Name
Abstract | ||
|---|---|---|
Analog to digital converters (ADC) and cascade integrator-comb (CIC) filters are the basic modules in a digital intermediate frequency (IF) spectrum analyzer. The optimal output signal-to-noise ratio (SNR) of the digital IF spectrum analyzer with the Gaussian input signal is considered in this letter. The idea is to strike a trade-off between the saturation error and granular error when quantizing the Gaussian input signal. This letter firstly derives a relationship among the maximum allowed input signal amplitude, input signal power, ADC quantization bits and optimal quantization SNR. Besides, an optimal clipping strategy for the CIC decimation filter with variable decimation rates is proposed. Both numerical and simulation results are presented to demonstrate that the proposed clipping method is able to achieve significant SNR gain compared with the traditional rounding or truncation method. |
Year | DOI | Venue |
|---|---|---|
2013 | 10.1109/LSP.2012.2227255 | IEEE Signal Process. Lett. |
Keywords | Field | DocType |
optimisation,gaussian input signal,maximum allowed input signal amplitude,cic filter,analogue-digital conversion,cic decimation filter,gaussian distribution,optimal clipping strategy,analog to digital converter,quantization,quantisation (signal),saturation error,truncation method,digital integrated circuits,cascade networks,cascade integrator-comb filter,adc quantization bit,clipping method,gaussian processes,numerical simulation,performance optimization,comb filters,snr,spectrum analyzer,rounding method,input signal power,digital intermediate frequency spectrum analyzer,spectral analysers,digital if spectrum analyzer,granular error,signal-to-noise ratio | Control theory,Computer science,Clipping (signal processing),Artificial intelligence,Matched filter,Analog signal,Signal analyzer,Decimation,Pattern recognition,Digital signal,Algorithm,Digital down converter,Quantization (signal processing) | Journal |
Volume | Issue | ISSN |
20 | 1 | 1070-9908 |
Citations | PageRank | References |
3 | 0.45 | 2 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Yonghong Hou | 1 | 47 | 4.50 |
| Guihua Liu | 2 | 3 | 0.78 |
| Qing Wang | 3 | 345 | 76.64 |
| Wei Xiang | 4 | 284 | 17.82 |