Title :
Microcell-adjusting for hierarchical cellular systems with non-uniformly distributed teletraffic
Author :
Su, Szu-Lin ; Tsai, Chia-Sheng
Author_Institution :
Dept. of Electr. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan
Abstract :
Hierarchical cellular systems are usually adopted in the non-uniform traffic environment, especially when hot spots exist. Considering the spatial fluctuation of traffic load, three schemes to adjust the coverage area of a microcell, namely ATP (adjusting total transmission power of microcell base station), ARP (adjusting the ratio of pilot signal power to the total transmission power), and ABP (adjusting both of them), are mathematically analyzed in this paper. The system performances of these schemes are also shown by the numerical examples.
Keywords :
code division multiple access; microcellular radio; telecommunication traffic; ABP scheme; ARP scheme; ATP scheme; CDMA; code division multiple access; hierarchical cellular systems; hot spots; microcell adjustments; microcell base station; microcell coverage area; nonuniformly distributed teletraffic; pilot signal power; spatial fluctuations; total transmission power; Base stations; Energy consumption; Fluctuations; Macrocell networks; Mathematical analysis; Microcell networks; Multiaccess communication; Power system modeling; Signal analysis; Telecommunication traffic;
Conference_Titel :
Wireless Communications and Networking, 2003. WCNC 2003. 2003 IEEE
Conference_Location :
New Orleans, LA, USA
Print_ISBN :
0-7803-7700-1
DOI :
10.1109/WCNC.2003.1200596
