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In this first chapter,
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we'll look at the properties and the
characteristics of an embedded system.
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We will deal only with the world
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of the Internet of Things and therefore
with small low power systems.
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Before studying in details to LoRaWAN
protocol, we'll compare it with existing
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protocol to understand
what the differences are.
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We will then see how the LoRa modulation
can solve the problem of range
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and consumption,
but also how can thousands of devices can
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transmit messages
on the same frequency band.