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Recently, space time block codes STBCsare proposed for multi-input and multi-output MIMO antenna systems. Designingan STBC with both low decoding complexity and non-vanishing property for theLong Term Evolution Advanced LTE-A remains an open issue. In this paper,first our previously proposed STBC’s non-vanishing property will be completelydescribed. The proposed STBC scheme has some interesting properties: 1 thescheme can achieve full rate and full diversity; 2 its maximum likelihood MLdecoding requires a joint detection of three real symbols; 3 the minimumdeterminant values MDVs do not vanish by increasing signal constellationsizes; 4 compatible with the single antenna transmission mode. The sentencehas been dropped. Second, in order to improve BER performance, we propose avariant of proposed STBC. This scheme further decreases the detectioncomplexity with a rate reduction of 33%; moreover, non-vanishing MDVs propertyis preserved. The simulation results show the second proposed STBC has betterBER performance compared with other schemes.

KEYWORDS

Space Time Block Codes, Maximum Likelihood Decoding, Non-Vanishing Minimum Determinant Value

Cite this paper

Azarbar, A. 2015 Non-Vanishing Space Time Block Code for Three Time Slots and Two Transmit Antennas. Journal of Computer and Communications, 3, 74-86. doi: 10.4236-jcc.2015.36008.





Autor: Ali Azarbar

Fuente: http://www.scirp.org/



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