OFDM using Chaotic Sequence for Adaptive Modulation

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Provided by: International Journal of Engineering Trends and Technology
Topic: Networking
Format: PDF
In a present scenario more and more people started using the communication equipments, the demand for high data rate increased quickly. So here the authors are using OFDM systems that provide large data rates with sufficient robustness to radio channel impairments. In this they have used chaotic communication in OFDM system for secure communication and to improve system performance. Also the adaptive modulation has been applied to the sequence due to dynamic characteristics of the medium. The different fading channels i.e. Rayleigh and Rician in the presence of Additive White Gaussian Noise (AWGN) to analyze the BER & SNR of the different chaotic sequences.
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