Journal of Shanghai Jiaotong University ›› 2017, Vol. 51 ›› Issue (9): 1117-1123.doi: 10.16183/j.cnki.jsjtu.2017.09.015

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 Research on Interference Suppression in
 Generalized Frequency Division Multiplex System

 WU Hong,LIU Bing,ZHAO Yingxin,WANG Chong,ZHANG Yuting TANG Ran,MA Xiaoxu,XU Xiyan,MU Weiwei,LIU Zhiyang   

  1.  College of Electronic and Optical Engineering, Nankai University, Tianjin 300350, China; Tianjin
     Key Laboratory of Optoelectronic Sensor and Sensing Network Technology, Tianjin 300350, China
  • Online:2017-09-20 Published:2017-09-20
  • Supported by:

Abstract:  The disturbances such as: ICI(Inter Carrier Interference), OOBE(Out of Band Emission), etc. in GFDM(Generalized Frequency Division Multiplex) multicarrier modulation communication system may degrade system performance, and timefrequency dualselective fading will worsen this issue. A channel estimation algorithm is introduced to lower the system’s interferences and computational complexity, by optimizing the prototype filter parameters according to disturb signal energy. Precode and equilibrium are also chosen to suppress ICI, OOBE, and interference from other users or antennas. A simulation model by Matlab is set up, BER curves and constellation diagrams have been worked out to evaluate the system performances. The simulation result indicates that GFDM with those corrective actions may get a lower BER level.

Key words:  generalized frequency division multiplex (GFDM), inter carrier interference (ICI), out of band emission (OOBE), computational complexity

CLC Number: