JOURNAL OF CHINA UNIVERSITIES OF POSTS AND TELECOM ›› 2018, Vol. 25 ›› Issue (2): 10-22.doi: 10. 19682/ j. cnki. 1005-8885. 2018. 1002

• Wireless • Previous Articles     Next Articles

Segmentation multi-dimensional crest factor reduction for multi-service supporting digital radio over fibre system

Wang Jie, Tao Xiuli, Hu Xiaoguang, Guan Enyi, Ding Zhushun, Li Wen   

  1. 1. School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, China
    2. Communication Technology Research Division, Beijing Institute of Aerospace Control Devices, Beijing 100039, China
    3. Fifth Technology Department, Beijing Aerospace Times Optical-Electronic Technology Company Limited, Beijing 100039, China
  • Received:2017-11-13 Revised:2018-03-24 Online:2018-04-30 Published:2018-07-02
  • Contact: Wang Jie, E-mail: wangjack2006@126. com E-mail:wangjack2006@126.com
  • About author:Wang Jie, E-mail: wangjack2006@126. com
  • Supported by:
    This work was supported by the projects of ‘Smart in-building Wireless System using Flexible Digital Transmission Technology (SWIFT) ‘ and ‘ Research on in-building Signal Coverage System of Mobile IOT Based on Cloud ‘. We would like to extend the sincere gratitude to all members of these projects.

Abstract: A segmentation multi-dimensional crest factor reduction (SMD-CFR) algorithm is proposed for multi-service supporting digital radio over fibre (DRoF) system. Benefit from segmentation dynamic clipping threshold and clipping factor got basing on characteristics of all service bands, the SMD-CFR is able to get better peak clipping and peak to average power ratio (PAPR) reduction for multi-band combined signal. Simulation results show that SMD-CFR gets more than 2.3 reduction in PAPR for two-bands combined signal of long term evolution (LTE), which is much better than traditional one dimensional (1D)-CFR. Meanwhile, for 64-quadrature amplitude modulation (QAM) modulation and demodulation link, it has very small effect on bit error rate (BER) and error
vector magnitude (EVM), which are controlled less than 0.1% and 0.2% respectively. For hardware experiment, SMD-CFR obtains 4.5% increase in drain efficiency and about 4 dBc increase in adjacent channel leakage ratio (ACLR). These are very significant for the wide band power amplifier (PA) in multi-service supporting DRoF system.

Key words: CFR, multi-dimensional, dynamic crest factor, DRoF, multi-service supporting, LTE

CLC Number: