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In this paper, we consider a wireless sensor network in a single cell architecture, where a single hop between sensor nodes and central controller node exists. We propose a new medium access control (MAC) protocol and packet transmission scheme between sensor nodes with single antenna and central controller node with multiple antennas. Our scheme is an extension to previous work proposed by Coronel...
In recent years, diversity techniques have evolved into highly attractive technology for wireless communications in different forms. For instance, the channel fluctuations of the users in a network are exploited as multiuser diversity by scheduling the user with the best signal-to-noise ratio (SNR). When fading is slow, beamforming at a multiple antenna transmitter is used to induce artificial channel...
Opportunistic beamforming has been shown to achieve true beamforming gains with unquantized signal-to-interference ratio (SNR) feedback when there are sufficient users in the system [1], [2]. In this paper we investigate the performance of opportunistic beamforming with an SNR quantization scheme that maximizes the expected system throughput. To show that the opportunistic beamforming can still be...
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