By adopting code rate as timing benchmark,the code tracking loop in the receiver tracks and calculates the sampling frequency offset between the actual and nominal values.

The sample timing error and sampling frequency offset are analyzed respectively in detail by the digital model.

Compared with original time domain phase detector,the improved one is self-normalized and bears sampling frequency offset up to ±90ppm,three times as much as the former method.

Three different sampling clock frequency offset and residual frequency offset estimation methods were developed to improve their estimation accuracy in internet protocol-orthogonal frequency division multiple access(IP-OFDMA)system,and the characteristics of the pilot structure in IP-OFDMA system was considered.

The effect of sample frequency offset was exploited on multi-input multi-output orthogonal frequency-division multiplexing(MIMO-OFDM) signals.

An efficient, accurate, hardware-based method realized via FPGA was proposed to dissolve the problems of integer frequency offset, fraction frequency offset, sample frequency offset and timing offset in OFDM system, etc.

In this paper, the sensitivity of sampling frequency offset in orthogonal frequency division MB-OFDM-UWB system is analyzed.

Method for determination of sampling frequency of routine monitoring of water quality;

Simulation of software sampling frequency adaptive algorithm for reducing spectrum leakage;

The effect of the sampling frequency on the time averaging characteristics of integrating sound level meter;

Influences of sample frequency and delays on tracking system;

The protect function can be achieved in the improvement of sample frequency.

However,the synchronous change of sample frequency and switching frequency makes the filter design complex,meanwhile the digital realization of engineering becomes difficult as the gain of controller and modulator vary with the sample frequency.