Modulator/Demodulator Approach for a Software Radio

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Software radio basically refers to an ensemble of techniques that permit the reconfiguration of a communication system without the need to change any hardware system element. That goal is to produce communication devices capable of supporting several different services, applications, and standards. In particular one can imagine a given devices that should support several digital mobile telephony standards, service and function by just changing its software. Current devices can provide only one type of standards due to limitations mainly imposed by their analogue technology parts. The software radio as a promising solution for the future of 4G wireless communications, because of its ability to provide flexible architecture, was enabling multi-mode, multi-band, multi-services, and multi-standards devices. This paper presents a multi-modes modulator/demodulator conception for a software radio. For it the modulator design is based to the multi-modes mapper and DDS bloc. The multi-mode mapper generate symbol mapping using a constellation diagram to implement a variety of mapping schemes for multi-mode modulator design. This bloc is used by many modulation schemes.  Example includes quadrature amplitude modulation (QAM), phase shift keying (PSK), and orthogonal frequency division multiplexing (OFDM). The demodulator is based to algorithm for automatic modulation recognition that exploits the flexibility of a software radio. Our algorithm is based to calculate several parameters and used a threshold metric. A purposed approach can be exploited a flexibility for software radio.
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Software Radio; Modulation; Multi-Mode; DDS; QAM; PSK; Recognition Automatic

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J. Mitola, “The Software Radio Architecture”, IEEE Communications Magazine, vol. 33, pp. 26 - 38, May 1995.

TIA/EIA/IS-95, “Mobile station-base station compatibility standard for dual-mode wideband spread spectrum cellular system,” July 1993.

TIA/EIA-cdma2000, “Mobile station-base station compatibility standard for dual-mode wideband spread spectrum cellular system,” July 1999.

European Telecommunications Standards Institute (ETSI), “Radio tansmission and reception.” GSM 5.05, March 1986.

C. Roland, J. Palicot, “A Blind Recognition of the Transmitted, Signal for a Self- Adaptive Re- Configurable Terminal”, in Proc. IST Mobile Communications Summit, Spain, Sept. 2001.

H. Ishii, S. Kawamura, T. Suzuki, M. Kuroda, H. Hosoya, H. Fujishima, “An Adaptive Receiver based on Software Defined Radio Techniques”, in Proc. 12th PIMRC, vol. 2, pp. 120-124, USA, Sep. 2001.

Jouko Vankka, Jaakko Ketola, Johan Sommarek, Olli Väänänen, Marko Kosunen, and Kari A. I. Halonen, “A GSM/EDGE/WCDMA Modulator With On-Chip D/A Converter for Base Stations”, IEEE Transactions on Circuits and Systems: Analog and Digital Signal Processing, vol. 49, no. 10, October 2002.

K. Nolan, L. Doyle, D. Mahony, P. Mackenzie, “Signal space based adaptive modulation for Software Radio”, NTRG, Trinity College.

B. Mobasseri, “Digital Modulation classification using constellation shape”, ECE Department, Villanova University, 1997.

Ferdinand Liedtke, “Adaptive procedure for automatic modulation recognition”, Journal of communication and information technology, 4/2004.

Druckmann, I.; Plotkin, E.I.; Swamy, M.N.S.: “Automatic Modulation Type Recognition”, Electrical and Computer Engineering, 1998. IEEE Canadian Conference on, vol. 1, pp. 65, 1998.

Callaghan, T.G.; Pery, J.L.; Tjho, J.K.: “Sampling and algorithms aid modulation recognition”, Microw. RF, 1985, 24, (9), pp. 117.

Marylin Arndt, Serge Martin, Benoit Miscopein, Valter Bella, Loris Bollea, Enrico Buracchini, “software radio: the challenges for reconfigurable terminals”, Ann. Telecommun., 57, n°7-8, 2002.

Deepak Boppana, Joel Seely, “FPGAs Help Software-Defined Radios Adapt”, October 2004.

Keith E. Nolan, Linda Doyle, Donal O’Mahony, Philip Mackenzie, ‘Modulation Scheme Recognition Techniques for Software Radio on a General Purpose Processor Platform’ Networks and Telecommunications Research Group, Trinity College, Dublin 2, Rep. Of Ireland. 2003.

Nandi, A.K;Azzouz, E. E., “Algorithms for Automatic Recognition of communication Signals” IEEE Trans. Commun. Vol. 46, No. 4,pp. 431-436, Apr. 1998.


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