miin-Jong ; Liaw, Chung-Ping
Author_Institution :
Dept. of Comput. & Commun. Eng., Nat. Kaohsiung First Univ. of Sci. & Technol.
Abstract :
A companding technique using the hyperbolic tangent transform is proposed for reducing the peak-to-average-power ratio (PAPR) of orthogonal frequency division multiplexing (OFDM) signals. This technique is practical and can be implemented easily in analog integrated circuit design. The PAPR value of an OFDM system and the optimal companding coefficient to attain the minimum quantization error are derived. Error probability performance of the system after the companding is evaluated, which then is compared to the systems with the mu-law and A-law companding techniques.
Keywords :
OFDM modulation; error statistics; radio networks; transforms; A-law companding techniques; OFDM systems; PAPR reduction; analog integrated circuit design; error probability; hyperbolic tangent transform; mu-law companding techniques; orthogonal frequency division multiplexing signals; peak-to-average-power ratio reduction; quantization error; DSL; Digital video broadcasting; Distortion; OFDM; Peak to average power ratio; Quantization; Radiofrequency interference; Satellite broadcasting; TV broadcasting; TV interference;
Conference_Titel :
Intelligent Signal Processing and Communications, 2006. ISPACS '06. International Symposium on
Conference_Location :
Yonago
Print_ISBN :
0-7803-9732-0
Electronic_ISBN :
0-7803-9733-9
DOI :
10.1109/ISPACS.2006.364736
