A novel iterative algorithm base d on eight channel filter bank to estimate single-frequency is proposed.A highly overlapped filter bank is adopted in the proposed method to extend frequency estimation arrange and increasing SNR in single channel.By exploiting filter and decimation

the iterative algorithm is applied.Through this way the computational complexity is kept low and estimation is accurate

even adopting the simplest estimation method

Un-Weighted Linear Predictor (UWLP).Furthermore this frequency estimator has been realized by FPGA.The computer simulation result shows the proposed method has good performance.