Implementation of code synchronization for CDMA applications using recursive digital matched filter

Code Division Multiple Access (CDMA) is a widely used multiple access technique in cellular and military communication systems. In Direct Sequence Spread Spectrum (DSSS) communications, a Pseudo Noise (PN) spreading code is typically applied to the data samples prior to transmission. Synchronization...

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Bibliographic Details
Main Authors: Srisakthi, N., Rama Rao, C. V., Vidya, M.
Format: Conference Proceeding
Language:English
Subjects:
component reuse
Decision support systems
digital matched filter
Generators
Matched filters
Military communication
Multiaccess communication
Spread spectrum communication
Synchronization
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Summary:Code Division Multiple Access (CDMA) is a widely used multiple access technique in cellular and military communication systems. In Direct Sequence Spread Spectrum (DSSS) communications, a Pseudo Noise (PN) spreading code is typically applied to the data samples prior to transmission. Synchronization of this unique code with the incoming data samples forms a significant step in the data reception process. Single Dwell Serial Search (SDSS) and Matched Filtering are some of the types of CDMA code synchronization techniques. This paper presents the design and comparison of SDSS technique & Digital Matched Filter (DMF), and shows the effectiveness of DMF for rapid synchronization. It further presents Recursive Digital Matched Filter (RDMF) which reduces resource utilization and the obtained results clearly shows that the proposed RDMF has the characteristics that are highly suitable for code synchronization in CDMA application compared to conventional methods.
DOI:10.1109/ICCSP.2014.6950046