Walsh code assignment and data structure for variable data rate communications

In digital communication systems, variable-length Walsh codes, also called orthogonal variable spreading factor codes, are used to support simultaneous variable-rate data transmission. This paper describes algorithms for dynamic variable-length Walsh code assignment. Optimal assignment criterion is...

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Bibliographic Details
Main Authors: Wang, M.M., Brown, T., Fleming, P., Hua Xu
Format: Conference Proceeding
Language:English
Subjects:
Channel coding
Data communication
Data structures
Digital communication
Heuristic algorithms
System performance
Online Access:Request full text
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Summary:In digital communication systems, variable-length Walsh codes, also called orthogonal variable spreading factor codes, are used to support simultaneous variable-rate data transmission. This paper describes algorithms for dynamic variable-length Walsh code assignment. Optimal assignment criterion is derived. An efficient data structure for maintaining variable-length Walsh codes is introduced. The benefits of code re-allocation are also studied. Performance is evaluated via simulation.
DOI:10.1109/ISPACS.2005.1595437