In this paper, belief propagation (BP) multi-input multi-output (MIMO) detection with maximum ratio combining (MRC) and minimum mean square error (MMSE) pre-cancellation is proposed for overload MIMO. In the proposed scheme, MRC is applied before MMSE pre-cancellation. The BP MIMO detection with MMSE pre-cancellation leads to a reduction in diversity gain due to the decreased number of connections between variable nodes and observation nodes in a factor graph. MRC increases the diversity gain and contributes to the improvement of bit error rate (BER) performance. Numerical results obtained through computer simulation show that the BERs of the proposed BP MIMO detection with MRC and MMSE pre-cancellation are about 0.5 dB better than those of the conventional BP with MMSE pre-cancellation at a BER of 10−3.


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    Title :

    Belief Propagation Overloaded MIMO Detection using MRC Reception and MMSE Pre-cancellation


    Contributors:


    Publication date :

    2023-10-10


    Size :

    921403 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English




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