Title :
A resource allocation algorithm using frequency borrowing in hierarchical CDMA cellular systems
Author :
Chung, Young-uk ; Cho, Dong-Ho
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Korea Adv. Inst. of Sci. & Technol., Daejeon, South Korea
Abstract :
The great increase of the number of users requires efficient management of the spectrum. In hierarchical cellular systems based on CDMA, the frequency borrowing resource allocation (FBRA) algorithm is proposed to allocate frequency spectrum more efficiently. This algorithm lends frequency spectrum of macrocell to microcells when mass hot spot occurred. We analyze the interference to signal ratio and reverse link capacity in case of using the proposed algorithm. Based on the result, the algorithm performance is evaluated in view of blocking, the handoff refused probability, and the spectrum efficiency. The numerical result shows that the proposed algorithm can increase the capacity and solve the mass hot spot problem
Keywords :
channel capacity; code division multiple access; frequency allocation; microcellular radio; multiuser channels; probability; radio links; radiofrequency interference; FBRA algorithm; blocking; efficient spectrum management; frequency borrowing resource allocation; frequency spectrum allocation; handoff refused probability; hierarchical CDMA cellular systems; interference to signal ratio; macrocells; mass hot spot problem; microcells; performance evaluation; reverse link capacity; spectrum efficiency; Engineering management; Frequency; Interference; Macrocell networks; Microcell networks; Multiaccess communication; Radio spectrum management; Resource management; Technology management; Telecommunication traffic;
Conference_Titel :
Communications, 2002. ICC 2002. IEEE International Conference on
Conference_Location :
New York, NY
Print_ISBN :
0-7803-7400-2
DOI :
10.1109/ICC.2002.996878
