TITLE:
A Sphere Detection Based Adaptive MIMO Detection Algorithm for LTE-A System
AUTHORS:
Xuanli Wu, Lukuan Sun, Mingxin Luo
KEYWORDS:
Adaptive MIMO Detection; Sphere Detection; M-algorithm; LTE-A System
JOURNAL NAME:
Communications and Network,
Vol.5 No.2B,
July
10,
2013
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.