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Optimum weighting-coefficient-pair in inter-carrier interference self-cancellation scheme of OFDM system

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Abstract

As one of the most important components of the wideband wireless access technique, orthogonal frequency division multiplexing (OFDM) has a high usage rate of spectrum and combats inter-symbol interference (ISI) in multi-path fading channel. However, when there are frequency offsets during the signal transmission, the inter-carrier interference (ICI) is introduced, which significantly degrades the performance. The existing ICI self-cancellation schemes such as PCC-OFDM are not optimum to minimize the interference considering both noise and ICI. In this paper, a new metric named SINR (signal-to-interference-and-noise ratio) is proposed. We discuss the optimization issue when a constant frequency offset exists and in time-varying channels. The optimum weighting-coefficient-pair (OWCP) is obtained, which maximizes SINR theoretically through the alternant iteration algorithm. Simulations show that the performance of OWCP-OFDM is better than that of PCC-OFDM, especially when the frequency offset is large. Although the ICI self-cancellation scheme suffers bandwidth inefficiency, from the simulation results we can also see that the performance of OWCP-OFDM is much better than that of the standard OFDM systems with the same bandwidth efficiency when a frequency offset exists. Moreover, since the redundant modulation provides the capability to suppress ICI as well as a receiving SNR gain, it can be considered as exchanging the bandwidth for SNR.

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References

  • Ahn, J., Lee, H.S., 1993. Frequency domain equalization of OFDM signal over frequency nonselective Rayleigh fading channels. Electron. Lett., 29(16):1476–1477. [doi:10.1049/el:19930986]

    Article  Google Scholar 

  • Al-Dhahir, N., 1996. Optimum finite-length equalization for multicarrier transceivers. IEEE Trans. on Commun., 44(1):56–64. [doi:10.1109/26.476097]

    Article  Google Scholar 

  • Armstrong, J., 1999. Analysis of new and existing methods of reducing intercarrier interference due to carrier frequency offset in OFDM. IEEE Trans. on Commun., 47(3):365–369. [doi:10.1109/26.752816]

    Article  MathSciNet  Google Scholar 

  • Cimini, L.Jr., 1985. Analysis and simulation of a digital mobile channel using orthogonal frequency-division multiplexing. IEEE Trans. on Commun., 33(7):665–765. [doi:10.1109/TCOM.1985.1096357]

    Article  Google Scholar 

  • Li, R., Stette, G., 1995. Time-limited orthogonal multicarrier modulation schemes. IEEE Trans. on Commun., 43(234):1269–1272. [doi:10.1109/26.380167]

    Google Scholar 

  • Li, Y., Cimini, L.J.Jr., 2001. Bounds on the interchannel interference of OFDM in time-varying impairments. IEEE Trans. on Commun., 49(3):401–404. [doi:10.1109/26. 911445]

    Article  MATH  Google Scholar 

  • Muschallik, C., 1996. Improving an OFDM reception using an adaptive Nyquist windowing. IEEE Trans. on Consum. Electron., 42(3):259–269. [doi:10.1109/30.536046]

    Article  Google Scholar 

  • Robertson, P., Kaiser, S., 1999a. Analysis of the Loss of Orthogonality Through Doppler Spread in OFDM Systems. Proc. GLOBECOM, 1b:701–706. [doi:10.1109/GLOCOM.1999.830152]

    Google Scholar 

  • Robertson, P., Kaiser, S., 1999b. The Effects of Doppler Spreads in OFDM(A) Mobile Radio Systems. Proc. VTC, 1:329–333. [doi:10.1109/VETECF.1999.797150]

    Google Scholar 

  • Russell, M., Stuber, G.L., 1995. Interchannel Interference Analysis of OFDM in a Mobile Environment. Proc. VTC, 2:820–824. [doi:10.1109/VETEC.1995.504982]

    Google Scholar 

  • Zhao, Y.P., Haggman, S.G., 2001. Intercarrier interference self-cancellation scheme for OFDM mobile communication systems. IEEE Trans. on Commun., 49(7):1185–1191. [doi:10.1109/26.935159]

    Article  MATH  Google Scholar 

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Authors and Affiliations

  1. Department of Information Science and Electronic Engineering, Zhejiang University, Hangzhou, 310027, China

    Min-jian Zhao, Di Zhang & Bin Cai

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  1. Min-jian Zhao
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  2. Di Zhang
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  3. Bin Cai
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Correspondence to Min-jian Zhao.

Additional information

Project (No. 2006AA01Z273) supported by the Hi-Tech Research and Development Program (863) of China

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Zhao, Mj., Zhang, D. & Cai, B. Optimum weighting-coefficient-pair in inter-carrier interference self-cancellation scheme of OFDM system. J. Zhejiang Univ. Sci. A 9, 1676–1684 (2008). https://doi.org/10.1631/jzus.A0820086

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  • DOI: https://doi.org/10.1631/jzus.A0820086

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