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Cyclic Prefix problem in LTE

Cyclic Prefix problem in LTE The cyclic prefix (CP) in LTE is a guard interval inserted in the time domain between successive symbols or OFDM (Orthogonal Frequency Division Multiplexing) symbols. Its purpose is to mitigate the effects of multipath fading and inter-symbol interference by providing a guard time that allows the signals to settle before … Read more

How Frequency Band Selection and Cyclic Prefix Planning for LTE

It is very important when we talk about LTE Planning frequency band selection and Cyclic Prefix planning here I write basic background of it. Frequency Band Selection As many Operators worldwide possess spectrum in various frequency bands, choosing which band to use for LTE is always an important consideration. Parameters that will affect the overall … Read more

What is Cyclic prefix in LTE ?

The guard period after each rectangular pulse carrying the modulated data symbol is a simple and efficient method to deal with multi-path reception. The cyclic prefix (CP) simply consists of the last part of the following symbol. The size of the cyclic prefix field depends on the system and can even vary within one system. … Read more

How Normal and Extended Cyclic Prefix in LTE

The key to making OFDM realizable in practice is the use of the FFT algorithm, which has low complexity. In order for the IFFT/FFT to create an ISI-free channel, the channel must appear to provide a circular convolution. Adding cyclic prefix to the transmitted signal to create a signal that appears to be just like … Read more