A full-rate, full-diversity four-antenna quasi-orthogonal space-time block code

2005 ◽  
Vol 4 (2) ◽  
pp. 363-366 ◽  
Author(s):  
L.A. Dalton ◽  
C.N. Georghiades
Keyword(s):  
Block Code ◽  
Space Time ◽  
Time Block ◽  
Space Time Block Code ◽  
Full Diversity ◽  
Orthogonal Space ◽  
Full Rate

scholarly journals A Cyclotomic Lattice Based Closed Loop QOSTBC for Four Transmit Antennas

2019 ◽  
Vol 8 (5S3) ◽  
pp. 167-171
Keyword(s):  
Closed Loop ◽  
Block Code ◽  
Space Time ◽  
Lattice Points ◽  
Time Block ◽  
Error Performance ◽  
Space Time Block Code ◽  
Full Diversity ◽  
Orthogonal Space ◽  
Full Rate

Drawback of the Space Time Block Code (STBC) is, for complex constellations, full rate and full diversity design exist only for two transmit antennas. In this paper, we propose a novel closed loop Quasi Orthogonal Space Time Block Code (QOSTBC) system based on cyclotomic lattices for four transmit antennas. It is a full rate and full diversity design where the information bits are mapped into four dimensional (4-D) lattice points. The bit error and symbol error performance of the system are evaluated by simulation.

Analysis of Minimum Decoding Complexity Quasi-Orthogonal Space-Time Block Code for 6 Transmit Antennas

2013 ◽  
Vol 694-697 ◽  
pp. 2568-2571
Author(s):  
Mang Liao ◽  
Meng Xing Wang ◽  
Ling Xu Jin
Keyword(s):  
Block Code ◽  
Space Time ◽  
The Novel ◽  
Time Block ◽  
Decoding Complexity ◽  
Space Time Block Code ◽  
Full Diversity ◽  
Orthogonal Space ◽  
Transmission Reliability ◽  
Linear Decoding

Previous work on quasi-orthogonal space-time block code (QO-STBC) has been designed to achieve full rate and full diversity gain for four antennas. However this conventional QO-STBC scheme decoding is complex. For achieving more diversity gains, an extended QO-STBC scheme is provided to achieve full diversity with one rate for six antennas. Furthermore, by transforming the detection matrix to an orthogonal one, this novel scheme can achieve a simple linear decoding. Therefore it proposes an extended minimum decoding complexity QO-STBC (MDC-QO-STBC) for six antennas. Due to eliminate the interference from different equivalent channels, the novel extended MDC-QO-STBC scheme improves transmission reliability and linear decoding complex compared with the conventional QO-STBC scheme. At last extensive simulation results are presented to prove the theoretical analysis.

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