Space-Time Block Codes with Limited Feedback Using Antenna Grouping

Chan-Byoung CHAE  Seijoon SHIM  Robert W. HEATH,Jr.  

IEICE TRANSACTIONS on Communications   Vol.E91-B   No.10   pp.3387-3390
Publication Date: 2008/10/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e91-b.10.3387
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
space-time block code,  full-diversity full-rate system,  antenna selection,  antenna grouping,  

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We propose an antenna grouping method that improves the error rate performance of space-time codes in a wide range of mobility environments. The idea is to group symbols to antennas based on limited feedback from the mobile station to utilize all antennas. Our approach requires only two bits of feedback information to achieve better link performance and full rate for a certain four transmit antenna system. Numerical results confirm the bit/frame error gains over the Alamouti-based space-time block code and antenna subset selection strategies.