By having the power level of each spread spectrum signal below the predetermined level, then {HEAD ~ the total power} from all spread spectrum used within a cell does not interfere with {TAIL ~ mobile users} in a mobile cellular system, or with microwave users in the fixed service microwave system 
By having the power level of each spread spectrum signal below the predetermined level , then { HEAD ~ the total power } from all spread spectrum used within a cell does not interfere with { TAIL ~ mobile users } in a mobile cellular system , or with microwave users in the fixed service microwave system
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