IMPROVEMENTS IN ERROR IMMUNITY OF SYNCHRONOUS DIGITAL HIERARCHY (SDH) POINTERS | ||||
| The International Conference on Electrical Engineering | ||||
| Article 6, Volume 2, 2nd International Conference on Electrical Engineering ICEENG 1999, November 1999, Page 44-51 PDF (1.74 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/iceeng.1999.62274 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| Hamdy ElTaweel1; Refat ElZonfoly2; Ali ElMoghazy3; Hamdy ElMekaty4 | ||||
| 1Eng. Hamdy ElTaweel, Egyptian Army. | ||||
| 2Ass. Prof. Dr. Refat ElZonfoly, Telecommunications National Institute, Cairo, Egypt. | ||||
| 3Ass. Prof. Dr. Ali ElMoghazy, Egyptian Army. | ||||
| 4Prof. Dr. Hamdy ElMekaty, Faculty of Engineering, ElMansoura University. | ||||
| Abstract | ||||
| In this paper, a modified way to improve the immunity of the SDH pointers against communication errors is proposed. The compatibility between the current systems and those utilizing the proposed way is considered. A simulation program for a communication channel utilizing the SDH technique is developed. The simulation results for both the International Telecommunication Union Tele-communication standardization section (ITU-T) recommended way and the modified one are presented. The obtained result asserts that the proposed way is superior to the ITU-T recommended one. A mathematical derivation for the improvement factor of the probability to interpret an erroneous pointer in the SDH network utilizing the ITU-T recommendations and that utilizing the proposed way is carried out in both the steady state and at the beginning of new data. | ||||
| Keywords | ||||
| SDH; SONET; Improvements; immunity; Pointers | ||||
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