Design and Performance Evaluation of CPP-OFDM (Cyclic Prefix and Postfix) System for Spectral Efficiency Improvement 


Vol. 42,  No. 12, pp. 2255-2262, Dec.  2017
10.7840/kics.2017.42.12.2255


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  Abstract

In this paper, we propose a CPP(Cyclic Prefix and Postfix)-OFDM(Orthogonal Frequency Division Multiplexing) system which can solve a high OOB(Out-of-Band) power problem of conventional CP(Cyclic Prefix)-OFDM system. The proposed CPP-OFDM system can effectively reduce OOB power by using windowing technique without wasting of additional time resources. As simulation results, the proposed CPP-OFDM system has OOB power of –78dB, -88dB, -100dB, and -110dB when window length of the system is 16, 32, 64, and 128 respectively. Additionally, the proposed CPP-OFDM system can effectively suppress ISI effect by using DFT(Discrete Fourier Transform) window sliding technique over multipath environment. That is, the proposed system can secure effective BER(Bit Error Rate) performance over multipath environment. That is, this proposed CPP-OFDM system does not only keeps the all advantages of the conventional CP-OFDM but also improve the spectrum efficiency by sharpening the OOB spectrum.

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  Cite this article

[IEEE Style]

C. An and H. Ryu, "Design and Performance Evaluation of CPP-OFDM (Cyclic Prefix and Postfix) System for Spectral Efficiency Improvement," The Journal of Korean Institute of Communications and Information Sciences, vol. 42, no. 12, pp. 2255-2262, 2017. DOI: 10.7840/kics.2017.42.12.2255.

[ACM Style]

Changyoung An and Heung-Gyoon Ryu. 2017. Design and Performance Evaluation of CPP-OFDM (Cyclic Prefix and Postfix) System for Spectral Efficiency Improvement. The Journal of Korean Institute of Communications and Information Sciences, 42, 12, (2017), 2255-2262. DOI: 10.7840/kics.2017.42.12.2255.

[KICS Style]

Changyoung An and Heung-Gyoon Ryu, "Design and Performance Evaluation of CPP-OFDM (Cyclic Prefix and Postfix) System for Spectral Efficiency Improvement," The Journal of Korean Institute of Communications and Information Sciences, vol. 42, no. 12, pp. 2255-2262, 12. 2017. (https://doi.org/10.7840/kics.2017.42.12.2255)

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pISSN : 1226 - 4717
eISSN : 2287 - 3880