Title :
Design and Simulation of Two-Channel DDC in Satellite Cellular Integrated System
Author :
Chunli Kong ; Xiangning Fan ; Zhiyuan Xu ; Hao Zheng
Author_Institution :
Sch. of Inf. Sci. & Eng., Southeast Univ., Nanjing, China
Abstract :
With the operation being maturity of the GPS satellite navigation system, integrated navigation and positioning systems such as GPS/Galileo satellite system combined with cellular mobile communication system are being applied and developed. Aiming at the multiband digital signals after A/D direct bandpass sampling in these integrated navigation and positioning systems, a simulation model of two-channel DDC (Digital Down- Conversion) by using Matlab/Simulink is designed in this paper. NCO, CIC and HB modules of the DDC are analyzed and designed in detail. With the given simulation conditions based on the integrated navigation and positioning system of Galileo and WCDMA, the simulation results show that the combined signals can effectively be separated and the transmitter data accurately restored.
Keywords :
Global Positioning System; cellular radio; mobile communication; satellite communication; A/D direct bandpass sampling; CIC; GPS satellite navigation system; Galileo satellite system; HB module; NCO; WCDMA; cellular mobile communication system; digital down-conversion; multiband digital signal; satellite cellular integrated system; two-channel DDC; Band pass filters; Filtering theory; Finite impulse response filter; Low pass filters; Multiaccess communication; Spread spectrum communication;
Conference_Titel :
Wireless Communications Networking and Mobile Computing (WiCOM), 2010 6th International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-3708-5
Electronic_ISBN :
978-1-4244-3709-2
DOI :
10.1109/WICOM.2010.5600611
