From the course: Introduction to Telecommunications: Standards, Networks, and Innovations
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Duplex schemes
From the course: Introduction to Telecommunications: Standards, Networks, and Innovations
Duplex schemes
- [Instructor] Every time you open an app or load a webpage, your phone is constantly communicating with the nearby cell tower. This connection isn't just one sided. It's back and forth exchange of data. So how does your phone manage to send and receive information simultaneously without missing a beat? In this video, I'll explain how two-way communication works, which is also known as duplex. We'll look into three types of duplex schemes. One is frequency-division duplex, which is FDD. Second is time-division duplex, which is TDD, and third is half-duplex FDD. Now, before getting into the types of duplex schemes, let's get clear on some basics. In any mobile network, there are two types of data communication: downlink and uplink. Downlink is when data flows from the base station, a cell tower, to your device. This happens when you're downloading a video or receiving a call. Uplink is the opposite: data flowing from your device back to the base station, like when you are uploading a…
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