Reference Signals:-
These are used by UE for channel estimation.These pilot symbols provide an estimate of the channel conditions at given locations within a subframe. Reference signals are embedded into specific RE's such that channel conditions can be known at different frequency and time domain within a subframe. Reference signals are always QPSK modulated.
3 types of RS :
1. Cell Specific
2. UE Specific
3. Positioning Reference Signals
These are used by UE for channel estimation.These pilot symbols provide an estimate of the channel conditions at given locations within a subframe. Reference signals are embedded into specific RE's such that channel conditions can be known at different frequency and time domain within a subframe. Reference signals are always QPSK modulated.
3 types of RS :
1. Cell Specific
2. UE Specific
3. Positioning Reference Signals
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