Title :
Realization of an ATM-based HFC demonstrator with high upstream capacity
Author :
Sierens, Chris ; Botte, Chris ; Verhaert, Michel ; Boettle, Dietrich ; Wahl, Stefan
Author_Institution :
Res. Div., Alcatel Telecom, Antwerp, Netherlands
Abstract :
Within the framework of the ACTS project ATHOC (ATM applications on Hybrid Optical fiber Coax), cable TV modems and hybrid fibre coax (HFC) systems have been realized, demonstrating the basic technologies which are common to the different HFC standardisation work-groups. The ATHOC prototypes employ 64-QAM modulation for the downstream and burst mode QPSK modulation for the upstream transmission, respectively, in order to achieve 40 Mb/s and 3 Mb/s. Time division multiple access (TDMA) is the method which is implemented to give all users access to the shared medium of the tree-and-branch CATV network. The article clarifies the HFC system concept which was implemented. The functions of the access network adaptation in the headend and the access network termination at the user´s premises are described
Keywords :
asynchronous transfer mode; cable television; channel capacity; coaxial cables; modems; network topology; optical fibre subscriber loops; quadrature amplitude modulation; quadrature phase shift keying; television networks; time division multiple access; 3 Mbit/s; 40 Mbit/s; 64-QAM; ACTS project; ATHOC; ATM applications; ATM-based HFC demonstrator; HFC standardisation; HFC system; TDMA; access network adaptation; access network termination; burst mode QPSK; headend; high upstream capacity; hybrid optical fiber coax; modem; time division multiple access; tree-and-branch CATV network; upstream transmission; Asynchronous transfer mode; Bandwidth; Cable TV; Coaxial cables; Hybrid fiber coaxial cables; Modems; Optical fiber cables; Physical layer; Power cables; Telecommunications;
Conference_Titel :
Global Telecommunications Conference, 1997. GLOBECOM '97., IEEE
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-4198-8
DOI :
10.1109/GLOCOM.1997.632587
