TY - JFULL
AU - Ibrahim M. Hussain
PY - 2010/2/
TI - Power Efficient OFDM Signals with Reduced Symbol's Aperiodic Autocorrelation
T2 - International Journal of Electronics and Communication Engineering
SP - 19
EP - 25
VL - 4
SN - 1307-6892
UR - https://publications.waset.org/pdf/5944
PU - World Academy of Science, Engineering and Technology
NX - Open Science Index 37, 2010
N2 - Three new algorithms based on minimization of autocorrelation of transmitted symbols and the SLM approach which are computationally less demanding have been proposed. In the first algorithm, autocorrelation of complex data sequence is minimized to a value of 1 that results in reduction of PAPR. Second algorithm generates multiple random sequences from the sequence generated in the first algorithm with same value of autocorrelation i.e. 1. Out of these, the sequence with minimum PAPR is transmitted. Third algorithm is an extension of the second algorithm and requires minimum side information to be transmitted. Multiple sequences are generated by modifying a fixed number of complex numbers in an OFDM data sequence using only one factor. The multiple sequences represent the same data sequence and the one giving minimum PAPR is transmitted. Simulation results for a 256 subcarrier OFDM system show that significant reduction in PAPR is achieved using the proposed algorithms.
ER -