Performance Analysis of QMF Filter Bank For Wireless Voip in Pervasive Environment

Author(s): Ravindra Luhach, Chandra K. Jha, Ashish K. Luhach*.

Journal Name: Recent Patents on Computer Science

Volume 12 , Issue 4 , 2019

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Abstract:

Background: Voice over Internet Protocol (VoIP) has emerged as one of the most significant technology in the field of communication and evolved as a substitute to the conventional communication method as the Public Switched Telephone Network (PSTN). Along with the advantages such as scalability and security, VoIP has some threats such as voice quality and interference that must be dealt with. The voice quality in VoIP is degraded when transmitted over a computer network due to delay, jitter and packet loss etc. Packet loss is one of major reasons for the signal quality degradation.

Objective: In this research article, Quadrature Mirror Filter Bank (QMF) has been implemented in wireless VoIP system to enhance the quality of the signals transmitted.

Results: The performance has been evaluated under varying network conditions of packet loss.

Conclusion: Significant improvement has been observed in the quality of VoIP signal.

Keywords: VoIP, QMF, PSTN, packet loss, MOS, signal quality degradation.

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Article Details

VOLUME: 12
ISSUE: 4
Year: 2019
Page: [349 - 353]
Pages: 5
DOI: 10.2174/2213275911666181018101737
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