Resolution and sampling rate needed for quantisation of a narrowband signal in wideband noise
Abstract
The paper examines how large the input noise to a quantizer can be with respect to the quantization interval and the input noise bandwidth with respect to the sampling rate in order that quantization noise does not degrade a system's signal/noise ratio more than a specified amount. Appropriate minimum values of sampling rate and input bandwidth are derived. The results are applied to a digital radio receiver, in which quantization is performed in a wideband stage at RF or IF, and filtering and detection are carried out by a digital signal processor.
- Publication:
-
Electronics Letters
- Pub Date:
- October 1985
- DOI:
- 10.1049/el:19850692
- Bibcode:
- 1985ElL....21..978D
- Keywords:
-
- Analog To Digital Converters;
- Radio Receivers;
- Signal Processing;
- Signal To Noise Ratios;
- Thermal Noise;
- Bandwidth;
- Broadband;
- Intermediate Frequencies;
- Measurement;
- Narrowband;
- Radio Frequencies;
- Random Noise;
- Communications and Radar