OVSF Code Sharing and Reducing the Code Wastage Capacity in WCDMA

Authors:
Davinder S. Saini;Sunil V. Bhooshan
Affiliations:
Department of Electronics and Communication Engineering, Jaypee University of Information Technology, Waknaghat, Distt. Solan, India;Department of Electronics and Communication Engineering, Jaypee University of Information Technology, Waknaghat, Distt. Solan, India
Venue:
Wireless Personal Communications: An International Journal
Year:
2009

Citing 5
Cited 2

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Reducing internal and external fragmentations of OVSF codes in WCDMA systems with multiple codes

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Blocking probability and channel assignment in wireless networks

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Wideband DS-CDMA for next-generation mobile communications systems

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Dynamic assignment of orthogonal variable-spreading-factor codes in W-CDMA

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Code scattering and reduction in OVSF code blocking for 3G and beyond mobile communication systems

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Fair Single Code and Multi Code Designs for 3G and Beyond CDMA Systems

Wireless Personal Communications: An International Journal

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Abstract

The non quantized nature of user rate wastes the code capacity in Orthogonal Variable Spreading Factor Codes (OVSF) based Code Division Multiple Access (CDMA) systems. The code sharing scheme in multi code CDMA is proposed to minimize the code rate wastage. The scheme combines the unused (wastage) capacity of already occupied codes to reduce the code blocking problem. Simulation results are presented to show the superiority of the proposed code assignment scheme as compared to existing schemes.