COGNITIVE RADIO COMMUNICATION SYSTEM BASED ON COOPERATION SIGNAL OF SECONDARY SYSTEM

摘要

secondary system helps the uplink communication of the primary system with the cooperation signals. The primary system can evaluate the contribution of the working signal for uplink communication. Then, the primary system may distribute the radio resource for the secondary system according to the contribution of the working signal. Thus, the performance of the primary system and the secondary system, (Throughput) can be improved as a whole. ; cognitive radio, cooperation signals, the uplink, the soft decision, radio resource , contributions