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