Introduction to Optical Wireless communicaitons - Northumbria ...
Introduction to Optical Wireless communicaitons - Northumbria ...
Introduction to Optical Wireless communicaitons - Northumbria ...
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
Common Baseband Digital Modulation<br />
Techniques<br />
OOK<br />
Simple <strong>to</strong> implement<br />
High average power requirement<br />
Suitable for Bit Rate greater tha 30Mb/s<br />
Performance de<strong>to</strong>reaites at higher bit<br />
rates<br />
PPM<br />
Complex <strong>to</strong> implement<br />
Lower average power requirement<br />
Higher transmission bandwidth<br />
Requires symbol and slot synchronisation<br />
DPIM<br />
Higher average power requirement<br />
compared with PPM<br />
Higher throughput<br />
Built in symbol synchronisation<br />
Performance midway between PPM and<br />
OOK.<br />
DH-PIM<br />
The highest symbol throughput<br />
Lower transmission bandwidth than PPM and DPIM<br />
Built in symbol synchronisation<br />
Higher average power requirement compared with PPM and DPIM.<br />
Complex decoder
Change language