• Abhishek Kumar Yadav
• MR. VISHAL YADAV
• DR. AJAY KUMAR MAURYA
• Prof. RAVI PRAKASH

This article explores how processing gain is an efficient parameter in Direct-sequence spread spectrum communication, and also impacts the comparative performance of coded and uncoded optical IDMA systems. Basically the IDMA's qualities as the sole method for user separation, it adeptly mitigates multiple access interference (MAI), inter-symbol interference (ISI), and other related factors. In assessing the performance of OIDMA systems, interleavers are pivotal. This article introduces random interleavers into both coded and uncoded OIDMA systems one by one, and conducts a qualitative comparison of their impact. In every digital communication system, coding stands as a fundamental constraint. Convolutional codes serve the purpose of correcting burst errors in noisy communication channels. The output of the optical signal received by the O-IDMA system's receiver is a crucial determinant of its performance. In this context, the detection process utilizing Avalanche Photodiode for the O-IDMA system is thoroughly examined and analyzed. This paper utilizes simulations to investigate optical coded and uncoded OIDMA systems employing the minimum loss optical window, specifically at a wavelength of 1553nm, for transmission. The results regarding the probability of bit error are observed using MATLAB. This article explores the variation of processing gain, akin to spread length, and observes the probability of error results for different numbers of users employing random interleavers.

Optical IDMA (O-IDMA), Convolutional codes, Code Rate, Random Inter-leaver (RI), Direct Sequence Spread Spectrum (DSS), Processing gain (PG).

"Comparative Analysis of Coded and Uncoded OIDMA using Random Inter-leaver with Varying Processing Gain", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.11, Issue 7, page no.f257-f262, July-2024, Available :http://www.jetir.org/papers/JETIR2407537.pdf

"Comparative Analysis of Coded and Uncoded OIDMA using Random Inter-leaver with Varying Processing Gain", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.11, Issue 7, page no. ppf257-f262, July-2024, Available at : http://www.jetir.org/papers/JETIR2407537.pdf