Distributed probabilistic data association detector with turbo base-station cooperations in multi-user multi-cell MIMO systems

被引:0
作者
Yufang Yin
Gangjun Li
Hua Wei
机构
[1] Chengdu Technological University,
[2] Chengdu University of Information and Technology,undefined
来源
EURASIP Journal on Wireless Communications and Networking | / 2017卷
关键词
PDA; MIMO; Turbo detector; BS cooperations;
D O I
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学科分类号
摘要
We address the severe interference condition with unity frequency re-use factor in each cell and propose a novel distributed receiver for reliable detection of the uncoded data transmitted in multi-user multi-cell multiple input, multiple output (MIMO) systems. The new algorithm employs distributed probabilistic data association (PDA) with turbo base-station (BS) cooperations (PDA-TB). From a Bayesian point of view, we modify the original complex PDA detector to incorporate the a priori probability, which makes the complex PDA detector applicable to turbo processing: the soft information is extracted using PDA algorithm at local BS and then used as the a priori probability for further detection at neighboring BSs. Final soft decision is made after the algorithm converges. In this way, the benefit of macro-diversity is achieved and the inter-cell interferences are mitigated. In heavy interference condition, the proposed algorithm outperforms the distributed PDA aided soft combining (PDA-SC) and achieves the near optimal performance. Meanwhile, low complexity is maintained due to the rapid convergence.
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