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Analysis of satellite on-board time-space-time switching networks with multiple separated space switches

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3 Author(s)
Sang Hyuk Kang ; Korea Adv. Inst. of Sci. & Technol., Taejon, South Korea ; Min Young Chung ; Dan Keun Sung

Advanced satellite on-board baseband switching processors have time-space-time (T-S-T) structures which are similar to the terrestrial switching networks (Sw-Nw). Generally, the satellite systems require higher reliability than ground equipment because of more severe environment and lack of repair. This paper proposes fault-tolerant satellite on-board T-S-T Sw-Nw with multiple separated space switches instead of a single spare switch. The authors analyze the mean time to unreliable operation (MTUO), as a performance and reliability index for the T-S-T systems with multiple separated space switches as well as conventional T-S-T systems. The MTUO varies depending on the threshold level of blocking-probability and the offered traffic. In general, T-S-T Sw-Nw with multiple space switches have better performance and reliability than those with the single space switch, and their performabilities are appreciably improved, especially for one additional spare space switch. This study can be extended to analyze the performance and reliability of entire satellite communication systems including the on-board baseband Sw-Nw, Rx interfaces, and Tx interfaces

Published in:

Reliability, IEEE Transactions on  (Volume:45 ,  Issue: 2 )

Date of Publication:

Jun 1996

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