RELAY:
A relay network is a broad class of network topology commonly used in wireless communication where the source and destination are interconnected. In such a network the source and destination cannot communicate to each other directly because the distance between the source and destination is greater than the transmission range of both of them, hence the need for intermediate node(s) to relay. A relay network is a type of network used to send information between two devices, for e.g. server and computer, that are too far away to send the information to each other directly. Thus the network must send or "relay" the information to different devices, referred to as nodes, that pass on the information to its destination. A well-known example of a relay network is the Internet. A user can view a web page from a server halfway around the world by sending and receiving the information through a series of connected nodes.
Fig: Relay Network
Hence, the CR users fail to accurately characterize their surrounding radio environment and may become misled or compromised, which leads to a malfunction. Alternatively, an illegitimate user may attempt to tap the communications of authorized CR users by eavesdropping, to intercept confidential information
Moreover, the SRT(Security-reliability trade-off) performance of MRS is better than that of SRS. Additionally, as the number of SRs increases, the SRTs of both the SRS and of the MRS schemes improve significantly, demonstrating their benefits in terms of enhancing both the security and reliability of secondary transmissions.
FOR MORE DETAILS;
RELAY SELECTION IMPROVES THE SECURITY RELIABILITY TRADE OFF IN COGNITIVE RADIO SYSTEMS
A relay network is a broad class of network topology commonly used in wireless communication where the source and destination are interconnected. In such a network the source and destination cannot communicate to each other directly because the distance between the source and destination is greater than the transmission range of both of them, hence the need for intermediate node(s) to relay. A relay network is a type of network used to send information between two devices, for e.g. server and computer, that are too far away to send the information to each other directly. Thus the network must send or "relay" the information to different devices, referred to as nodes, that pass on the information to its destination. A well-known example of a relay network is the Internet. A user can view a web page from a server halfway around the world by sending and receiving the information through a series of connected nodes.
Hence, the CR users fail to accurately characterize their surrounding radio environment and may become misled or compromised, which leads to a malfunction. Alternatively, an illegitimate user may attempt to tap the communications of authorized CR users by eavesdropping, to intercept confidential information
Moreover, the SRT(Security-reliability trade-off) performance of MRS is better than that of SRS. Additionally, as the number of SRs increases, the SRTs of both the SRS and of the MRS schemes improve significantly, demonstrating their benefits in terms of enhancing both the security and reliability of secondary transmissions.
FOR MORE DETAILS;
RELAY SELECTION IMPROVES THE SECURITY RELIABILITY TRADE OFF IN COGNITIVE RADIO SYSTEMS
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