DocumentCode :
2490193
Title :
Development of a Prototype Direct Digital Synthesized QAM Modulator using Code Composer Studio Forapplication in Mobile Communication Systems
Author :
Prasad, S. ; Sanyal, S.K.
Author_Institution :
Dept. of E.T.C.E., Jadavpur Univ., Kolkata
fYear :
2006
fDate :
19-21 Dec. 2006
Firstpage :
72
Lastpage :
75
Abstract :
With the increase in the spectral congestion and dramatic enhancement in the numbers of mobile telephone users, many approaches are being considered to reduce the bandwidth requirement of each user. One approach is the use of quadrature amplitude modulation (QAM) for mobile radio applications. QAM multilevel modulation can offer an attractive solution to current bandwidth restriction in microcellular networks. The conventional method of QAM synthesis is analog and quite cumbersome. In this paper an attempt has been taken for the experimental synthesis of 8-QAM using the principle of direct digital synthesis (DDS) with the help of digital signal processor (DSP) TMS320VC5416. The synthesized QAM signal has been generated by writing a program in the C-source file of Code Composer Studio (CCStudio) Integrated Development Environment (IDE). Experimental results for two sets of tri-bit modulating sequence are included
Keywords :
direct digital synthesis; mobile communication; modulators; quadrature amplitude modulation; C-source file; CCStudio Integrated Development Environment; Code Composer Studio; QAM multilevel modulation; TMS320VC5416; code composer studio; digital signal processor; direct digital synthesis; direct digital synthesized QAM modulator; microcellular networks; mobile communication systems; mobile radio applications; mobile telephone users; quadrature amplitude modulation; spectral congestion; tri-bit modulating sequence; Bandwidth; Digital modulation; Land mobile radio; Mobile communication; Modulation coding; Network synthesis; Prototypes; Quadrature amplitude modulation; Signal synthesis; Telephony;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electrical and Computer Engineering, 2006. ICECE '06. International Conference on
Conference_Location :
Dhaka
Print_ISBN :
98432-3814-1
Type :
conf
DOI :
10.1109/ICECE.2006.355293
Filename :
4178411
Link To Document :
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