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What is the minimum length of cyclic prefix in OFDM systems

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What is the minimum length of cyclic prefix in OFDM systems
posted Feb 29, 2016 by Shyam Narayan

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1 Answer

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There are mainly two types of cyclic prefix used.
1. Normal cyclic prefix
2. Extended cyclic prefix

For both the types, minimum values are defined as follows:
Normal Cyclic Prefix : There will be total 7 symbols per time slot . First symbol is 5.2 microseconds long while remaining 6 symbols would be 4.69 microseconds long

Extended cyclic prefix : There will be total 6 symbols per time slot and each symbol will be 16.67 microseconds long.

Reference:
https://home.zhaw.ch/kunr/NTM1/literatur/LTE%20in%20a%20Nutshell%20-%20Physical%20Layer.pdf

answer Feb 29, 2016 by Vimal Kumar Mishra
Thanks Vimal Kumar Mishra but this is in context of LTE but in general which physical parameter decides this length so that ISI is removal is done?
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