Estimation of the Angle Parameter in FRFT Domain for FRFT-OFDM Systems

Li Feng; Zhu  Shi-Hua; Rong  Mei

doi:10.3724/SP.J.1146.2007.00554

Volume 30 Issue 10

Jan. 2011

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Article Navigation > Journal of Electronics & Information Technology > 2008 > 30(10): 2427-2430

Li Feng, Zhu Shi-Hua, Rong Mei. Estimation of the Angle Parameter in FRFT Domain for FRFT-OFDM Systems[J]. Journal of Electronics & Information Technology, 2008, 30(10): 2427-2430. doi: 10.3724/SP.J.1146.2007.00554

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Li Feng, Zhu Shi-Hua, Rong Mei. Estimation of the Angle Parameter in FRFT Domain for FRFT-OFDM Systems[J]. Journal of Electronics & Information Technology, 2008, 30(10): 2427-2430. doi: 10.3724/SP.J.1146.2007.00554

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Estimation of the Angle Parameter in FRFT Domain for FRFT-OFDM Systems

doi: 10.3724/SP.J.1146.2007.00554

Received Date: 2007-04-10
Rev Recd Date: 2007-04-10
Publish Date: 2008-10-19

Abstract

Abstract

A new method of calculating the angle parameter in FRFT domain based on the eigenfunction of time-varying channel is proposed in this letter for FRFT-OFDM systems. The new scheme can estimate the angle parameter in real time based on the variation of the wireless channel. The relationship between the time-variant frequency of G-eigenfunction and time is approximated by linear function. Both theoretical analysis and computer simulation demonstrate that the new scheme has a low complexity compared with the traditional method. When the number of subcarriers is 128, the new scheme can reduce the complexity by 104 compared with the traditional method. This new scheme has advantage when the Doppler spread is large or the time variation of the channel is fast.
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References

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