Title :
AAL type 1 for real-time video transmission over ATM networks
Author :
Andreatos, A. ; Kalivas, D.
Author_Institution :
Hellenic Air Force Acad., Attika, Greece
Abstract :
This article describes the design and implementation of an ATM Adaptation Layer (AAL) type 1 transceiver for the transmission of Constant Bit Rate (CBR) signals over ATM networks. The functions of the AAL satisfy the ITU-T Recommendations I.362 and I.363. It is mainly responsible for the Segmentation and Reassembly (SAR) of user information, smoothing the variable cell delay (jitter), detecting lost and missequenced cells and recovering the source clock at the receiver side. The hardware implementation is based on FPGAs. The clock recovery is based on the FIFO filling level observation method
Keywords :
asynchronous transfer mode; real-time systems; telecommunication networks; transceivers; visual communication; AAL type 1 transceiver; ATM Adaptation Layer; ATM network; Constant Bit Rate signal; FIFO filling level; FPGA hardware; Segmentation and Reassembly; clock recovery; jitter; missequenced cell detection; real-time video transmission; variable cell delay smoothing; Bit rate; Clocks; Delay; Field programmable gate arrays; Filling; Hardware; Jitter; Signal design; Smoothing methods; Transceivers;
Conference_Titel :
Electronics, Circuits, and Systems, 1996. ICECS '96., Proceedings of the Third IEEE International Conference on
Conference_Location :
Rodos
Print_ISBN :
0-7803-3650-X
DOI :
10.1109/ICECS.1996.584478
