1 AIT Asian Institute of Technology

Study on multiple-layered error correction for SDH systems

AuthorVijayarangam, S.
Call NumberAIT Thesis no. TC-94-11
Subject(s)Telecommunication systems

NoteA thesis submitted in partial fulfillment of the reqt1irement for the degree of Master of Engineering, School of Engineering and Technology
PublisherAsian Institute of Technology
AbstractCurrent CCIIT recommendations do not suggest error correction schemes for SDH based systems, and the recovery of bit errors inclucling error bursts and short interruptions are entrusted to higher layer functions which the customers handle. Hence, if it is possible to correct bit errors not only in the overheads for network management, but also in the customer information field called the payload of a SDH frame, it will satisfy the customer need for reliable high speed data transfer, including in the transport of A TM cells over SDH. This research study proposes a new error correction scheme which can correct bit errors in the whole of SDH frame, using the Product Codes and the CRC, maintaining the cunent SDH frame format. The .effect of the error correction schemes over multiple layers of SDH is also analyzed. The simulated results of the schemes show the effectiveness for error correction to both random and bursty bit errors, the existence of an optimum matrix format, and the possibility of a virtually error free .SDH based connection.
Year1994
TypeThesis
SchoolSchool of Engineering and Technology (SET)
DepartmentOther Field of Studies (No Department)
Academic Program/FoSTelecommunications (TC)
Chairperson(s)Takahashi, Kiyoshi
Examination Committee(s)Sharma, A.B. ;Ahmed, Kazi Mohiuddin ;O'Farrell, Timothy
Scholarship Donor(s)Finnish International Development Agency (FINN ID A);
DegreeThesis (M.Eng.) - Asian Institute of Technology, 1994


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