Flexible sigma delta ADC for mobile WiMAX applications

Author

Mallek, Jihene ; Mnif, Hassene ; Loulou, Mourad

Author_Institution

Lab. of Electron. & Inf. Technol., Univ. of Sfax, Sfax, Tunisia

fYear

2012

fDate

25-28 March 2012

Firstpage

502

Lastpage

505

Abstract

The IEEE 802.16e-2005 standard, also denoted as mobile WIMAX, was introduced as one of the first real efforts towards the deployment of fourth generation communication systems providing fixed and mobile broadband wireless access. In this paper, we present the studying and sizing of the homodyne receiver, especially the flexible sigma delta analog digital converter intended for use in the WiMAX band from 3.4GHz to 3.6GHz in 5MHz, 7MHz and 10MHz channel bandwidth. Our design technique consists to keep proper ADC architecture in response to multi-mode aspect of WiMAX standard. For this, we set each sampling frequency corresponding to each channel bandwidth so that we will keep the same OSR value for different channel bandwidth. For such specifications, a flexible fourth order continuous-time sigma-delta ADC, with mono-bit quantizer, is presented and its simulation results are shown by using Matlab Simulink.

Keywords

4G mobile communication; WiMax; broadband networks; flexible electronics; quantisation (signal); radio receivers; sigma-delta modulation; telecommunication standards; wireless channels; ADC architecture; IEEE 802.16e-2005 standard; Matlab Simulink; OSR value; WiMAX band; WiMAX standard; bandwidth 10 MHz; bandwidth 5 MHz; bandwidth 7 MHz; channel bandwidth; flexible fourth order continuous-time sigma-delta ADC; flexible sigma delta ADC; flexible sigma delta analog digital converter; fourth generation communication system; frequency 3.4 GHz to 3.6 GHz; homodyne receiver; mobile WiMAX application; mobile broadband wireless access; mono-bit quantizer; multimode aspect; sampling frequency; Bandwidth; Mobile communication; Modulation; Receivers; Sigma delta modulation; Signal to noise ratio; WiMAX;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrotechnical Conference (MELECON), 2012 16th IEEE Mediterranean

Conference_Location

Yasmine Hammamet

ISSN

2158-8473

Print_ISBN

978-1-4673-0782-6

Type

conf

DOI

10.1109/MELCON.2012.6196482

Filename

6196482