Title :
PAPR reduction of OFDM signals using multiamplitude CPM
Author :
Tasadduq, I.A. ; Rao, R.K.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Western Ontario, London, Ont., Canada
fDate :
8/1/2002 12:00:00 AM
Abstract :
A major drawback with an orthogonal frequency division multiplexing (OFDM) system is its high peak-to-average-power ratio (PAPR). Here, the use of multiamplitude continuous phase modulation (CPM) signals for reducing PAPR is proposed and investigated. In this method, two signal points represent the same information and the one that minimises PAPR is chosen. The concept of partial transmit sequences (PTS) is used to select the best signal points. It is shown through simulations that the proposed scheme reduces the PAPR of 128-carrier OFDM-CPM signals by >4 dB
Keywords :
OFDM modulation; continuous phase modulation; digital simulation; sequences; OFDM signals; OFDM system; OFDM-CPM signals; PAPR reduction; PSK signals; QAM signals; continuous phase modulation signals; multiamplitude CPM signals; orthogonal frequency division multiplexing; partial transmit sequences; peak-to-average-power ratio; signal points; simulations; wireless multimedia communication;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20020613
