A New Method for SLM-Based OFDM Systems without Side Information

One of the most well-known techniques to reduce the problem of PAPR in orthogonal frequency division multiplexing (OFDM) systems is selected mapping (SLM). The chief drawback of this method is transmission of several additional bits, side information (SI), for each data block. Such side information causes bandwidth efficiency to be decreased; in addition, incorrect detection of SI in the receiver side make whole data block be lost. In this paper, we propose a technique by which side information bits are not explicitly sent. We exhibit the example of our method for an OFDM system by using 16-QAM modulation. It is shown that our proposed scheme, from the view point of bit error rate, probability of detection failure and PAPR reduction, performs very well.