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Performance Analysis of Coherent and Non-Coherent Modulation Schemes in Faded Wireless Channels using ANN-assisted MRC
| International Journal of Computer Applications |
| Foundation of Computer Science (FCS), NY, USA |
| Volume 160 - Number 5 |
| Year of Publication: 2017 |
| Authors: Gargi Kar Purkayastha |
10.5120/ijca2017913052
|
Gargi Kar Purkayastha . Performance Analysis of Coherent and Non-Coherent Modulation Schemes in Faded Wireless Channels using ANN-assisted MRC. International Journal of Computer Applications. 160, 5 ( Feb 2017), 30-33. DOI=10.5120/ijca2017913052
Abstract
The objective of this paper is to compare the performance of coherent and non-coherent modulation schemes with the use of error correcting codes and Artificial Neural Network (ANN) assisted equalization as an aid to Maximal Ratio Combining (MRC) in order to improve bit error rate (BER) values of demodulated signals in wireless channels. The wireless channels are assumed to have both Gaussian and multipath fading characteristics. The work mainly focuses on the performance check of coherent and non-coherent modulation schemes in Rayleigh fading channel. Modulation technique used in this work are Bipolar Phase Shift Keying (BPSK), which is a coherent scheme and Differential Phase Shift Keying (DPSK), which is a non-coherent scheme in Gaussian and multipath Rayleigh fading channels. The work adopts a few error correction codes and the use of ANN block as part of a MRC set-up and is tested under SNR variation between -10 to 10 dB in coherent and non-coherent Gaussian and multipath fading channels. In order to demonstrate the advantages of modulation schemes that do not require phase synchronization, BER performances of BPSK are compared with the corresponding differential PSK modulation (DPSK).
References
- A. J. Viterbi, Principles of Coherent Communication. New York: McGraw-Hill, 1966.
- W. C. Lindsey and M. K. Simon, Telecommunication Systems Engineering. Englewood Cliffs, NJ: Prentice-Hall, 1973.
- Volker Pauli, Design and Analysis of Low-Complexity Noncoherent Detection Schemes, May 7, 2007.
- S.Haykins:NeuralNetworks A Comprehensive Foundation, Pearson Education, 2nd ed., New Delhi, 2003.
- A. Choudhury and K.K.Sarma: Adaptive Equalization assisted MRC in WirelessChannels, International Conference on Information, Signal and Communication (ICISC-2011), New VallabhVidyanagar, India, Feb.,2011.
- G. K. Purkayastha and K. K. Sarma: “ Maximal Ratio Combining using ANN- Assisted Equalisation in Wireless Channels”, IEEE 2nd National Conference on Computational Intelligence and Signal Processing (CISP-2012), pp. 1-4, Guwahati, India, March, 2012.
- G. K. Purkayastha and K. K. Sarma: “ Maximal Ratio Combining using Coding and ANN- Assisted Equalisation in Wireless Channels”, 57th Annual Technical Session Assam Science Society, pp. 1-5, Guwahati, India, March, 2012.
- T. S. Rappaport: “Wireless Communications: Principles and Practice, Second Edition,” Pearson Education, 7th Indian Reprint, 2004.
- J. G. Proakis: “Digital Communications, 4th ed.,” McGraw Hill Publication,2001.
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