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Volume 29 Issue 1
Jan.  2011
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Gu Bo, Liu Ju, Xu Hong-ji. Blind Detection of Beam Space-Time Block Coding Based on ICA Scheme[J]. Journal of Electronics & Information Technology, 2007, 29(1): 105-108. doi: 10.3724/SP.J.1146.2005.00558
Citation: Gu Bo, Liu Ju, Xu Hong-ji. Blind Detection of Beam Space-Time Block Coding Based on ICA Scheme[J]. Journal of Electronics & Information Technology, 2007, 29(1): 105-108. doi: 10.3724/SP.J.1146.2005.00558

Blind Detection of Beam Space-Time Block Coding Based on ICA Scheme

doi: 10.3724/SP.J.1146.2005.00558
  • Received Date: 2005-05-17
  • Rev Recd Date: 2005-11-07
  • Publish Date: 2007-01-19
  • Theoretical investigations have proven that the system combining beamforming with space-time block coding can improve the performance efficiently, compared to the conventional single beamforming or space-time block coding only schemes. The conventional decoding schemes, which need accurate Channel State Information (CSI), are usually based on channel estimation. When the CSI is hard to achieve in some cases, the system performance would be affected heavily. Independent component analysis (ICA), one classical blind signal separation technique, can be used to detect the transmitted signals without channel estimation. Aiming at signals structure at the receiver, this paper proposed an orthogonal detecting scheme based on ICA. Simulations were carried out to compare the performance of the new scheme with conventional schemes. Simulation results for Rayleigh fading channels demonstrated that the new scheme could enhance the flexibility of the communication system and achieve better Bit Error Rate (BER) performance.
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  • [1] Alamouti S M. A simple transmit diversity technique, for wireless communications [J].IEEE Journal on Selec. Areas in Comm.1998, 16(8):1451-1458 [2] Friedlander B and Scherzer S. Beamforming versus transmit diversity in the downlink of a cellular communications system [J].IEEE Trans. on Vehicular Technology.2004, 53(4):1023- [3] Lei Z, Chin F P S, and Liang Y C. Combined beamforming with space-time block coding for wireless downlink transmission [J]. Proc. Vehicular Technology Con, VTC 2002-Fall, Vancouver, BC, Canada, 2002, Vol. 4: 24-28. [4] Stoica P and Ganesan G. Space-time block codes: Trained, blind and semi-blind detection [J]. in Proc. of IEEE ICASSP2002, 2002: 1609-1612. [5] Xu H J, Liu J, and Hu H B. Blind detection based space-time block coding with antenna subset selection [J].in Proc. the Seventh International Conference on Signal Processing (ICSP04), Beijing, China, Aug.31-Sept..2004, vol.2:1731-1734 [6] Liu J, Iserte A P, and Lagunas M A. Blind separation of OSTBC signals using ICA neural networks [J]. IEEE International Symposium on Signal Processing and Information Technology, Darmstadt, Germany, Dec.14-17, 2003. [7] Lei Z, Chin F P S, and Liang Y-C. Space-time block coding for switched beam systems [J]. In Proc. Wireless Communications and Networking, 2003 (WCNC03), New Orleans, LA, 2003: 699 -704. [8] Rinas J and Kammeyer K D. Comparison of blind source separation methods based on iterative algorithms [J]. 5th International ITG Conference on Source and Channel Coding(SCC04), Erlangen, Germany, January 14-16, 2004.
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