Performance improvement of hybrid subcarrier multiplexing optical spectrum code division multiplexing system using spectral direct decoding detection technique

Sahbudin, Ratna Kalos Zakiah; Abdullah, M.K.; Mokhtar, M.

doi:10.1016/j.yofte.2008.12.003

Cited by 47 publications

(26 citation statements)

References 23 publications

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“…To analyse the system that includes both transmitter and receiver, we assume that the spacing of optical channels is significantly wide so that the effect of cross-talk from the adjacent optical channels is negligible [19]. Furthermore, the subcarrier channels have the same speed.…”

Section: Bit Error Rate Performance Analysismentioning

confidence: 99%

“…where sr P is the effective power of a broadband source at the receiver, K the number of active users, N the DCS code length, K d the data bit of Kth user which is "1" or "0", and K d denotes the modulation data of nth subcarrier channel in the Kth optical code word, which may be expressed as [19] , , 1…”

Section: Bit Error Rate Performance Analysismentioning

confidence: 99%

“…At the RF demodulator, the signal is coherently mixed with a local oscillator 2 cos( ) n w t [19]. As a result, Eq.…”

Section: Bit Error Rate Performance Analysismentioning

confidence: 99%

“…We can ascertain from this fact that the DCS code has a small length, the number of the active users is equal to the code size and the cross-correlation is λ c = 1 or λ c = 0, while the other codes like MQC, MFH and KS have longer lengths. Specific parameter values have been chosen basing upon the results published for these practical codes [14,19]. The BER calculated for the DCS code has been W = 4 for the KS, W = 12 for the MFH, and W = 14 for the MQC code.…”

Section: Numerical Analysismentioning

confidence: 99%

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Enhancement of performance of a hybrid SAC-OCDMA system using dynamic cyclic shift code

H¹,

Aljunid²,

Fadhil³

et al. 2012

Ukr. J. Phys. Opt.

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Abstract.A hybrid subcarrier multiplexing (SCM) technique incorporating spectral amplitude coding and optical code division multiple access (SAC-OCDMA) technologies is investigated using both numerical and simulation methods. The hybrid SCM/SAC-OCDMA system combines the two above schemes in such a way that it is robust to multiple access interference and reveals much enhanced channel data rate. We improve the overall performance of the hybrid SCM/SAC-OCDMA system based on spectral amplitude coding to suppress a number of impairments and improve its sensitivity at a bit error rate of 10 -9 . As a result, the system suggested by us, which is based on a dynamic cyclic shift code, shows better performance when compared with the standard SAC-OCDMA systems employing the conventional code.Keywords: dynamic cyclic shift code, spectral amplitude coding -optical code division multiple access systems, phase induced intensity noise, modified quadratic congruence code, random diagonal code.

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Section: Bit Error Rate Performance Analysismentioning

confidence: 99%

Section: Bit Error Rate Performance Analysismentioning

confidence: 99%

“…At the RF demodulator, the signal is coherently mixed with a local oscillator 2 cos( ) n w t [19]. As a result, Eq.…”

Section: Bit Error Rate Performance Analysismentioning

confidence: 99%

Section: Numerical Analysismentioning

confidence: 99%

See 2 more Smart Citations

Enhancement of performance of a hybrid SAC-OCDMA system using dynamic cyclic shift code

H¹,

Aljunid²,

Fadhil³

et al. 2012

Ukr. J. Phys. Opt.

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“…Considering this advantage, we integrated the SCM into the OCDMA access network to investigate the effect on the system's performance. Related work on the area of hybrid SCM OCDMA has been done by Sahbudin et al (2009Sahbudin et al ( , 2010 where the authors evaluated the performance of this hybrid technique based on different detection techniques. From their results, it is shown that the best performance of the hybrid system is by using the direct detection technique.…”

Section: Introductionmentioning

confidence: 99%

Performance evaluation of broadband access network based on subcarrier multiplexing (SCM): Spectral amplitude coding optical code division multiple access

Nordin¹,

Aljunid²,

Safar³

et al. 2013

Int. J. Phys. Sci.

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A hybrid spectrally amplitude coded (SAC) optical code division multiple access (CDMA) with subcarrier multiplexing (SCM) scheme is a potential candidate for future broadband access solutions in the communication network. In this work, the performance of hybrid technique is investigated. Theoretical derivations are developed based on the zero cross correlation (ZCC) code. The performances are evaluated taking into account the relevant noises such as thermal noise, shot noise and inter modulation noise. Design parameters such as number of optical channels, number of subcarriers, and input power are varied to see their effect on the system performances. Simulation analysis using Optisys simulator is also done and compared to the numerical theoretical results. We measured the performance based on the merits of received power, input power and bit error rates of the received signals. Results revealed that power penalty due to increased number of channels in the hybrid system is lower compared to the conventional OCDMA system, and hence improving the system performance in term of power efficiency. This exhibits the ability of the hybrid system to be one powerful technique as a candidate for future access network.

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Research of Code Construction for OCDMA System

Jin²

2013

Advances in Mechanical and Electronic Engineering

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Performance improvement of hybrid subcarrier multiplexing optical spectrum code division multiplexing system using spectral direct decoding detection technique

Cited by 47 publications

References 23 publications

Enhancement of performance of a hybrid SAC-OCDMA system using dynamic cyclic shift code

Enhancement of performance of a hybrid SAC-OCDMA system using dynamic cyclic shift code

Performance evaluation of broadband access network based on subcarrier multiplexing (SCM): Spectral amplitude coding optical code division multiple access

Research of Code Construction for OCDMA System

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