Title :
A controlled distributed antenna system for increasing capacity in the DS-CDMA system
Author :
Lee, J.H. ; Roh, J.H. ; Kwun, J.H. ; Kang, C.E.
Author_Institution :
Dept. of Electron. Eng., Yonsei Univ., Seoul, South Korea
Abstract :
We consider the simulcasting system using distributed antennas in the DS-CDMA system. The simulcasting system in which the same signal is broadcast simultaneously by distributed antenna ports in a cell can reduce both the blocking probability of a call in a shadowing region and the handoff attempt rate. We propose a controlled distributed antenna system to improve the Eb/Io in both links of the DS-CDMA simulcasting system. It is shown by simulation that improvement in the forward link Eb/Io can be achieved if the ERPs of those ports located far from the considered mobile are reduced to eliminate unwanted interference to other mobiles. It is also shown that the reverse link Eb/Io can be improved by selection diversity combining
Keywords :
broadcast antennas; channel capacity; code division multiple access; diversity reception; interference suppression; microcellular radio; multiuser channels; radio links; radiofrequency interference; spread spectrum communication; telecommunication control; DS-CDMA simulcasting system; ERP; PCS; call blocking probability reduction; controlled distributed antenna system; forward link; handoff attempt rate; interference reduction; microcells; personal communication services; reverse link; selection diversity combining; shadowing region; simulation; Base stations; Control systems; Costs; Distributed control; Diversity reception; Fading; Hybrid fiber coaxial cables; Microcell networks; Multiaccess communication; Shadow mapping;
Conference_Titel :
Universal Personal Communications, 1998. ICUPC '98. IEEE 1998 International Conference on
Conference_Location :
Florence
Print_ISBN :
0-7803-5106-1
DOI :
10.1109/ICUPC.1998.733002
