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| A Relay Mechanism with Maximal Throughput in Cognitive Radio Networks |
| HE Song, JIANG Ling-Ge, HE Chen |
| (School of Electronic, Information and Electrical Engineering, Shanghai Jiaotong University, Shanghai 200240, China) |
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Abstract To oppose channel fading and improve spectrum utilization, a model of multi secondary users assist the primary users in a multichannels cognitive radio network was proposed. Based upon the maximal throughput principle, an allocate problem was created. Through theoretical analysis, the allocate problem was transformed into the standard assignment problem (AP), and a select algorithm basd on the Hungarian method was proposed. The simulation results show that the proposed relay mechanism can oppose the channel fading well and increase the throughput of the primary users significantly, thereby improve the spectrum utilization.
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Received: 10 May 2011
Published: 28 June 2012
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