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Behavioral modeling, simulation and synthesis of multi-standard wireless receivers in MATLAB/SIMULINK

AuthorsMorgado, Alonso; Rivas, Vicente J. ; Río, Rocío del; Castro-López, R. ; Fernández, Francisco V.
KeywordsRF circuit and system synthesis
Multi-standard communications
Issue DateFeb-2008
CitationIntegration 41(2): 269-280 (2008)
AbstractThis paper presents a SIMULINK block set for the behavioral modeling and high-level simulation of RF receiver frontends. The toolbox includes a library with the main RF circuit models that are needed to implement wireless receivers, namely: low noise amplifiers, mixers, oscillators, filters and programmable gain amplifiers. There is also a library including other blocks like the antenna, duplexer filter and switches, required to implement reconfigurable architectures. Behavioral models of building blocks include the main ideal functionality as well as the following non-idealities: thermal noise, characterized by the noise figure and the signal-to-noise ratio, and non-linearity, represented by the input-referred second-order and third-order intercept points, IIP_2 and IIP_3, respectively. In addition to these general parameters, some block-specific errors have also been included, like oscillator phase noise and mixer offset. These models have been incorporated into the SIMULINK environment making an extensive use of C-coded S-functions and reducing the number of library block elements. This approach reduces the simulation time while keeping high accuracy, which makes the proposed toolbox very appropriate to be combined with an optimizer for the automated high-level synthesis of radio receivers. As an application of the capabilities of the presented toolbox, a multi-standard direct-conversion receiver intended for 4G telecom systems is modeled and simulated considering the building block requirements for the different standards.
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