Title :
Link-level effect of a noisy channel over data transmission on the return path of an HFC network
Author :
Carro, Belen ; Chan, Nguyen ; Sánchez, H. ; Redoli, J. ; Mompo, R.
Author_Institution :
Edificio Nuevas Tecnologias, Valladolid Univ., Spain
Abstract :
There are many problems regarding the performance of the return channel of a hybrid fiber-coaxial (HFC) network, as cable operators know well. These problems are mainly due to the branch-tree architecture of the coaxial part of the network, which causes all the noise from any point to add in the upstream direction, an effect called noise funneling. The present work has focused on the controlled insertion of selected types of noise into a part of a coaxial network, simultaneously with the data transmission of a cable modem towards the head end. As a result, the upstream (return) data transmission will be affected, depending on the various changing and controlled noise characteristics. Monitoring several parameters shows the effect on the transmitted signal, thus giving an idea of the quality of the transmission
Keywords :
broadband networks; data communication; hybrid fibre coax networks; random noise; 5 to 55 MHz; HFC network; branch-tree architecture; broadband network; cable modem; data transmission; hybrid fiber-coaxial network; link-level effect; noise funneling; noisy channel; return path; Active noise reduction; Coaxial cables; Coaxial components; Data communication; Frequency; Hybrid fiber coaxial cables; Noise generators; Optical fiber cables; Power cables; Signal generators;
Conference_Titel :
Global Telecommunications Conference, 2001. GLOBECOM '01. IEEE
Conference_Location :
San Antonio, TX
Print_ISBN :
0-7803-7206-9
DOI :
10.1109/GLOCOM.2001.965152
