The performance enhancement of OCDMA System based on New Zero Cross Correlation (ZCC) Code with OFDM Modulation

In order to increase the number of users and data rate, and to reduce the impact of multi access interference (MAI), this study propose the optical code division multiple access (OCDMA) systems with orthogonal frequency division multiplexing modulation (OFDM) based on new zero cross correlation (ZCC) code .The system proposed (OCDMA- new ZCC-OFDM) is compared to the (OCDMA-FCC (Flexible Cross Correlation)-OFDM) in term of SNR and BER. The results showed that the proposed system with the new ZCC code displayed improved performance with an increased number of users up to 120%. The system adopted saved around -3 dBm of power at the receiver. In comparison to (OCDMA-FCC-OFDM) system, this improvement is due to the effect of the good auto/cross correlation properties of new ZCC code.

[1]  M.K. Abdullah,et al.  A new family of optical code sequences for spectral-amplitude-coding optical CDMA systems , 2004, IEEE Photonics Technology Letters.

[2]  Ahmad R. Badlishah,et al.  Performance analysis of optical zero cross correlation in OCDMA system , 2007 .

[3]  Waqas Ahmed Imtiaz,et al.  Cardinality Enhancement of SAC-OCDMA Systems Using New Diagonal Double Weight Code , 2014, Int. J. Commun. Networks Inf. Secur..

[4]  William Shieh,et al.  OFDM for Optical Communications , 2009 .

[5]  Syed Alwee Aljunid,et al.  New design of spectral amplitude coding in OCDMA with zero cross-correlation , 2009 .

[6]  Mohamad Khazani Abdullah,et al.  Performance improvement of hybrid subcarrier multiplexing optical spectrum code division multiplexing system using spectral direct decoding detection technique , 2009 .

[7]  Syed Alwee Aljunid,et al.  Development of OCDMA system based on Flexible Cross Correlation (FCC) code with OFDM modulation , 2015 .

[8]  R. Badlishah Ahmad,et al.  New approach for evaluation of the performance of spectral amplitude coding-optical code division multiple access system on high-speed data rate , 2012, IET Commun..

[9]  M. S. Harris,et al.  Optical fiber communication systems , 1997 .

[10]  Syed Alwee Aljunid,et al.  PIN versus Avalanche photodiode gain optimization in zero cross correlation optical code division multiple access system , 2013 .

[11]  Jawad A. Salehi,et al.  Code division multiple-access techniques in optical fiber networks. II. Systems performance analysis , 1989, IEEE Trans. Commun..