Improved performance of companded OFDM system using non symmetric approach

Mohd. Sabir; Surendra Bohra

doi:10.1117/12.2012291

28 January 2013 Improved performance of companded OFDM system using non symmetric approach

Mohd. Sabir, Surendra Bohra

Proceedings Volume 8760, International Conference on Communication and Electronics System Design; 87601G (2013) https://doi.org/10.1117/12.2012291
Event: International Conference on Communication and Electronics System Design, 2013, Jaipur, India

Abstract

OFDM technology contains several terminologies, transform algorithms for communication engineering. In this way Companding transforms useful under assumption of infinite bandwidth. Under band limited conditions Out of band radiation (OBR) parameter filters out. So bandwidth is a factor that decides the filtering out OBR on the performance of companded OFDM systems. As a result filtering becomes essential under band limited conditions in turn this does deteriorate the system performance significantly. In this paper method proposed to overcome the performance degradation. Method called non symmetric scheme based on the use of curve fitting method to find out a suitable polynomial to be used for decompanding at the receiver. This method indeed improves the performance in comparison to existing symmetric methods when filtering is necessary for band limited conditions.

Citation Download Citation

Mohd. Sabir and Surendra Bohra "Improved performance of companded OFDM system using non symmetric approach", Proc. SPIE 8760, International Conference on Communication and Electronics System Design, 87601G (28 January 2013); https://doi.org/10.1117/12.2012291

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KEYWORDS

Orthogonal frequency division multiplexing

Modulation

Optical filters

Signal to noise ratio

Fourier transforms

Communication engineering

Receivers

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