Share Email Print
cover

Proceedings Paper

The impact of fiber chromatic dispersion of a wavelength hopping time spreading optical CDMA system
Author(s): Satya Prasad Majumder; Afreen Azhari; Hossam E. Haider
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

A theoretical analysis is presented to evaluate the impact of fiber chromatic dispersion on the bit error rate (BER) performance of a two dimensional wavelength hopping time spreading optical CDMA system. A bipolar-unipolar coding scheme has been considered for 7 chip m-sequence and 31 and 127 chip Gold sequence considering a standard single mode fiber. The numerical results show that there is an order of magnitude increase in BER due to the effect of dispersion. For 100 simultaneous users, at a received power of -4dbm, average BER occurs at about 10-6 and 10-12 with and without chromatic dispersion respectively for 7-chip m-sequence at a chip rate of 10 Gchip/sec for a fiber length of 245.05 km, with dispersion coefficient of 16 ps/km-nm. For 31-chip Gold sequence, the corresponding average BER is of the order of 10-17 and 10-21 with and without dispersion respectively. It is further noticed that for 10 simultaneous users, the system operating at a chip rate of 10Gchip/sec, suffers a power penalty of 9.15 dB for 7-chip m-sequence and 1dB for 31-chip Gold sequence at a BER of 10-9.

Paper Details

Date Published: 20 October 2006
PDF: 8 pages
Proc. SPIE 6353, Optical Transmission, Switching, and Subsystems IV, 63531D (20 October 2006); doi: 10.1117/12.688675
Show Author Affiliations
Satya Prasad Majumder, Bangladesh Univ. of Engineering and Technology (Bangladesh)
Afreen Azhari, Military Institute of Science and Technology (Bangladesh)
Hossam E. Haider, Military Institute of Science and Technology (Bangladesh)


Published in SPIE Proceedings Vol. 6353:
Optical Transmission, Switching, and Subsystems IV
Chang Soo Park; Shizhong Xie; Curtis R. Menyuk; Ken-ichi Kitayama, Editor(s)

© SPIE. Terms of Use
Back to Top