Preliminary Study Of The Link And Network Of Satellite Optical Cdma System

Having high quality in high-capacity, anti-jamming, privacy etc, inter-satellite optical CDMA communication technology is promising. As the address code, code or encode multi-user detecting etc developing, it's impossible to use optical CDMA technology into satellite communication. This dissertation does research on the problem.By calculating parameters including the link length, the azimuth angle, the elevation, the optical power that the inter-satellite optical CDMA communication system will receive, the variation range of the azimuth angle and the elevation from the optical antenna of ATP are understood well.By analyzing the factors to impact Bit-Error-Rate(BER) from the received power, multi-user disturbing, background noise, wavelength, bit rate etc, measures to guarantee high performances of the system are obtained, especially those for smoothing the fluctuation of the received optical power from host platform vibration. All those offer important design basis for satellite optical communication.Then, this paper studies how to apply optical CDMA in satellite communication network, studies for intra-satellite optical communication network, satellite optical communication access network, and satellite optical communication backbone network separately, it is worth to going further.For demonstrating and analyzing the performances of satellite optical CDMA communication system, this paper design the fast frequency hop Wireless Optical CDMA (W-OCDMA) experimental system, the results from the experiment indicate that the system performance are high. Considering the bit-rate up to 622Mbps, it is perfect to implement the W-OCDMA in high speed communication system. It lays the foundation to study OCDMA communication system further.