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Adaptive Resource Allocation for Two-Hop Non-Regenerative Coded Cooperation Transmission System

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4 Author(s)
Wang Zizhou ; Lab. of Wireless Theories & Technol., Beijing Univ. of Posts & Telecommun. ; Wang Chenwei ; Wang Yafeng ; Yang Dacheng

Cooperative transmission is considered as an efficient way to combat multipath fading and to increase the system capacity. Combining with effective coding scheme, the diversity and coding gain can be obtained. The concept of coded cooperation which employs distributed linear dispersion codes (LDC) for two-hop non-regenerative (NR) relay scenario is introduced and analyzed in terms of capacity gains over the system with the traditional coding scheme. Taking the maximum end-to-end data rate as the optimal criterion, an adaptive resource allocation (RA) scheme under the transmit power constraint is proposed to distribute appropriate resource to each hop based on the channel state information (CSI) and certain conditions for optimizing the performance of the distributed LDC. Theoretic analysis and numeric results indicate that with the adaptive scheme, the proposed coded cooperation system will obtain higher capacity benefits than the system with direct transmission and traditional uniform RA.

Published in:

Vehicular Technology Conference, 2007. VTC2007-Spring. IEEE 65th

Date of Conference:

22-25 April 2007

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