A secure spreader/Despreader for code division multiple access applications

Author

Mahfouz, A. ; Shehata, K. ; Hanna, M.

Author_Institution

Electron. Dept., N.T.I, Cairo

fYear

2008

fDate

7-9 Nov. 2008

Firstpage

1

Lastpage

6

Abstract

This paper introduces the use of combined decimal sequences in a code division multiple access (CDMA) system. It presents the design and implementation of a DS-CDMA base-band module on an FPGA. The designed transceiver employs a combined D-sequence generator as a spreader/despreader unit. The transceiver have been designed using VHDL design entry method and simulated using Mentor Graphics FPGA Adv. Pro. The design is downloaded on Altera EPF10K10LC84 chip; it consumes 14% of the chip and operates at 128 MHz. The proposed transceiver design is implemented for eight users and can be extended for any number of users.

Keywords

code division multiple access; field programmable gate arrays; hardware description languages; transceivers; Altera EPF10K10LC84 chip; DS-CDMA base-band module; Mentor Graphics FPGA Adv. Pro; VHDL design entry; code division multiple access; combined decimal sequence generator; secure spreader/despreader; transceiver; Autocorrelation; Circuits and systems; Design methodology; Field programmable gate arrays; Gold; Graphics; Multiaccess communication; Random sequences; Spread spectrum communication; Transceivers; D-sequence; FPGA; Spread Spectrum; Walsh codes; base-band CDMA;

fLanguage

English

Publisher

ieee

Conference_Titel

Signals, Circuits and Systems, 2008. SCS 2008. 2nd International Conference on

Conference_Location

Monastir

Print_ISBN

978-1-4244-2627-0

Electronic_ISBN

978-1-4244-2628-7

Type

conf

DOI

10.1109/ICSCS.2008.4746945

Filename

4746945