Depth-First and Breadth-First Search Based Multilevel SGA Algorithms for Near Optimal Symbol Detection in MIMO Systems

@article{Jia2008DepthFirstAB,
  title={Depth-First and Breadth-First Search Based Multilevel SGA Algorithms for Near Optimal Symbol Detection in MIMO Systems},
  author={Yugang Jia and Christophe Andrieu and Robert J. Piechocki and Magnus Sandell},
  journal={IEEE Transactions on Wireless Communications},
  year={2008},
  volume={7},
  pages={1052-1061}
}
The multilevel structure of the N-QAM modulation constellations is exploited to significantly reduce the complexity of the sequential Gaussian approximation (SGA) algorithm for near optimal symbol detection in spatial multiplexing multiple- input multiple-output (MIMO) system. We propose two multilevel SGA algorithms (MSGA) which are based on depth- first search (DFS) and breadth-first search (BFS) respectively. Additionally, an important methodological contribution to this multilevel technique… CONTINUE READING
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