Title :
Up-link characterisation of multi-beam LMDS system with perturbed cell plan
Author :
Engstrom, U. ; Johansson, M. ; Derneryd, A. ; Johannisson, B.
Author_Institution :
Ericsson Res., Ericsson Microwave Syst. AB, Molndal, Sweden
Abstract :
The driving forces behind the development of new broadband access systems are telecommunication operator requirements for access systems as well as users´ increased bandwidth demands. In this context, broadband wireless systems such as LMDS (local multipoint distribution system) are competitive and complementary techniques to copper and fiber access. LMDS networks using wide-beam radio node antennas have a capacity asymmetry in up-link/down-link due to up-link interference limitation. C/I-simulations have been performed in up-link for both sector-beam and multiple-beam radio node antennas to compare the performance. It is expected that multi-beam antennas can be used to reduce the interference level in up-link. The up-link C/I-performance of a cellular network with irregular positioned hubs is analyzed, both for sector and three-beam node antennas.
Keywords :
broadband networks; cellular radio; interference suppression; multibeam antennas; radio access networks; C/I-simulations; LMDS; broadband access systems; capacity asymmetry; cellular network; down-link; interference reduction; irregular positioned hubs; local multipoint distribution system; sector antennas; three-beam node antennas; up-link; Bandwidth; Copper; Costs; Distribution functions; Frequency; Interference; Lattices; Optical fiber polarization; Quality of service; Slot antennas;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2001. IEEE
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-7070-8
DOI :
10.1109/APS.2001.958811
