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A bandwidth and energy efficient cooperative diversity scheme based on quadrature signaling is proposed. The quadrature signaling is achieved by transmitting in the in-phase and quadrature components of QPSK modulation. The diversity gain and the bit error rate of the proposed cooperative diversity scheme improve with the inter-user channel quality. It is shown that the proposed scheme can achieve a diversity order of two for high inter-user signal-to-noise ratios, if the cooperating users are located within a region that permits successful cooperation. The cooperative region corresponding to a specified bit error rate is defined and derived
Published in:
Wireless Communications, IEEE Transactions on
(Volume:6
,
Issue:
1
)
Date of Publication: Jan. 2007
- Page(s):
- 41 - 45
- ISSN :
- 1536-1276
- INSPEC Accession Number:
- 9269281
- Digital Object Identifier :
- 10.1109/TWC.2007.05092
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 26 February 2007
- Issue Date :
- Jan. 2007
- Sponsored by :
- IEEE Communications Society
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