Howtosignalprocessing
- What is sampling clock offset?
- What causes frequency offset in OFDM?
- What is the main objective of time synchronization for OFDM?
- What is timing offset in LTE?
What is sampling clock offset?
Sampling clock offset is the relative offset between the sampling period of transmitter and receiver. sro = -sco/(1+sco/1e6); % Sample rate offset in PPM. Model sampling clock offset, appending zeros to the waveform to allow for filter delay.
What causes frequency offset in OFDM?
The first is called Carrier Frequency Offset (CFO) and is caused by the difference between the transmitter and receiver's Local Oscillator (LO). This symptom of this offset is a phase rotation of incoming I/Q samples (time domain). The second is Sampling Frequency Offset (SFO) and is caused by the sampling effect.
What is the main objective of time synchronization for OFDM?
Therefore, the purpose of a timing recovery scheme in OFDM is to ensure that the FFT window starts from within the region of correct samples.
What is timing offset in LTE?
Time Offset shows the time offset from the beginning of the time capture to the beginning of the Measurement Interval. For example, when Time Offset = 5 ms and the Search Time trace starts at -8.3 ms, the beginning of the Measurement Interval is located at -3.3 ms within the Search Time trace.
