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Non-uniform sampling (NUS) controlling baseband analog front-end in a Software Defined Radio multistandard receiver was previously proposed in our works. Non-uniform sampling offers the alias-free sampling feature. Non-uniform sampling based multistandard receiver relaxes Anti-Aliasing Filter (AAF), relaxes automatic gain control circuit and reduces power consumption of the analog-to-digital converter...
Uniform sampling introduces aliases due to periodic sampling instants. Therefore, in conventional receiver architecture, an Anti-Aliasing Filter (AAF) is required to suppress these aliases. The used solution to relax the AAF consists on the over-sampling technique. A promising alternate solution is to non-uniformly sample the analog signal. Indeed, Non-Uniform Sampling (NUS) has been studied since...
Non Uniform Sampling technique applied to Software Defined Radio theme seems to be a suitable solution to avoid aliases and reduce their drawbacks on other terminal components especially filters. The proposed work presents a solution to apply Non Uniform Sampling in a radio receiver. This paper deals with designing and implementing a non uniform generator that manages the sampling step. The proposed...
The radio communication tendency is to reach Software Radio applied to multistandard receiver. Non uniform sampling controlling Analog-to-Digital Converter in Homodyne multistandard receiver was previously proposed in our works. Non uniform sampling offers the advantage of alias-free sampling. This can lead to many advantages in the multistandard based non uniform sampling receiver such as, essentially,...
For software defined radio, non uniform sampling (NUS) is a process promising IF down-conversion with alias reduction. Applied to multi-standard receiver, this technique relaxes system design constraints. This paper presents a new design strategy for clock generation in NUS based multi-standard radio receiver supporting GSM, UMTS and Wi-Fi standards. Sampling frequency choice is discussed in order...
This paper focuses on digital reconstruction methods of uniform signal from its non uniform samples. A specific Non Uniform Sampling (NUS) technique for controlling Analog-to-Digital Conversion (ADC) in a multi-standard radio receiver is presented. Several reconstruction algorithms are summarized and a general mathematical formula is used to describe these algorithms. Different methods are classified...
In this paper a non-uniform sampling (NUS) technique for controlling analog-to-digital conversion (ADC) in a multistandard radio receiver is proposed. In this context of wide band radio signals, the NUS-based ADC offers the advantages of relaxing antialiasing filter constraints and decreasing the "mean" of the sampling frequency. This leads to ADC power consumption reduction. The improvement...
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