Analysis of alternative metrics for the PAPR problem in OFDM transmission

The effective PAPR of the transmit signal is the standard metric to capture the effect of nonlinear distortion in OFDM transmission. A common rule of thumb is the log(N) barrier where N is the number of subcarriers which has been theoretically analyzed by many authors. Recently, new alternative metrics have been proposed in practice leading potentially to different system design rules which are theoretically analyzed in this paper. One of the main findings is that, most surprisingly, the log(N) barrier turns out to be much too conservative: e.g. for the so-called amplifier-oriented metric the scaling is rather log [log (N)]. To prove this result, new upper bounds on the PAPR distribution for coded systems are presented as well as a theorem relating PAPR results to these alternative metrics.

[1]  Hideki Ochiai,et al.  On the distribution of the peak-to-average power ratio in OFDM signals , 2001, IEEE Trans. Commun..

[2]  Dov Wulich,et al.  Peak-to-average power ratio in high-order OFDM , 2001, IEEE Trans. Commun..

[3]  Simon Litsyn.  Peak power control in multicarrier communications , 2007 .

[4]  Holger Boche,et al.  Signal representation and approximation-fundamental limits , 2007, Eur. Trans. Telecommun..

[5]  Robert F. H. Fischer,et al.  Reed–Solomon and Simplex Codes for Peak-to-Average Power Ratio Reduction in OFDM , 2009, IEEE Transactions on Information Theory.

[6]  Kenneth G. Paterson,et al.  On the existence and construction of good codes with low peak-to-average power ratios , 2000, IEEE Trans. Inf. Theory.

[7]  Holger Boche,et al.  Upper bounds on the statistical distribution of the crest-factor in OFDM transmission , 2003, IEEE Trans. Inf. Theory.

[8]  K. Paterson,et al.  On the existence and construction of good codes with low peak-to-average power ratios , 2000, 2000 IEEE International Symposium on Information Theory (Cat. No.00CH37060).

[9]  Liesbet Van der Perre,et al.  Challenges and enabling technologies for energy aware mobile radio networks , 2010, IEEE Communications Magazine.

[10]  Gerhard Wunder,et al.  Generalized bounds on the crest-factor distribution of OFDM signals with applications to code design , 2004, IEEE Transactions on Information Theory.

[11]  Hamid Jafarkhani,et al.  On the computation and reduction of the peak-to-average power ratio in multicarrier communications , 2000, IEEE Trans. Commun..