TURBULENT CHANNEL OVER FREE SPACE OPTICAL NETWORK FOR CDMA WIRELESS COMMUNICATION
This project analysis theoretical and Matlab experimental performance study to characterize the transmission of code-division-multiple-access-based wireless signals over a free-space optical (FSO) system.
Free space optical (FSO) communication requires the information signal to propagate in the line of sight between transmitter and receiver at optical frequencies such as GHz to THz. The information signal is first modulated on to an optical carrier and is propagated through free space, where due to degrading factors such as absorption, scattering and atmospheric turbulence the signal power is adversely affected before being received at the receiver.
Presently mobile cellular and communication system (MCCS) technology based on code division multiple access (CDMA) for its data and voice communication requirement. While operating in remote areas the real-time information sharing acquires the utmost importance. Due to the diverse environmental conditions in such areas sometimes it becomes difficult to share real-time information. The issues such as lack of connectivity arise frequently, which hampers the functioning of the system. This Matlab design focuses on suggesting measures to improve by analyzing the below methods.
• SISO Link in FSO with OOK
• SISO Link with CDMA in FSO for Different Users
• SISO Link with CDMA in FSO for Different Code Lengths
• SIMO with CDMA in FSO
• MIMO with CDMA in FSO
• MIMO with CDMA in FSO
• SISO Vs MIMO with CDMA in FSO
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