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Information Technology Journal
  Year: 2008 | Volume: 7 | Issue: 7 | Page No.: 1067-1071
DOI: 10.3923/itj.2008.1067.1071
 
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A Novel CDMA-BLAST Space-Time Code Scheme

Zhang Mingxin, Ruan Wenhui, Xingle Feng, Zhou Yatong, Junyi Shen and Zhu Yaling

Abstract:
This study proposes a novel CDMA BLAST (Bell Labs layered space-time) space-time code scheme used in forward link in a cellular CDMA system. Both scrambling code and orthogonal spreading code are employed to specify different transmit antennas and users, respectively. Since scrambling codes use pseudo-noise sequences providing excellent quality of auto and cross correlation proprieties, the proposed novel scheme can obtain considerable improvement of performance without sacrificing the precious code resources. The simulation results demonstrates the average BER of improved scheme decrease 10 dB for (2, 2) system with 4 users when Eb/N0 = 7 dB.
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How to cite this article:

Zhang Mingxin, Ruan Wenhui, Xingle Feng, Zhou Yatong, Junyi Shen and Zhu Yaling, 2008. A Novel CDMA-BLAST Space-Time Code Scheme. Information Technology Journal, 7: 1067-1071.

DOI: 10.3923/itj.2008.1067.1071

URL: https://scialert.net/abstract/?doi=itj.2008.1067.1071

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