الفهرس 
SIGMA-DELTA MODULATOR OVERVIEW
SDM for 5G ApplicationsOnly 14 pages are availabe for public view
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Abstract
This thesis aims to study the system-level optimization and the performance enhancement of the sigma-delta modulator that could be used in the 5G communication systems. This thesis consists of seven chapters, including lists of contents, tables and figures as well as list of references. There are multiple contributions presented in this thesis.
First, this thesis presents a SIMULINK-based toolbox that could be used to do the system-level optimization of the continuous-time low-pass sigma-delta modulator. Moreover, a systematic method for the system-level optimization using the proposed toolbox is presented. The accuracy of the presented toolbox models has been validated using Cadence Spectre simulations.
Second, this thesis presents a systematic method that could be used for the scaling of the signal swings in the continuous-time low-pass sigma-delta modulator. Moreover, a SIMULINK-based toolbox that includes the systematic method is presented.
Third, this thesis presents a method that could be used to include the system feedforward coefficients in the continuous-time low-pass sigma-delta modulator by creating feedforward paths in the last integrator. Thus, the adder block could be removed without having limitations; which helps to saves power and area. The proposed method has been verified using Cadence Spectre simulations.
Fourth, this thesis presents a system-level design of a reconfigurable multi-mode continuous-time low-pass sigma-delta modulator for 5G applications. The proposed modulator can support multiple channel bandwidths in the 5G standard; which are 80, 40, 20, and 10 MHz. The SIMULINK simulation results of the proposed modulator are presented. Furthermore, the proposed design has been verified using Cadence Spectre simulations of the circuits behavioral models.