DocumentCode :
3322397
Title :
Symmetric prime-sequence codes for all-optical code-division multiple-access local-area networks
Author :
Lam, Pham Manh
Author_Institution :
Posts & Telecommun. Inst. of Technol., Hanoi, Vietnam
Volume :
3
fYear :
2002
fDate :
17-21 Nov. 2002
Firstpage :
2061
Abstract :
The construction of a new symmetric code for use in all-optical code-division multiple-access (CDMA) local-area networks (LANs) is described. The new code, which is derived from prime-sequence code allows to design fully programmable all-optical encoder and decoder suitable for low-loss, high-capacity, optical CDMA LANs. It is also shown that the number of codewords of the new code is larger than that of the original prime-sequence code and the 2n prime-sequence code of the same length. Therefore, optical CDMA LANs using the new code can have a larger number of potential subscribers. The cross-correlation characteristic of the new code is also investigated and the BER performance of the code is evaluated. It is shown that the performance of the new code is better than that of the prime-sequence code of the same length.
Keywords :
code division multiple access; codes; correlation methods; decoding; error statistics; optical fibre LAN; BER performance; CDMA; all-optical code-division multiple-access LAN; cross-correlation characteristic; high-capacity LAN; local-area networks; low-loss LAN; prime-sequence code length; programmable all-optical decoder; programmable all-optical encoder; symmetric prime-sequence codes; Bit error rate; Decoding; Delay; Local area networks; Multiaccess communication; Optical design; Optical fiber LAN; Optical losses; Optical signal processing; Optical switches;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Global Telecommunications Conference, 2002. GLOBECOM '02. IEEE
Print_ISBN :
0-7803-7632-3
Type :
conf
DOI :
10.1109/GLOCOM.2002.1188993
Filename :
1188993
Link To Document :
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