Comb type pilot aided channel estimation in space time block coded OFDM systems

The channel estimation problem in OFDM systems with transmit diversity is concerned. The estimation is based on comb type pilots in frequency domain, which can provide higher bandwidth efficiency than the training block pilots. Three different estimation schemes based on such comb type pilots are discussed in this paper: one scheme is performed in frequency domain and the other two are performed in time domain. Computational simulation shows that these estimation schemes have the appropriate performance while the time domain methods have relatively simple structure.

[1]  Wenjun Zhang,et al.  A channel estimation method based on frequency-domain pilots and time-domain processing for OFDM systems , 2004, IEEE Trans. Consumer Electron..

[2]  V. Bhargava,et al.  An investigation into time-domain approach for OFDM channel estimation , 2000, IEEE Trans. Broadcast..

[3]  Siavash M. Alamouti,et al.  A simple transmit diversity technique for wireless communications , 1998, IEEE J. Sel. Areas Commun..

[4]  Geoffrey Ye Li,et al.  Simplified channel estimation for OFDM systems with multiple transmit antennas , 2002, IEEE Trans. Wirel. Commun..

[5]  C. W. Farrow,et al.  A continuously variable digital delay element , 1988, 1988., IEEE International Symposium on Circuits and Systems.

[6]  Lars Erup,et al.  Interpolation in digital modems. II. Implementation and performance , 1993, IEEE Trans. Commun..

[7]  Xianbin Wang,et al.  A channel characterization technique using frequency domain pilot time domain correlation method for DVB-T systems , 2003, IEEE Trans. Consumer Electron..

[8]  Yinyi Lin,et al.  Channel estimation using pilot tones in OFDM systems , 1999 .

[9]  David C. Chu,et al.  Polyphase codes with good periodic correlation properties (Corresp.) , 1972, IEEE Trans. Inf. Theory.

[10]  Yong Soo Cho,et al.  An efficient channel estimation technique for OFDM systems with transmitter diversity , 2000, 11th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2000. Proceedings (Cat. No.00TH8525).

[11]  Sinem Coleri Ergen,et al.  Channel estimation techniques based on pilot arrangement in OFDM systems , 2002, IEEE Trans. Broadcast..

[12]  Robert L. Frank,et al.  Polyphase codes with good nonperiodic correlation properties , 1963, IEEE Trans. Inf. Theory.

[13]  Sirikiat Lek Ariyavisitakul,et al.  Channel estimation for OFDM systems with transmitter diversity in mobile wireless channels , 1999, IEEE J. Sel. Areas Commun..

[14]  Erup.  Interpolation in Digital Modems-Part 11 : Implementation and Performance , 2000 .