Advanced Search
Volume 27 Issue 7
Jul.  2005
Turn off MathJax
Article Contents
Liu Chao, Yang Zong-kai, He Jian-hua . A New Fast Generalized Sphere Decoding Algorithm in MIMO Systems[J]. Journal of Electronics & Information Technology, 2005, 27(7): 1114-1117.
Citation: Liu Chao, Yang Zong-kai, He Jian-hua . A New Fast Generalized Sphere Decoding Algorithm in MIMO Systems[J]. Journal of Electronics & Information Technology, 2005, 27(7): 1114-1117.

A New Fast Generalized Sphere Decoding Algorithm in MIMO Systems

  • Received Date: 2004-02-06
  • Rev Recd Date: 2004-09-27
  • Publish Date: 2005-07-19
  • A new generalized sphere decoding algorithm is proposed for under-determined MIMO systems with fewer receive antennas TV than transmit antennas M. The proposed algorithm is significantly faster than the existing generalized sphere decoding algorithms. The basic idea is to partition the transmitted signal vector into two subvectors xa and xb with N-1 and M- N+l elements respectively. After some simple transformations, an outer layer Sphere Decoder (SD) can be used to choose proper xb and then use an inner layer SD to decide xa thus the whole transmitted signal vector is obtained. Simulation results show that Double Layer Sphere Decoding (DLSD) has far less complexity than the existing Generalized Sphere Decoding (GSDs).
  • loading
  • Telatar I E. Capacity of multi-antenna Gaussian channels[J].Eur.Trans. Telecom.1999, 10(3):585-[2]Foschini G J. Layered space-time architecture for wireless communication in a fading environment when using multielement antennas[J].Bell Labs. Tech. J.1996, 1(2):41-[3]Marzetta T L, Hochwald B M. Capacity of a mobile multiple-antenna communication link in Rayleigh flat fading[J].IEEE Trans. on Info. Theory.1999, 45(1):139-[4]Damen M O, Gamal H E, Caire G. On maximum-likelihood detection and the search for the closest lattice point[J].IEEE Trans. on Info. Theory.2003, 49(10):2389-[5]Agrell E, Eriksson T, Vardy A, Zeger K. Closest point search in lattices[J].IEEE Trans. Info. Theory.2002, 48(8):2201-[6]Viterbo, Boutros. A universal lattice code decoder for fading channels[J].IEEE Trans. on Info. Theory.1999, 45(5):1639-1642[7]Damen M O, Abed-Meraim K, Belfiore J C. Generalised sphere decoder for asymmetrical space-time communication architecture[J].Electronics Letters.2000, 36(2):166-[8]Dayal P, Varanasi M K. A fast generalized sphere decoder for optimum decoding of under-determined MIMO systems. 41st Annual Allerton Conf. on Comm. Control, and Comput.,Monticello, Italy, Oct. 2003, Vol. 3:256 - 261.
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Article Metrics

    Article views (2217) PDF downloads(699) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return