Record Details

<p><strong>Impact and Mitigation of Noise in Optical 2D Techniques Using (<em>n, w, λ<sub>a</sub>, λ<sub>c</sub></em>) Optical Orthogonal Codes for Optical CDMA</strong></p>

Online Publishing @ NISCAIR

View Archive Info
 
 
Field Value
 
Authentication Code dc
 
Title Statement <p><strong>Impact and Mitigation of Noise in Optical 2D Techniques Using (<em>n, w, λ<sub>a</sub>, λ<sub>c</sub></em>) Optical Orthogonal Codes for Optical CDMA</strong></p>
 
Added Entry - Uncontrolled Name Bharti, Manisha ; National Institute of Technology, Delhi
 
Uncontrolled Index Term Optical orthogonal codes;Multiple access interference; SQC/OCC; PC; SPS; Optical hard limiter (OHL); Coherent detection
 
Summary, etc. <p style="text-align: justify;">The performance of two dimensional (2D) hybrid wavelength/time optical code division multiple access (OCDMA) system is affected severely by the presence of noise at its physical layer. This noise is present in the guise of multiple access interference (MAI) and beat noise in OCDMA systems and degrades its performance. In this paper an attempt has been made to analyze the impact of noise in OCDMA system using four different coding schemes. The mitigation of noise is then done by using either optical hard limiter (OHL) or by utilizing coherent detection for all these schemes. These codes use synchronized quadratic congruence sequences (SQC), synchronized prime procession (SPP), prime code sequences (PC) and synchronized prime sequences (SPS) for wavelength hopping and (<em>n, w, λ<sub>a</sub>, λ<sub>c</sub></em>) one dimensional optical orthogonal codes for time spreading respectively. The code with heavier code weight or lower values of auto- and cross- correlation function performs the best with noise mitigation techniques. Investigations reveal that SQC/OOC coding scheme in combination with OHL and PC/OOC scheme in combination with coherent detection outperforms in comparison to other techniques.</p>
 
Publication, Distribution, Etc. Indian Journal of Pure & Applied Physics (IJPAP)
2021-08-12 16:06:12
 
Electronic Location and Access application/pdf
http://op.niscair.res.in/index.php/IJPAP/article/view/28794
 
Data Source Entry Indian Journal of Pure & Applied Physics (IJPAP); ##issue.vol## 59, ##issue.no## 8 (2021): Indian Journal of Pure & Applied Physics
 
Language Note en
 
Terms Governing Use and Reproduction Note Except where otherwise noted, the Articles on this site are licensed under Creative Commons License: CC Attribution-Noncommercial-No Derivative Works 2.5 India © 2015. The Council of Scientific &amp; Industrial Research, New Delhi.