Title :
A controlled distributed antenna system for increasing Eb/Io 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 broadcasted 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 interferences to other mobiles. It is also shown that the reverse link Eb/Io can be improved by selection diversity combining
Keywords :
antennas; code division multiple access; distributed control; diversity reception; interference suppression; microcellular radio; probability; radio links; radiofrequency interference; spread spectrum communication; telecommunication control; DS-CDMA simulcasting system; Eb/Io; blocking probability reduction; controlled distributed antenna system; distributed antenna ports; forward link; handoff attempt rate; hybrid fibre coaxial cable; interference elimination; microcells; reverse link; selection diversity combining; shadowing region; Base stations; Control systems; Costs; Distributed control; Diversity reception; Fading; Hybrid fiber coaxial cables; Microcell networks; Multiaccess communication; Shadow mapping;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 1998. The Ninth IEEE International Symposium on
Conference_Location :
Boston, MA
Print_ISBN :
0-7803-4872-9
DOI :
10.1109/PIMRC.1998.731428
