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Precoded Wake-Up Radio Signals in Multiple-Input Multiple-Output Cellular Networks

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Abstract

Internet of things (IoT) presupposes a massive number of low-complexity wireless devices, placed in hardly accessible locations and often powered by batteries with limited size and capacity. To extend the lifetime of these devices, wakeup radio (WuR) techniques were proposed. In the literature, WuR solutions have been evaluated with single-antenna base stations (BSs). In this paper, we evaluate the benefits of adding multiple antennas at BSs to transmit precoded WuR signals. The considered precoded schemes provide better spatial selectivity by focusing the power of the transmitted WuR signal on the targeted devices. Monte-Carlo simulations are used to assess the performance of the system in terms of successful wake-up probability of the WuR receiver. Numerical results show that, unlike data transmission scenarios, complex precoders as multicell minimum mean-squared error (M-MMSE), are surpassed by the simpler maximum ratio (MR) precoder for WuR. Index Terms-Wake-up radio (WuR), precoding, multipleinput multiple-output (MIMO), cellular networks.
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Dates and versions

hal-03784020 , version 1 (22-09-2022)

Identifiers

  • HAL Id : hal-03784020 , version 1

Cite

Ammar El Falou, Nour Kouzayha, Rawaa El Soufi, Charlotte Langlais. Precoded Wake-Up Radio Signals in Multiple-Input Multiple-Output Cellular Networks. PIMRC2022 - 2nd IEEE Workshop on Sustainable and Intelligent Green Internet of Things for 6G and Beyond, Sep 2022, Virtuel, Japan. ⟨hal-03784020⟩
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