Design Criteria for Omnidirectional STBC in Massive MIMO Systems

In this letter, we study the design criteria for omnidirectional space time block codes (STBCs) in downlink massive multiple-input multiple-output (MIMO) systems. To this end, we first derive a tighter upper bound on the average error probability and then use it to formulate two design criteria, nam...

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Bibliographic Details
Published in:IEEE wireless communications letters 2019-10, Vol.8 (5), p.1435-1439
Main Authors: Morsali, Alireza, Hosseini, Seyyed Saleh, Champagne, Benoit, Chang, Xiao-Wen
Format: Article
Language:English
Subjects:
Antennas
Bit error rate
Block codes
Codes
coding gains
Design criteria
Determinants
diversity gain
Eigenvalues and eigenfunctions
Error probability
Massive MIMO
MIMO (control systems)
MIMO communication
omnidirectional
Precoding
space time block code
STBC
Upper bound
Upper bounds
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Summary:In this letter, we study the design criteria for omnidirectional space time block codes (STBCs) in downlink massive multiple-input multiple-output (MIMO) systems. To this end, we first derive a tighter upper bound on the average error probability and then use it to formulate two design criteria, namely the rank criterion and the sum determinant criterion (SDC). The rank criterion is similar to that for conventional MIMO, but it is obtained here by invoking the new upper bound for massive MIMO. The SDC is more accurate than its conventional MIMO counterpart since it takes into account the sum of the determinants of the codeword difference matrices, as opposed to the minimum of these determinants. In addition, the SDC provides a useful metric for the performance comparison and design of STBCs. The effectiveness of the proposed SDC for omnidirectional STBC is validated by simulations for massive MIMO systems.
ISSN:2162-2337
2162-2345
DOI:10.1109/LWC.2019.2921314