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access icon free Performance analysis of incoherent PPM-OCDMA networks based on optimised modified prime code for multimedia applications

© The Institution of Engineering and Technology
Received 13/02/2020, Accepted 28/07/2020, Revised 17/07/2020, Published 08/01/2021

This study presents the design analysis and correlation properties of a new spreading code for the incoherent synchronous pulse position modulation-optical code division multiple access (PPM-OCDMA) networks. The proposed code called optimised modified prime code (OMPC), which refers to the modified prime codes (MPCs) family. Additionally, this new code designed at a higher code length, optimised code weight and good correlation characteristics to enhance communication security and improve the bit error rate (BER) performance. In this study, the proposed code is used as source code for different kinds of multimedia services such as data, voice, and video. Furthermore, the characteristics and correlation properties of the OMPC in comparison with the other MPCs families that utilised in the PPM-OCDMA networks are presented. Moreover, for the PPM-OCDMA networks, the effect of OMPC auto- and cross-correlation properties on the multiple access interference (MAI) was investigated. Consequently, the MAI is considered in the BER analysis and calculations. Finally, the results show that the proposed OMPC is better than the other existing codes with respect to the channel capacity and system performance.

Inspec keywords: interference; code division multiplexing; optical communication; channel capacity; telecommunication security; code division multiple access; multimedia communication; codes; pulse position modulation; error statistics

Other keywords: modified prime codes; OMPC; multiple access interference; optimised modified prime code; optimised code weight; incoherent PPM-OCDMA networks; autocorrelation properties; multimedia applications; incoherent synchronous pulse position modulation-optical code division multiple access networks; bit error rate performance; system performance; enhance communication security; MAI; channel capacity; spreading code; good correlation characteristics; cross-correlation properties; higher code length

Subjects: Codes; Error statistics (inc. error probability); Multimedia communications; Electromagnetic compatibility and interference; Multiple access communication; Data security; Error statistics (inc. error probability); Multimedia; Multiplexing and switching in optical communication

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