QoS-Based Transmission Method in Cognitive Relay System
A technology of cognitive relay and transmission method, which is applied in the field of QoS-based transmission, can solve the problems of not considering the fading characteristics of cooperative links, and the bit error rate performance is not optimal.
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[0040] The present invention provides a QoS-based transmission method in a cognitive relay system, the flow chart of the method is as follows figure 1 As shown, the method includes:
[0041] S1: Obtain the source nodes of the highest priority preset value transmission services, and form a channel set according to the highest priority preset value source nodes of the transmission services;
[0042] S2: According to the source nodes of the highest priority preset value transmission services, calculate the transmission time of the transmission services of the source node with the largest required bandwidth on each channel in the channel set, and calculate the transmission time according to the transmission time for the The source node with the largest required bandwidth allocates the channel;
[0043] S3: According to the channel allocated for the source node, the source node requests channel information from the destination node, constructs a channel coefficient matrix accordin...
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