DocumentCode
3274152
Title
Walsh code assignment and data structure for variable data rate communications
Author
Wang, Michael Mao ; Brown, Tyler ; Fleming, Phil ; Xu, Hua
Author_Institution
QUALCOMM Inc., San Diego, CA, USA
fYear
2005
fDate
13-16 Dec. 2005
Firstpage
425
Lastpage
428
Abstract
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.
Keywords
data communication; variable length codes; Walsh code assignment; data structure; orthogonal variable spreading factor codes; variable data rate communications; Channel coding; Data communication; Data structures; Digital communication; Heuristic algorithms; System performance;
fLanguage
English
Publisher
ieee
Conference_Titel
Intelligent Signal Processing and Communication Systems, 2005. ISPACS 2005. Proceedings of 2005 International Symposium on
Print_ISBN
0-7803-9266-3
Type
conf
DOI
10.1109/ISPACS.2005.1595437
Filename
1595437
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