These requirements govern the allowed spectrum of a transmission and vary according to the bandwidth of the channel and the frequency of transmission.
这些需求根据信道带宽和发射频率改变，控制允许发送的频谱。
Meanwhile, at the aspect of the use of usufruct of radio spectrum resources, the restriction of disposition should be opened, and transferring, leasing and mortgage of usufruct should be allowed.
同时，在用益权的行使方式方面，应当放开对处分权的限制，允许频谱资源用益权的转让、租赁和抵押。
In our scheme, unlicensed users are allowed to adaptively select available spectrum, adopt dynamic spectrum access technology, improving spectrum utilization effectively.
该方案允许未授权用户自适应地选取可用带宽，实现了动态频谱接入，有效地提高了频谱利用率。
In our scheme, unlicensed users are allowed to adaptively select available spectrum, adopt dynamic spectrum access technology, improving spectrum utilization effectively.
该方案允许未授权用户自适应地选取可用带宽，实现了动态频谱接入，有效地提高了频谱利用率。
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