Digital filter bank implementation using multirate techniques for spreading codes and rate transition techniques in spread spectrum

Rajiv, Mohan David and Shama, Kumara and Nayak, Prabhakar K (2012) Digital filter bank implementation using multirate techniques for spreading codes and rate transition techniques in spread spectrum. In: Proceedings of International conference on Information Communication & Embedded Systems , February 24 & 25, 2012, S.A Engineering College .

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Abstract

Multirate signal processing plays a vital role in the area of digital communication for improving the data rate. This paper covers a board area of topic in Multirate signal processing and their significant contribution in the area of digital communication. Through this paper we have simulated filter banks with varied sampling rates for different spreading sequence such as PN sequence, Gold sequence, Kasami sequence and Barker sequence. The filter bank for these spreading sequences consists of an analysis and synthesis section. A comparative study is made for multiple factors of sampling rates and their time domain and frequency domain characteristics are implemented. Here the sampling rate conversion is performed entirely in the digital domain. Sampling rate conversion done in digital domain helps in avoiding signal distortion and quantization effects in the process of analog to digital conversion. This application of sampling rate conversion in multirate signal processing is being included in the implementation of digital filter banks and quadrature mirror filters. We have also reviewed the autocorrelation and cross correlation properties of spreading codes and also rate transition techniques have been adopted which helps in increasing the overall system performance of the spread spectrum due to the increase in its processing gain.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Multirate, Pn sequence, Gold sequence, Kasami sequence, Barker sequence, Filter banks and Rate Transition.
Subjects: Engineering > MIT Manipal > Electronics and Communication
Depositing User: MIT Library
Date Deposited: 03 Mar 2012 04:02
Last Modified: 08 Mar 2012 04:17
URI: http://eprints.manipal.edu/id/eprint/3408

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