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Efficient power allocation for decentralized distributed space-time block coding

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2 Author(s)
Lu Zhang ; Univ. of Delaware, Newark, DE ; Cimini, L.J.

In this paper, we propose two ad-hoc, yet efficient, power allocation strategies for a decentralized distributed space-time block coding (Dis-STBC) system where knowledge about the channel state information (CSI) is not available at the transmitter(s). The first is an open-loop strategy which requires no control signaling; the second is a feedback-assisted strategy which requires some control signaling, but which can achieve better power-efficiency. Focusing on a particular decentralized Dis-STBC scheme (m-group), the asymptotic outage probability is derived and the power-efficiency advantages of the proposed strategies over a uniform-power strategy are illustrated by evaluating the outage and link failure probabilities.

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Wireless Communications, IEEE Transactions on  (Volume:8 ,  Issue: 3 )