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Performance Analysis of Pseudo-Orthogonal Codes at 10 Gbps for 16 Users in Free Space
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Free Space Optics (FSO) takes a line-of-sight approach in telecommunications, in which modulated infrared laser light is transmitted through the air. A need was felt to design FSO system having more powerful source, for longer transmission system as well as to tab the full potential of available optical bandwidth. In the previous work, authors used various OCDMA techniques for multiplexing to achieved a permissible BER > 10-5and a speed less than 5 Gbps. This paper demonstrates the Optical Code Division Multiple Access Pseudo-orthogonal ―Flattened matrix codes in Free Space Optical Communication. In the present work authors design a system in which high speed information at 10 Gbps bit rate is successfully broadcasted from transmitter station to the receiver station at the link range of 500m through the Free Space channel at wavelength of 1550nm using an OCDMA pseudo-orthogonal encoder and decoder. The results are discussed in terms of bit error rate and quality factor with maximum number of users that can withstand by this communication system. This system can support sixteen simultaneous users and at an acceptable bit error rate e-9 less.
Keywords
Bit Error Rate (BER), Free Space Optics (FSO), Optical Code Division Multiple Access (OCDMA), Pseudo-Orthogonal Codes.
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