TY - JOUR
T1 - Performance Analysis of Multicode OCDM Networks Supporting Elastic Transmission With QoS Differentiation
AU - Farghal, Ahmed E.A.
AU - Shalaby, Hossam M.H.
AU - Kato, Kazutoshi
AU - Pokharel, Ramesh K.
N1 - Funding Information:
This work was supported by the Egyptian Ministry of Higher Education. The associate editor coordinating the review of this paper and approving it for publication was W. C. Kwong.
Publisher Copyright:
© 2015 IEEE.
PY - 2016/2/1
Y1 - 2016/2/1
N2 - A multicode optical code-division multiplexing (OCDM) is proposed to support the dynamic changes in the requested traffic demand in OCDM networks by adapting the number of allocated codes according to the requested transmission rate. In order to support time-variant data rates and multiservice transmissions; a multicode variable-weight 2D one-coincidence frequency hopping code/optical orthogonal code (OCFHC/OOC) is employed as the signature code in the proposed system. Two multicode assignment methods, namely, random multicode assignment (RMA) policy and uniform multicode assignment (UMA) policy, are presented. For each code assignment method, we drive the probability density function (pdf) of the number of active codes in each wavelength group. The bit error probability (BEP), the probability of degradation, and the blocking probability are derived as network performance key parameters. The proposed system has a simplified routing and code assignment process with a lower blocking probability. Our numerical results indicate that the network teletraffic capacity and blocking probability can be improved significantly using UMA policy and call admission control.
AB - A multicode optical code-division multiplexing (OCDM) is proposed to support the dynamic changes in the requested traffic demand in OCDM networks by adapting the number of allocated codes according to the requested transmission rate. In order to support time-variant data rates and multiservice transmissions; a multicode variable-weight 2D one-coincidence frequency hopping code/optical orthogonal code (OCFHC/OOC) is employed as the signature code in the proposed system. Two multicode assignment methods, namely, random multicode assignment (RMA) policy and uniform multicode assignment (UMA) policy, are presented. For each code assignment method, we drive the probability density function (pdf) of the number of active codes in each wavelength group. The bit error probability (BEP), the probability of degradation, and the blocking probability are derived as network performance key parameters. The proposed system has a simplified routing and code assignment process with a lower blocking probability. Our numerical results indicate that the network teletraffic capacity and blocking probability can be improved significantly using UMA policy and call admission control.
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U2 - 10.1109/TCOMM.2015.2512922
DO - 10.1109/TCOMM.2015.2512922
M3 - Article
AN - SCOPUS:84962440441
SN - 1558-0857
VL - 64
SP - 741
EP - 752
JO - IEEE Transactions on Communications
JF - IEEE Transactions on Communications
IS - 2
M1 - 7368162
ER -