Reducing the Peak to Average Power Ratio of Multicarrier Signals by Adaptive Subcarrier Selection

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Abstract:

A non-constant envelope is a fundamental problem of the multicarrier technique OFDM. In many cases, nonlinear power ampliﬁers with power saturation lead to high out-of-band radiation. Another characteristic of OFDM is the inﬂuence of frequency selective fading of mobile radio channels. To overcome this effect coding schemes are required for low error rates, therefore a certain redundancy has to be introduced. In this paper, there will be presented a combination of an adaptive subcarrier selection as coding scheme with a new algorithm to reduce the out-of-band radiation, exploiting the non-information carrying subcarriers. The efﬁciency of this technique will be demonstrated by simulation results.

Document type:

Conference Paper

Publication:

Florence, Italy, 5. - 9. October 1998

Conference:

IEEE International Conference on Universal Personal Communications (ICUPC 98)

Pages:

933-937

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