RADIO ELECTRIC COMMUNICATION SYSTEM AND ITS DESIGN METHOD

摘要

PROBLEM TO BE SOLVED: To obtain the system design method that estimates a request of frequency spectrum in electric communication by assigning a frequency spectrum band to a call used in the system that sufficiently provides a communication channel number calculated by a specific equation based on a desired channel band width. SOLUTION: A maximum channel requestω from those among mutually interfering groups is decided based on an estimate channel request of each cell. A required communication channel numberχ to satisfy requests of calls from all cells of the system is calculated according to equation X <=17/12.ω in the case that mutually interfering cells are adjacent cells and according to equationχ <=2.ω -dmin in the case that mutually interfering cells are adjacent cells and cells adjacent to the adjacent cells, where dmin represents a minimum channel request of all the cells of the system. Then based on a desired channel bandwidth, a frequency spectrum band that sufficiently provides the calculated communication channel numberχ and used for the system is assigned.