Principles of Digital Modulation. Principles of Digital Modulation: Outline of Lectures l Introduction to digital modulation - Why do I need to know how.

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Presentation transcript:

Principles of Digital Modulation

Principles of Digital Modulation: Outline of Lectures l Introduction to digital modulation - Why do I need to know how it works? l Relevant Modulation Schemes (QPSK, GMSK, M- Ary Schemes) l Coherent and Differential Reception l The impact of the mobile channel on digital modulation – noise and interference – random FM (narrowband fading) – intersymbol interference (wideband fading)

Why do I need to know how my radio works? l How is 2G cellular different from 3G? Which is most suitable for me? l What’s the difference between WiFi modes – is a better than b? l How does WiMAX work? l Bluetooth is cheap, why can’t I use it for everything? l Will my Bluetooth system interfere with my WLAN? l Why is my wireless link giving me poor performance? Can I just increase the transmit power to improve things? l What can we expect from the future of wireless communications? Will it provide ubiquitous, pervasive connectivity?