ETRI Journal

Electronics and Telecommunications Research Institute (한국전자통신연구원)
권호 표지
DOI QR코드

DOI QR Code

Clipping Distortion Suppression of Directly Modulated Multi-IF-over-Fiber Mobile Fronthaul Links Using Shunt Diode Predistorter

  • Han, Changyo (Hyper-connected Communication Research Laboratory, ETRI) ;
  • Cho, Seung-Hyun (Hyper-connected Communication Research Laboratory, ETRI) ;
  • Sung, Minkyu (Hyper-connected Communication Research Laboratory, ETRI) ;
  • Chung, Hwan Seok (Hyper-connected Communication Research Laboratory, ETRI) ;
  • Lee, Jong Hyun (Hyper-connected Communication Research Laboratory, ETRI)
  • Received : 2015.08.17
  • Accepted : 2016.03.02
  • Published : 2016.04.01
Download PDF
⟨ Previous Next ⟩

Abstract

Herein, we demonstrate clipping distortion suppression of directly modulated multi-IF-over-fiber links using a simple shunt diode predistorter. The dynamic range of a directly modulated analog fiber optic link is limited by nonlinear distortions caused by laser-diode clipping. We investigate the link performance in the context of carrie-to-noise and distortion ratio (CNDR) and error vector magnitude (EVM) requirements when supporting LTE-A services. We also design an analog predistorter with a shunt-diode structure, and demonstrate experimentally that the predistorter has the ability to suppress clipping-induced third-order intermodulation distortions of the link by at most 14 dB. It also improves the CNDR and EVM of the 4-IF-multiplexed LTE-A carriers by 7 dB and 2.9%, respectively.

Keywords

References

  1. C.-L. I et al., "Recent Progress on C-RAN Centralization and Cloudification," IEEE Access, vol. 2, Aug. 2014, pp. 1030-1039. https://doi.org/10.1109/ACCESS.2014.2351411
  2. Common Public Radio Interface (CPRI), CPRI Interface Specification V6.1, 2014.
  3. Open Base Station Architecture (OBSAI), OBSAI Syst. Specification V2.0, 2006.
  4. S.-H. Cho et al., "Cost-Effective Next Generation Mobile Fronthaul Architecture with Multi-IF Carrier Transmission Scheme," Opt. Fiber Commun. Conf., San Francisco, CA, USA, Mar. 2014, pp. Tu2B.6.
  5. M. Zhu et al., "High-Capacity Mobile Fronthaul Supporting LTE-Advanced Carrier Aggregation and $8{\times}8$ MIMO," Opt. Fiber Commun. Conf., Los Angeles, CA, USA, Mar. 2015, pp. M2J.3.
  6. D. Wake, A. Nkansah, and N.J. Gomes, "Radio over Fiber Link Design for Next Generation Wireless Systems," J. Lightw. Technol., vol. 28, no. 16, Mar. 2010, pp. 2456-2464 . https://doi.org/10.1109/JLT.2010.2045103
  7. S.-H. Cho et al., "Experimental Demonstrations of Next Generation Cost-Effective Mobile Fronthaul with IFoF Technique," Opt. Fiber Commun. Conf., Los Angeles, CA, USA, Mar. 2015, pp. M2J.5.
  8. X. Liu et al., "Demonstration of Bandwidth-Efficient Mobile Fronthaul Enabling Seamless Aggregation of 36 E-UTRA-Like Wireless Signals in a Single 1.1-GHz Wavelength Channel," Opt. Fiber Commun. Conf., Los Angeles, CA, USA, Mar. 2015, pp. M2J.2.
  9. A.A.M. Saleh, "Fundamental Limit on Number of Channels in Subcarrier-Multiplexed Lightwave CATV System," Electron. Lett., vol. 25, no. 12, June 1989, pp. 776-777. https://doi.org/10.1049/el:19890524
  10. P. Chiang and W.I. Way "Ultimate Capacity of a Laser Diode in Transporting Multichannel M-QAM Signals," J. Lightw. Technol., vol. 15, no. 10, Oct. 1997, pp. 1914-1924. https://doi.org/10.1109/50.633590
  11. B.H. Wang et al., "Large-Signal Spurious-Free Dynamic Range due to Static and Dynamic Clipping in Direct and External Modulation Systems," J. Lightw. Technol., vol. 16, no. 10, Oct. 1998, pp. 1773-1785. https://doi.org/10.1109/50.721064
  12. H. Kim and Y.C. Chung, "Passive Optical Network for CDMA-Based Microcellular Communication systems," J. Lightw. Technol., vol. 19, no. 3, Mar. 2001, pp. 301-311. https://doi.org/10.1109/50.918881
  13. R. Salmanzadeh and B.M. Tazehkand, "A Modified Method Based on the Discrete Sliding Norm Transform to Reduce the PAPR in OFDM Systems," ETRI J., vol. 36, no. 1, Feb. 2014, pp. 42-50. https://doi.org/10.4218/etrij.14.0113.0053
  14. L. Roselli et al., "Analog Laser Predistortion for Multiservice Radio-over-Fiber Systems," J. Lightw. Technol., vol. 21, no. 5, 2003, pp. 1211-1223. https://doi.org/10.1109/JLT.2003.810931
  15. T. Ismail et al., "High-Dynamic-Range Wireless-over-Fiber Link Using Feedforward Linearization," J. Lightw. Technol., vol. 25, no. 11, Nov. 2007, pp. 3274-3282. https://doi.org/10.1109/JLT.2007.906823
  16. Y. Pei et al., "Complexity-Reduced Digital Predistortion for Subcarrier Multiplexed Radio over Fiber Systems Transmitting Sparse Multi-Band RF Signals," Opt. Exp., vol. 21, no. 3, 2013, pp. 3708-3714. https://doi.org/10.1364/OE.21.003708
  17. C. Han et al., "Linearity Improvement of Directly-Modulated Multi-IF-over-Fiber LTE-A Mobile Fronthaul Link Using Shunt Diode Predistorter," European Conf. Opt. Commun., Valencia, Spain, Sept. 27-Oct. 1, 2015, pp.1-5
  18. 3GPP TS 36.104 v. 11.2.0, Base Station (BS) Radio Transmission and Reception, Tech. Spec. Group Radio Access Network, Rel. 11, Nov. 2012.
  19. R.A. Shafik, M.S. Rahman, and A.R. Islam, "On the Extended Relationships among EVM, BER, and SNR as Performance Metrics," Int. Conf. Elect. Comput. Eng., Dhaka, Bangladesh, Dec. 19-21, 2006, pp. 408-411.
  20. K. Yamauchi et al., "A Microwave Miniaturized Linearizer Using a Parallel Diode with a Bias Feed Resistance," IEEE Trans. Microw. Theory Technol., vol. 45, no. 12, Dec. 1997, pp. 2431-2435. https://doi.org/10.1109/22.643856
  21. B.H. Wang et al., "Large-Signal Spurious-Free Dynamic Range due to Static and Dynamic Clipping in Direct and External Modulation Systems," J. Lightw. Technol., vol. 16, no. 10, Oct. 1998, pp. 1773-1785. https://doi.org/10.1109/50.721064

Cited by

  1. 4 × 4 MIMO architecture supporting IFoF-based analog indoor distributed antenna system for 5G mobile communications vol.26, pp.22, 2018, https://doi.org/10.1364/oe.26.028216