Space-Time Block Codes from Quasi-Orthogonal Designs with Maximal Rate or Minimal Decoding Complexity

Huanfei MA  Zhihao WU  Haibin KAN  

Publication
IEICE TRANSACTIONS on Communications   Vol.E93-B   No.2   pp.399-402
Publication Date: 2010/02/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E93.B.399
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
Keyword: 
quasi-orthogonal,  space time block code,  transmission rate,  wireless communication,  decoding complexity,  

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Summary: 
This letter investigates the space-time block codes from quasi-orthogonal design as a tradeoff between high transmission rate and low decoding complexity. By studying the role orthogonality plays in space-time block codes, upper bound of transmission rate and lower bound of decoding complexity for quasi-orthogonal design are claimed. From this point of view, novel algorithms are developed to construct specific quasi-orthogonal designs achieving these bounds.