Title :
Selected mapping with implicit transmission of side information using discrete phase rotations
Author :
Siegl, Christian ; Fischer, Robert F R
Author_Institution :
Lehrstuhl fur Informationsubertragung, Friedrich-Alexander-Univ. Erlangen-Nurnberg, Erlangen, Germany
Abstract :
Selected mapping is a popular scheme for reducing the peak-to-average power ratio in orthogonal frequency-division multiplexing (OFDM) systems. However, when using this scheme, the transmission of side information is necessary. In this paper, we introduce a novel approach to transmit the side information by embedding it into the OFDM frame. By rotating the QAM constellation in selected carriers by ¿/4, new degrees of freedom are created. No rate loss and no increase in transmit power is introduced by this approach. Numerical results cover the very good error performance of this scheme, which is almost equal to perfect transmission of the side information.
Keywords :
OFDM modulation; error analysis; quadrature amplitude modulation; OFDM systems; QAM constellation; degrees of freedom; discrete phase rotations; error performance; numerical analysis; orthogonal frequency-division multiplexing; peak-to-average power ratio; selected mapping; side information transmission; AWGN; Additive noise; Discrete transforms; Frequency division multiplexing; OFDM; Peak to average power ratio; Power system modeling; Propagation losses; Quadrature amplitude modulation; Time domain analysis;
Conference_Titel :
Source and Channel Coding (SCC), 2010 International ITG Conference on
Conference_Location :
Siegen
Print_ISBN :
978-1-4244-6872-0
Electronic_ISBN :
978-3-8007-3211-1
