The Multi-PUs Multiple Power Allocation Strategy Based on Sensing/Transmission Frame Structure

Hao FU, Shou-yi YANG, Tian CHEN, Yan ZHENG


In traditional cognitive radio system, according to the problem of balancing the spectrum sensing and data transmission time with multiple primary users, it uses the multi-power distribution strategy based on sensing/transmission frame structure. This strategy adopts the sensing/transmission frame structure, in order to avoid the spectrum sensing and data transmission time trade-off problem. It can ensure the quality of service of the primary users, because the primary users can select the optimal channel with optimized transmission power to maximize the throughput. Simulation results show that compared with traditional frame structure under four state three power allocation strategy, the proposed power allocation strategy can reduce the interference of the primary users, improve the capacity of the cognitive system, and make full use of the advantages of multiple primary users and the frame structure.


Cognitive radio, Multiple primary users, Power allocation, Spectrum sharing, Throughput optimization


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