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International Journal of Computer Network and Information Security(IJCNIS)

ISSN: 2074-9090 (Print), ISSN: 2074-9104 (Online)

Published By: MECS Press

IJCNIS Vol.8, No.4, Apr. 2016

Implementation of SRRC Filter in Mobile WiMax with DWT Based OFDM System

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Author(s)

Harpreet Kaur, Manoj Kumar, Ajay K. Sharma, Harjit P. Singh

Index Terms

DWT-OFDM;pulse shaping;oversampling rate;roll-off factor;Root Raised Cosine;mobile WiMax

Abstract

Pulse shaping filter when applied to the symbols generated for transmission in a bandwidth limited systems allow for bandwidth containment that reduces the Inter-Symbol Interference (ISI) arising from multipath signal reflections which further minimizes the probability of errors at the receiver. Wavelets encompass the advantages of transforming and mapping data onto orthogonal subcarriers with optimal flexibility as well as less complexity which leads to increase the bandwidth efficiency of an Orthogonal Frequency Division Multiplexing (OFDM) system. In this paper Square Root Raised Cosine (SRRC) a pulse shaping technique when applied to Discrete Wavelet Transform (DWT) based OFDM system in mobile WiMax is simulated and its performance analysis in terms of Bit Error rate (BER) as a function of Signal to Noise Ratio (SNR) is investigated for various modulation schemes under AWGN channel. The results obtained show that SRRC filter offers to significantly improve BER for the given SNR and enhance the performance of physical layer in Mobile WiMax. The performance measurements and analysis is done in the simulation developed in MATLAB. 

Cite This Paper

Harpreet Kaur, Manoj Kumar, Ajay K. Sharma, Harjit P. Singh,"Implementation of SRRC Filter in Mobile WiMax with DWT Based OFDM System", International Journal of Computer Network and Information Security(IJCNIS), Vol.8, No.4, pp.62-69, 2016.DOI: 10.5815/ijcnis.2016.04.08

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