Experimental Study of DQPSK Modulation on SDR Platform

Eko Marpanaji; Bamba Riyanto Trilaksono; Armein Z. R. Langi; Adit Kurniawan; Andri Mahendra; Thay Liung

doi:10.5614/itbj.ict.2007.1.2.2

Authors

Eko Marpanaji Departement of Electronics Engineering, Yogyakarta State University Karangmalang, Yogyakarta 55281, Telp. +62-274-586168, Indonesia School of Electrical Engineering and Informatics, Institut Teknologi Bandung Jl. Ganesa 10 Bandung 40132, Telp. +62-22-2501661, Fax. +62-22-2534133, Indonesia
Bamba Riyanto Trilaksono School of Electrical Engineering and Informatics, Institut Teknologi Bandung Jl. Ganesa 10 Bandung 40132, Telp. +62-22-2501661, Fax. +62-22-2534133, Indonesia
Armein Z. R. Langi School of Electrical Engineering and Informatics, Institut Teknologi Bandung Jl. Ganesa 10 Bandung 40132, Telp. +62-22-2501661, Fax. +62-22-2534133, Indonesia
Adit Kurniawan School of Electrical Engineering and Informatics, Institut Teknologi Bandung Jl. Ganesa 10 Bandung 40132, Telp. +62-22-2501661, Fax. +62-22-2534133, Indonesia
Andri Mahendra School of Electrical Engineering and Informatics, Institut Teknologi Bandung Jl. Ganesa 10 Bandung 40132, Telp. +62-22-2501661, Fax. +62-22-2534133, Indonesia
Thay Liung School of Electrical Engineering and Informatics, Institut Teknologi Bandung Jl. Ganesa 10 Bandung 40132, Telp. +62-22-2501661, Fax. +62-22-2534133, Indonesia

DOI:

https://doi.org/10.5614/itbj.ict.2007.1.2.2

Abstract

This Paper addresses Differential Quadriphase Shift Keying (DQPSK) modulation implemented on SDR platform for the development of digital data communications based on Software-Defined Radio (SDR). DQPSK modulation performance perceived at Packet Error Rate (PER) is evaluated in terms of Eb/No or S/N ratio, carrier frequency, bit rate, gain, roll-off factor of root Nyquist filter or root raised cosine filter, and payload size from delivered data. Based on these results, the smallest PER could be obtained by setting Eb/No value greater than 20 dB, carrier frequency of at least 0,3 MHz, optimum bit rate of 200 kbps, optimum range payload size of 2000 up to 4000 bytes, and roll-off factor of Nyquist or root-raised cosine filter of 0.4.

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