A new design technique of OTA based M-ary modulator and demodulator

Author

Das, Ratan ; Tamang, Surya Prakash ; Bhanja, Mousumi ; Ghosh, Koushik ; Ray, Bonnie

Author_Institution

Dept. of Electron. & Telecommun. Eng., Bengal Eng. & Sci. Univ., Shibpur, India

fYear

2013

fDate

19-21 Dec. 2013

Firstpage

268

Lastpage

272

Abstract

A new OTA based structure of M-ary modulator & demodulator have been proposed in this paper. Unlike conventional system, A/D D/A converters are not used in the proposed circuit. M-ary ASK modulator and demodulator are synthesized in a systematic and hierarchical manner. As a result, modulation and demodulation with different symbol size, M=2ⁿ where n=1 2, 3, 4 can be performed in this proposed methodology. Theoretical analysis of bit error rate for the QASK and M-ary ASK has been done. The M-ary ASK modulator has been simulated using SPICE. The simulation results confirm the reliability and accuracy of the design.

Keywords

amplitude shift keying; demodulators; error statistics; modulators; operational amplifiers; M-ary ASK demodulator; M-ary ASK modulator; OTA; QASK; SPICE; amplitude shift keying; bit error rate; operational amplifiers; Amplitude shift keying; Conferences; Demodulation; Design methodology; Detectors; Simulation; Amplitude Shift Keying (ASK); M-ary modulation and demodulation; OTA; QASK;

fLanguage

English

Publisher

ieee

Conference_Titel

Microelectronics and Electronics (PrimeAsia), 2013 IEEE Asia Pacific Conference on Postgraduate Research in

Conference_Location

Visakhapatnam

Print_ISBN

978-1-4799-2750-0

Type

conf

DOI

10.1109/PrimeAsia.2013.6731219

Filename

6731219