Name
Title | ||
|---|---|---|
Computationally Efficient Architecture for Accurate Frequency Estimation with Fourier Interpolation. |
Abstract | ||
|---|---|---|
A simplified DFT-based algorithm and its VLSI implementation for accurate frequency estimation of single-tone complex sinusoid signal are investigated. The proposed algorithm estimates frequency by interpolation using Fourier coefficients. It consists of a coarse search followed by a fine search, and its performance closely achieves the Cramer–Rao low bound (CRLB) even in low SNR region. Moreover, a pipelined triple-mode CORDIC architecture is designed to efficiently support complex multiplication, complex magnitude calculation and real division. The triple-mode CORDIC-based radix-4 architecture is employed for the hardware implementation of the frequency estimator, and is suitable for not only fast Fourier transformation but also accurate frequency estimation. A frequency estimator with 1024-point samples is implemented and verified on FPGA. It works at 215 MHz on a Xilinx XC6VLX240T FPGA device, and uses up 4,161 registers and 6,986 slice LUTs. ASIC synthesis results show that it requires an area of 60K equivalent NAND2 gates with a clock rate of 500 MHz at SMIC 0.18 μm technology. The whole latency of the frequency estimator is 2336 cycles. The proposed architecture provides a good trade off between hardware overhead, estimation performance and computation latency. |
Year | DOI | Venue |
|---|---|---|
2014 | 10.1007/s00034-013-9660-x | Circuits Systems and Signal Processing |
Keywords | Field | DocType |
Frequency estimation, Fast Fourier transformation (FFT), Fourier interpolation, Triple-mode CORDIC, Radix-4 architecture | Control theory,Computer science,Interpolation,Parallel computing,Field-programmable gate array,Algorithm,Fourier transform,CORDIC,Fast Fourier transform,Very-large-scale integration,Clock rate,Estimator | Journal |
Volume | Issue | ISSN |
33 | 3 | 1531-5878 |
Citations | PageRank | References |
1 | 0.36 | 19 |
Authors | ||
5 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Dongpei Liu | 1 | 19 | 3.60 |
| Hengzhu Liu | 2 | 86 | 23.28 |
| Li Zhou | 3 | 5 | 1.44 |
| Jianfeng Zhang | 4 | 20 | 4.70 |
| Botao Zhang | 5 | 55 | 10.73 |