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
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;
Conference_Titel :
Intelligent Signal Processing and Communication Systems, 2005. ISPACS 2005. Proceedings of 2005 International Symposium on
Print_ISBN :
0-7803-9266-3
DOI :
10.1109/ISPACS.2005.1595437
