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The IEEE 802.11a specifications are used by many to understand a wireless communication link built using OFDM. In this post, I have put together a set of 10 multiple choice questions based on 802.11a specifications. The questions are on the building blocks in 802.11a specifications, preamble structure and so on. Upon completion of the quiz, you will be lead to a page showing the correct answers and their explanations.
Click here to download IEEE 802.11a specifications.
Note: The quiz might not be visible on RSS reader or over email. Please visit the site to access the quiz.
Good luck!
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{ 4 comments… read them below or add one }
Regarding the question on symbol duration, the checkbox answer shows it as 3.2 us, where as in the explanation it is mentioned as 4 us including the GI. I think the check box should also show 4 us as the correct option to avoid confusion.
@Sudeep: Thanks for noticing it. I corrected.
Regarding frequency offset tolerance, does it mean for 802.11g, this figure needs to be only around 100 KHz ~(2.4*40)? Or does the tolerance become +/- 40ppm in that case?
@Sudeep: For the 802.11g (ERP-PHY, see clause 19.4.7.2 in IEEE 802.11-2007 specifications), the tolerance specified is +/-25ppm. So the maximum frequency offset comes around to 2.5GHz * 50ppm = 125kHz.