A Novel Scheme of Improving 60 GHz Millimeter-Wave System Performance in the Presence of Nonlinear Power Amplifier

  • Shaojian Huang
  • Hongbo Tao
  • Sha Zhang
  • Xuebin Sun
  • Zheng Zhou
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 202)

Abstract

Two modulation schemes, namely Single-Carrier (SC), Orthogonal Frequency Division Multiplexing (OFDM), are widely recommended in the currently undergoing 60 GHz millimeter-wave standard draft IEEE 802.11ad. Low Density Parity Check (LDPC) code is also adopted in the sense of its much better performance in correcting errors comparing the other FEC codes. However, OFDM system is extremely vulnerable to the nonlinear distortion caused by the 60 GHz power amplifier (PA) nonlinear property as a consequence of its significant peak to average ratio (PAPR). In this article, we utilize a promising companding transform (CT) algorithm which is also combined with predistortion scheme, in order to combat the PA nonlinear distortion. Experimental results demonstrate our proposed scheme exhibits much better performance in resisting PA nonlinear distortion, and the new scheme is also easy to implement in practical design of 60 GHz millimeter-wave systems.

Keywords

OFDM Companding transform PA nonlinear predistortion LUT 

Notes

Acknowledgments

Supported by the National Natural Science Foundation of China (Grant No.60902046, 60972079) and the Important National Science & Technology Specific Projects of China (Grant No.2011ZX03005-002, 2012ZX03001022).

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Copyright information

© Springer Science+Business Media New York 2012

Authors and Affiliations

  • Shaojian Huang
    • 1
  • Hongbo Tao
    • 2
  • Sha Zhang
    • 2
  • Xuebin Sun
    • 1
  • Zheng Zhou
    • 1
  1. 1.Key Laboratory of Universal Wireless CommunicationMinistry of Education, Beijing University of Posts and TelecommunicationsBeijingPeople’s Republic of China
  2. 2.The State Radio Monitoring Center Testing CenterBeijingPeople’s Republic of China

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