Dynamic frequency allocation method for cognitive radio cellular network
A cognitive radio and dynamic frequency technology, applied in the field of cognitive radio, can solve problems such as cognitive radio systems that have not been applied
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[0042] A method for dynamic frequency allocation of a cognitive radio cellular network, comprising the following steps:
[0043] According to the available frequency information of each cellular cell, a real-time interference frequency table is generated by the network control center, and the interference frequency table can make the frequency allocated by each cellular cell not cause interference to authorized users. The available frequency information of each cell is acquired by the base station and the cognitive mobile user after performing spectrum sensing on the surrounding wireless environment.
[0044] Construct a cost function according to the interference frequency table, the frequency demand number of each cell, and the frequency allocation constraints between cells, and use the noise chaotic neural network (NCNN) method to minimize the value of this cost function; The function is represented as follows:
[0045] Formula 1):
[0046] E = ...
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