Performance improvement of spectral amplitude coding-optical code division multiple access systems using NAND detection with enhanced double weight code |
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| Authors: | Nasim Ahmed Syed Alwee Aljunid R Badlishah Ahmad Hilal A Fadhil Mohd Abdur Rashid |
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| Institution: | 2. School of Computer and Communication Engineering, University Malaysia Perlis, 02600, Arau Perlis, Malaysia
1. School of Electrical Systems Engineering, University Malaysia Perlis, 02600, Arau Perlis, Malaysia
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| Abstract: | The bit-error rate (BER) performance of the spectral amplitude coding-optical code division multiple access (SACOCDMA) system
has been investigated by using NAND subtraction detection technique with enhanced double weight (EDW) code. The EDW code is
the enhanced version of double weight (DW) code family where the code weight is any odd number and greater than one with ideal
cross-correlation. In order to evaluate the performance of the system, we used mathematical analysis extensively along with
the simulation experiment. The evaluation results obtained using the NAND subtraction detection technique was compared with
those obtained using the complementary detection technique for the same number of active users. The comparison results revealed
that the BER performance of the system using NAND subtraction detection technique has greatly been improved as compared to
the complementary technique. |
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