Design Of Multi-Modulation Baseband Modulator And Demodulator For Software Defined Radio

• Main Author: Chye, Yin Hui
• Format: Thesis
• Language: English
• Published: 2011
• Subjects: TK1-9971 Electrical engineering. Electronics. Nuclear engineering
• Online Access: http://eprints.usm.my/43245/1/CHYE%20YIN%20HUI.pdf; http://eprints.usm.my/43245/
• Institution: Universiti Sains Malaysia

In contrast to hardware-based radio that only delivers single communication service using particular standard, the software defined radio (SDR) provides a highly reconfigurable platform to integrate various functions for multi-modulation, multiband and multi-standard wireless communication systems. However, this project is only based on multi-modulation SDR, such as 4-PAM, BPSK, QPSK and 16-QAM.The configurable multi-modulation baseband modulator (MMBM) and demodulator (MMBD) are designed using digital signal processing (DSP) algorithms based on common features shared by single-modulation structures, and then implemented into Xilinx Virtex-4 FPGA. Comparing the real-time and simulation results shows that the timings are equivalent, and the sign and magnitude changes are significant.