Quantum chemistry reaction optimization multi-relay selection method of cognitive relay network
A technology of cognitive relay and chemical reaction, applied in the field of cognitive relay selection, which can solve problems such as low complexity, low system throughput, and no consideration of ownerless user constraints.
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[0080] The following examples describe the present invention in more detail.
[0081] 1. Establish a cognitive system relay selection model. The cognitive relay network consists of a cognitive user source node s, a destination node d, and L amplification-forwarding half-duplex relays. Under the constraints of the main user, cognitive user source node s, destination node d and each relay r i (i=1,2,...,L) share the licensed frequency band with bandwidth W with the primary user receiver a, and the throughput of the cognitive user source node to the destination node link is:
[0082]
[0083] Cognitive user source node transmit power p s Neither can exceed its own maximum transmit power Nor can the interference to the primary user receiver after channel fading exceed the threshold value I th . In addition, each relay uses the same frequency band when forwarding information, and its transmission power can neither exceed its own maximum transmission power nor make the total i...
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