Implementation of 16-Bit Qam Using Texas Instruments

Rauf Magrabi; Syed Abdur

doi:10.37591/jomsd.v2i2.5220

Abstract

In this paper, an implementation of 16-bit QAM is performed where there is a high use of Digital Video Broadcasting Cable (DVB-C), as there is increase in the usage the bandwidth requirement for each user is mutually increasing. Due to this, there is spectral congestion caused and drastic improvements have been taken in the field of communications. QAM multilevel modulation can offer an attractive solution to current bandwidth restriction in microcellular networks. The conventional method of QAM synthesis is analog. In this paper, an attempt has been taken for the experimental synthesis of 16-bit QAM by using the principle of Direct Digital Synthesis (DDS) with the help of Digital Signal Processor (DSP) TMS320C6713. 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 16-bit QAM modulating sequence demodulating sequence are included.