Title :
Capacity with MRC-based macrodiversity in CDMA distributed antenna systems
Author :
Dai, Lin ; Zhou, Shi-dong ; Yao, Yan
Author_Institution :
State Key Lab on Microwave & Digital Commun., Tsinghua Univ., Beijing, China
Abstract :
We analyze the effect of MRC-based macrodiversity on the reverse-link and forward-link capacity in CDMA distributed antenna systems. A detailed analytical model is presented and exact outage probability expressions are derived. Our investigation shows that on the reverse link, with macrodiversity the interference can be suppressed greatly, which leads to a significant increase of capacity. However, on the forward-link, we prove that if simulcasting is used in CDMA distributed antenna systems, the forward-link capacity cannot increase with macrodiversity whatever power allocation scheme is adopted.
Keywords :
antennas; cellular radio; channel capacity; code division multiple access; diversity reception; interference suppression; multiuser channels; probability; radio links; radiofrequency interference; spread spectrum communication; CDMA distributed antenna systems; DS-CDMA systems; MRC-based macrodiversity; analytical model; capacity; cellular radio; exact outage probability; forward-link capacity; interference suppression; maximal ratio combining; mobile radio; power allocation; reverse-link capacity; simulcasting; virtual cell; Analytical models; Fading; Microwave antennas; Mobile antennas; Multiaccess communication; Optical fiber cables; Optical fiber communication; Performance analysis; Receiving antennas; Shadow mapping;
Conference_Titel :
Global Telecommunications Conference, 2002. GLOBECOM '02. IEEE
Print_ISBN :
0-7803-7632-3
DOI :
10.1109/GLOCOM.2002.1188225
