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Mutual Amplify-and-Forward Cooperation Using Modified STBC in OFDMA System
Jae-Seon YOON Jee-Hoon KIM Hyoung-Kyu SONG
Publication
IEICE TRANSACTIONS on Communications
Vol.E93-B
No.5
pp.1330-1333 Publication Date: 2010/05/01 Online ISSN: 1745-1345
DOI: 10.1587/transcom.E93.B.1330 Print ISSN: 0916-8516 Type of Manuscript: LETTER Category: Wireless Communication Technologies Keyword: cooperation, OFDMA, STBC,
Full Text: PDF(766.9KB)>>
Summary:
Recently, the orthogonal frequency-division multiple access (OFDMA) based wireless communication system is usually used in interactive digital video broadcasting environments or the wireless metropolitan area network (WMAN). Therefore, the relative condition of the inter-user channel can be easily deteriorated. This letter proposes and evaluates the mutual amplify-and-forward (AF) cooperation between two users using modified space time block code (STBC) to provide the reliability for an OFDMA system with a single antenna in an inferior inter-user channel environment. As a result, an OFDMA system adopting the proposed cooperation becomes more robust to inferior inter-user channels than our previously proposed decode-and-forward (DF) cooperation.
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