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Relaying Through Distributed GABBA Space-Time Coded Amplify-and-Forward Cooperative Networks With Two-Stage Power Allocation

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3 Author(s)
Hung-Shiou Chen ; Dept. of Electron. Eng., Nat. Taiwan Univ. of Sci. & Technol., Taipei, Taiwan ; Wen-Hsien Fang ; Yie-Tarng Chen

This paper presents a two-stage power allocation for the distributed GABBA space-time coded amplify-and-forward (AF) cooperative networks . The new power allocation scheme first determines the transmit power between the source node and the relay nodes by maximizing the instantaneous rate, and thereafter optimizes the power distribution among the relay nodes via the watering filling. Moreover, a maximum-likelihood (ML) detection, which makes use of the encoding structure of the GABBA code, is addressed to alleviate the computational overhead. Conducted simulations show that the GABBA coded AF cooperative networks incorporated with the proposed twostage power allocation can attain close performance as the opportunistic relaying reported in the literature but with substantially reduced computational complexity.

Published in:

Vehicular Technology Conference (VTC 2010-Spring), 2010 IEEE 71st

Date of Conference:

16-19 May 2010

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