To accommodate more users with limited spectrum, the radius of new cellular will be much smaller, the factor of spectrum reuse will be more tight.
为了在有限频谱范围内满足更多的用户需要，通信系统的蜂窝半径越来越小，频率复用密度越来越高。
Andrea Goldsmith: There's not enough spectrum to assign every phone in the world its own dedicated channel so we have to reuse the channels and that causes interference between users.
安德里亚·戈德史密斯：由于频谱资源有限，我们很难让每个用户享有特定的频段，只能不断地将它们回收利用，导致用户之间出现通信干扰。
Andrea Goldsmith: There's not enough spectrum to assign every phone in the world its own dedicated channel so we have to reuse the channels and that causes interference between users.
安德里亚·戈德史密斯：由于频谱资源有限，我们很难让每个用户享有特定的频段，只能不断地将它们回收利用，导致用户之间出现通信干扰。
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