A Sphere Detection Based Adaptive MIMO Detection Algorithm for LTE-A System

Xuanli  Wu; Lukuan  Sun; Mingxin  Luo

doi:10.4236/cn.2013.52B005

Xuanli Wu^*, Lukuan Sun, Mingxin Luo

Abstract: An adaptive MIMO detection algorithm for LTE-A system which is based on sphere detection is proposed in this paper. The proposed algorithm uses M-algorithm for reference to remove unreliable constellation candidates before search, and the number of constellation reservation is adaptively adjusted according to SNR. Simulations of LTE-A downlink show that the BER performance of the proposed detection algorithm is nearly the same as maximum likelihood (ML) detection algorithm. However, the complexity is reduced by about 30% compared with full constellation sphere detection.

Keywords: Adaptive MIMO Detection; Sphere Detection; M-algorithm; LTE-A System

Cite this paper: X. Wu, L. Sun and M. Luo, "A Sphere Detection Based Adaptive MIMO Detection Algorithm for LTE-A System," Communications and Network, Vol. 5 No. 2, 2013, pp. 25-29. doi: 10.4236/cn.2013.52B005.

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