| Title |
Erlang Capacity and Call Blocking Probability of CDMA Hierarchical Cellular Systems with Soft Handoff |
| Authors |
성봉훈(Seong, Bong-Hun) ; 오현석(O, Hyeon-Seok) ; 한재충(Han, Jae-Chung) |
| Keywords |
Erlang Capacity ; Call Blocking Probability ; Interference Power ; Hierarchical Cellular System ; Soft Handoff |
| Abstract |
This paper analyzes interference power, Erlang capacity, the number of handoff occurrences, and call blocking probability with respect to the cell radius, the soft handoff region, and the mobile's velocity in a CDMA hierarchical cellular system. The microcell cellular system has the higher Erlang capacity than the macrocell cellular system. However, the microcell cellular system, which has a high system capacity through frequency reuse has the call blocking probability higher than macrocell cellular system. Also the interference power and the call blocking probability are decreased with the operation of soft handoff. Therefore, this paper presents the optimization of soft handoff region so as to maximize system's Erlang capacity with the low the call blocking probability according to mobile's velocity in the CDMA hierarchial cellular system. |