Energy detection method based on p-power wireless cooperative spectrum sensing
A technology of cooperative spectrum sensing and energy detection, applied in the field of cognitive radio, can solve the problem of low detection probability
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[0036] The present invention will be further described in detail below in conjunction with the examples, which are not intended to limit the present invention.
[0037] The energy detection method based on p-th power wireless collaborative spectrum sensing provided in this embodiment is specifically:
[0038] (Construct p-th power model)
[0039] For binary hypothesis tests:
[0040] h 0 :y n = ω n (1);
[0041] h 1 :y n = αs n +ω n
[0042] Wherein, n=1, 2, ... N, indicating that the sampling sample space of the signal has N sampling values. In cognitive radio systems, H 0 Indicates that the authorized user signal does not exist, H 1 Indicates that an authorized user signal exists. the y n Indicates the nth signal sample, s n is the signal part transmitted by the authorized primary user, and α is the channel gain parameter. Assume the noise part ω n is the mean is 0 and the variance is σ 2 Gaussian noise, the transmitted signal s n is mean 0, variance σ ...
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