Title :
Combined discrete cosine transform and two-piecewise companding transform for PAPR reduction in OFDM signals
Author :
Thititummajariya, Wisan ; Chayratsami, P.
Author_Institution :
Dept. of Eng. Educ., King Mongkut Inst. of Technol., Ladkrabang, Thailand
Abstract :
The high peak-to-average power ratio (PAPR) is one major drawback of orthogonal frequency division multiplexing (OFDM) systems. In this paper, a new companding technique is proposed by using the combination of the discrete cosine transform (DCT) and two-piecewise companding (TPWC) transform. Computer simulation results show that the proposed scheme offers better PAPR reduction and also improve bit error rate (BER) and power spectrum density (PSD) performances compared with the ordinary companding method.
Keywords :
OFDM modulation; discrete cosine transforms; error statistics; telecommunication power management; BER; DCT; OFDM signals; PAPR reduction; PSD; TPWC transform; bit error rate; companding technique; computer simulation; discrete cosine transform; orthogonal frequency division multiplexing signals; peak-to-average power ratio; power spectrum density; two-piecewise companding transform; Bit error rate; Conferences; Discrete cosine transforms; Modulation; Peak to average power ratio; Companding; DCT; OFDM; PAPR; TPWC;
Conference_Titel :
Communications (MICC), 2013 IEEE Malaysia International Conference on
Conference_Location :
Kuala Lumpur
DOI :
10.1109/MICC.2013.6805846
