A Novel Technique for PAR Reduction in DRM

Abstract:

PAR (Peak-to-Average Power Ratio) is one of significant issues in a DRM transmitter. To reduce the PAR of DRM signals, an iterative pre-distortion technique is proposed in this paper. This technique improves the RMS (Root Mean Square) power of transmitter while the effect on DRM signal quality is negligible. Research has been done on the impact that the processing parameters caused to DRM signal quality. Simulation and test indicate that in the case that the quality requirements for the RF signal in the DRM specification is satisfied, DRM output power is increased to 9kw from 5kw (RMS power) based on a 10kw (carrier power) DX transmitter, thereby improving the capability of the transmitter greatly.

• Periodical: Advanced Materials Research (Volumes 546-547)
• Pages: 1329-1333
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.546-547.1329
• Online since: July 2012
• Authors: Wei Zhang Xu, Zhan Xin Yang, Xin Le Yu
• Keywords: DRM, FFT, Iterative Cascade, PAR

References

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DOI: 10.1109/11.796272

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