Title: Programmable Common Baseband Modulator for Software Defined Radio system

Authors: Indranil Hatai; Indrajit Chakrabarti

Addresses: Electronics and Electrical Communication Engineering, Indian Institute of Technology, Kharagpur 721302, India. ' Electronics and Electrical Communication Engineering, Indian Institute of Technology, Kharagpur 721302, India

Abstract: In Software Defined Radio (SDR), a single hardware structure can be reused to conform to different standards by simply changing some parameter. A low-power, high-speed, low-area parameter-controlled Common Baseband Modulator (CBM) architecture has been proposed in this paper. Using control parameters, the proposed CBM can be configured to support Gaussian Minimum Shift Keying (GMSK) as well as Frequency Modulation (FM) schemes. The design, which is fully pipelined, can operate at a maximum data rate of 276 Mbps. The proposed CBM consumes maximum dynamic power of 108.41 mW when running at 100 Mbps and using only 22.7 kilo equivalent gates.

Keywords: SDR; software defined radio; FPGA; GMSK modulator; FM modulator; CBM; common baseband modulator; Gaussian minimum shift keying; frequency modulation; field programmable gate arrays.

DOI: 10.1504/IJSISE.2011.043775

International Journal of Signal and Imaging Systems Engineering, 2011 Vol.4 No.3, pp.142 - 152

Received: 06 Aug 2010
Accepted: 29 Mar 2011
Published online: 13 Mar 2015 *

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