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Improvement of SEFDM spectral and energy efficiency by replacing spectral sinc-pulse by RRC-pulses

Keywords:

A.L. Gelgor – Ph. D. (Eng.), Associate Professor, Department «Radio Engineering and Telecommunication Systems», Peter The Great St.Petersburg Polytechnic University E-mail: a_gelgor@mail.ru A.I. Gorlov – Assistant, Department «Radio Engineering and Telecommunication Systems», Peter The Great St.Petersburg Polytechnic University E-mail: anton.gorlov@yandex.ru Nguyen Van Phe – Post-graduate Student, Department « Radio Engineering and Telecommunication Systems», Peter The Great St.Petersburg Polytechnic University E-mail: nvphe1905@gmail.com


In this paper we propose a modification of spectrally efficient frequency division multiplexing (SEFDM) technique to reduce its energy consumptions. In the proposed technique (called RRC-SEFDM) infinite RRC-pulses are utilized as subcarriers’ spectrums. We have also suggested algorithms for SEFDM generation and detection in frequency domain. In our approach, we treat spectrum samples as time-domain samples, and entire SEFDM spectrum as a time-domain faster-than-Nyquist signal. The approach allows a signal detection by the Viterbi algorithm. A transition from sinc to RRC subcarriers’ spectrums leads to increase of SEFDM symbol duration in time domain. By simulation, it was shown that the bandwidth and energy consumptions of RRC-SEFDM is significantly lower than the consumptions of sinc-SEFDM. Also, the RRC-SEFDM outperform sinc-SEFDM in energy efficiency if the PAPR value is taken into account.
References:

 

  1. Isam˙S., Darwazeh˙I. Simple DSP-IDFT techniques for generating spectrally efficient FDM signals // IEEE IET Int. Symp. Commun. Syst., Netw., Digital Signal Process. 2010. P. 20−24.
  2. Isam˙S., Kanaras˙I., Darwazeh˙I. A truncated SVD approach for fixed complexity spectrally efficient FDM receivers // Proc. IEEE Wireless Commun. Netw. Conf. 2011. P. 1584−1589.
  3. Isam˙S., Darwazeh˙I. Design and performance assessment of fixed complexity spectrally efficient FDM receivers // Proc. IEEE 73rd Veh. Technol. Conf. 2011. P. 1−5.
  4. Xu T., Darwazeh˙I. Spectrally efficient FDM: Spectrum saving technique for 5G? // 1st Int. Conf on 5G for Ubiquitous Connectivity (5GU). 2014. P. 273−278.
  5. Xu T., Grammenos˙R.C., Darwazeh˙I. FPGA implementations of real-time detectors for a spectrally efficient FDM system // 20th Int. Conf. on Telecommunications (ICT). 2013 . P. 1−5.
  6. Xu T., Darwazeh˙I. Bandwidth Compressed Carrier Aggregation // IEEE Int. Conf. on Communication Workshop (ICCW). 2015. P. 1107−1112.
  7. Huang˙J., Sui˙Q., Li Z., Ji F. Experimental Demonstration of 16-QAM DD-SEFDM With Cascaded BPSK Iterative Detection // IEEE Photonics Journal. June 2016. V. 8. № 3.
  8. Mazo˙J.E. Faster-than-Nyquist signaling // Bell System Technical Journal. 1975. V. 54. № 8. P. 1451−1462.
  9. Liveris˙A.D., Georghiades˙C.N. Exploiting faster-than-Nyquist signaling // IEEE Trans. Comm. 2003. V. 51. № 9. P. 1502−1511.
  10. Gorlov A., Gelgor A., Van Phe Nguyen. Root-Raised Cosine versus Optimal Finite Pulses for Faster-than-Nyquist Generation // Internet of Things, Smart Spaces and Next Generation Networks and Systems. Springer International Publishing, 2016. P. 628−640.
  11. Gelgor A., Gorlov A., Popov E. Multicomponent signals for bandwidth-efficient single-carrier modulation // IEEE Black Sea Conference on Communications and Networking (BlackSeaCom). 2015. P. 19−23.
  12. Gelgor A., Gorlov A., Popov E. On the synthesis of optimal finite pulses for bandwidth and energy efficient single-carrier modulation // Internet of Things, Smart Spaces and Next Generation Networks and Systems. Springer International Publishing. 2015. P. 655−668.
  13. Gelgor A.L., Gorlov A.I., Popov E.A. Preodolenie «barera» Najjkvista pri ispolzovanii odnochatsotnykh neortogonalnykh mnogokomponentnykh signalov // Radiotekhnika. 2015. № 1. S. 32−48.

 

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