On the Condition for STBC Cooperative System Outperforms Direct System

Le DING  Qinye YIN  Yiwen ZHANG  Yinkuo MENG  

IEICE TRANSACTIONS on Communications   Vol.E90-B   No.2   pp.334-337
Publication Date: 2007/02/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e90-b.2.334
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Fundamental Theories for Communications
STBC,  cooperative,  relay,  

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This letter investigates a practical space time block coded (STBC) cooperative system to determine under what conditions a cooperative system outperforms a direct one, and then proposes two criteria for selecting proper relay based on outage probability and capacity, respectively. Performance analysis and numerical results indicate that the STBC cooperative system is superior in practical scenarios.