Time Synchronization for Wireless Sensor Networks
IPDPS '01 Proceedings of the 15th International Parallel & Distributed Processing Symposium
Timing-sync protocol for sensor networks
Proceedings of the 1st international conference on Embedded networked sensor systems
Introduction to Space-Time Wireless Communications
Introduction to Space-Time Wireless Communications
Distributed space-time-coded protocols for exploiting cooperative diversity in wireless networks
IEEE Transactions on Information Theory
A simple transmit diversity technique for wireless communications
IEEE Journal on Selected Areas in Communications
Energy-efficiency of MIMO and cooperative MIMO techniques in sensor networks
IEEE Journal on Selected Areas in Communications
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Cooperative transmission using space time codes can be used to reduce transmission energy consumption for long range communication in wireless sensor networks (WSN). However, differing from traditional (multi-input-multi-output) MIMO systems, distributed cooperative communication systems in WSN usually lack of perfect synchronization. For the cooperative systems using Alamouti code, the effect of synchronization error on the receive bit error rate (BER) performance over Rayleigh fading channel is investigated in this paper. Taking also path loss effect and the propagation delay into account, the optimal transmit power allocation and the optimal reception areas are presented. The analytical and simulation results show that, for a small range of synchronization error and using the optimal transmit power allocation, the degradation of receive BER performance is negligible for some reception area.