Research on cooperative detection and multiple access for cognitive radio system
LiXin, TAN Xue-zhi
Communication Research Center,Harbin Institute of Technology,Harbin 150001,China
Abstract:
As cognitive radio (CR) needs to detect spectrum accurately and utilize the idle spectrum efficiently,a new model of CR is proposed.This model adopts energy detection with auto-adapted threshold and produces spectrum mark vector.The basis function is obtained through making IDFT to the inner product of spectrum and phase vectors,and it is variable with the spectrum states.Data are sent through modulation on the basis function,and it can be estimated by correlation in the receiving end.The cooperative detection and multiple access of this model are also researched in this paper,and the performance is finally analyzed.Simulations show the cooperative detection of this model can obtain higher detection probability,and the disaccord of the basis functions between sending and receiving ends can lower its performance.
Key words: cognitive radio energy detection basis function
DOI：10.11916/j.issn.1005-9113.2011.06.017
Clc Number:TN925
Fund:
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Research on cooperative detection and multiple access for cognitive radio system
本站小编 哈尔滨工业大学/2019-10-23
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