Analysis of non-linear distortion effect based on Saleh model in GFDM system

Generalized Frequency Division Multiplexing (GFDM) is a flexible multi-carrier transmission to overcome the disadvantages of OFDM. The weakness of GFDM, similarly to the other multicarrier signals, is a high PAPR, large PAPR signals can easily saturate the transmit power amplifier and cause degradation in Symbol Error Rate (SER) performance and Out-of-Band (OOB) emissions. In this paper, we analyze the effects of Non-Linear distortion using the Saleh model in GFDM. We investigate three parameters: CCDF of PAPR, frequency spectrum, and SER. The simulation results show that GFDM superior to OFDM in PAPR performance and spectrum if given the non-linear distortion. But non-linear distortion in GFDM cause SER performance is decreasing significantly while GFDM is less affected by linearity than OFDM.

[1]  Velio Tralli,et al.  Performance evaluation of GFDM over nonlinear channel , 2016, 2016 International Conference on Information and Communication Technology Convergence (ICTC).

[2]  Arun Gangwar,et al.  An Overview: Peak to Average Power Ratio in OFDM system & its Effect , 2012 .

[3]  Gerhard Fettweis,et al.  Influence of pulse shaping on bit error rate performance and out of band radiation of Generalized Frequency Division Multiplexing , 2014, 2014 IEEE International Conference on Communications Workshops (ICC).

[4]  Nasrullah Armi,et al.  PTS-based PAPR reduction in fixed WiMAX system with Grouping Phase Weighting (GPW) , 2015, 2015 9th International Conference on Telecommunication Systems Services and Applications (TSSA).

[5]  Ivan Simões Gaspar,et al.  Waveform Advancements and Synchronization Techniques for Generalized Frequency Division Multiplexing , 2016 .

[6]  Chung G. Kang,et al.  MIMO-OFDM Wireless Communications with MATLAB , 2010 .

[7]  Gerhard Fettweis,et al.  FBMC and GFDM Interference Cancellation Schemes for Flexible Digital Radio PHY Design , 2011, 2011 14th Euromicro Conference on Digital System Design.

[8]  Gerhard Fettweis,et al.  Generalized Frequency Division Multiplexing: A Flexible Multi-Carrier Modulation Scheme for 5th Generation Cellular Networks , 2012 .

[9]  Anshul Halwa,et al.  Comparison of Peak to Average Power Reduction Techniques in OFDM , 2016 .

[10]  Gerhard Fettweis,et al.  Widely Linear Estimation for Space-Time-Coded GFDM in Low-Latency Applications , 2015, IEEE Transactions on Communications.