一种基于拍卖机制的混合频谱共享算法

A hybrid spectrum sharing algorithm based on auction mechanism

针对结合Overlay与Underlay模式的混合频谱共享系统网络效益低的问题,提出了一种基于拍卖机制的混合频谱共享算法。该算法将最大化网络效益问题转化为最大化传输速率问题,并将传输速率与价格相关联,构建一个主次用户的买卖市场。在主次用户均有收益的条件下,利用拍卖算法分析了多用户混合频谱共享模型,证明了该算法的收敛性及有效性。数值分析表明,与多用户步进拍卖（MAP）算法相比,该算法的传输速率提高了100~200 kbit/s。

A hybrid spectrum sharing algorithm combined overlay and underlay method based on auction mechanism is proposed to improve the network efficiency in hybrid spectrum model. The network efficiency maximization is formulated as transmission rate maximization problem, the transmission rate can be measured by price, a market is formed between primary users and second users. While both primary users and second users can be benefited in the transaction, the auction algorithm is used to analyze the hybrid spectrum sharing model, the convergence and effectiveness of the algorithm are proved. The result shows that compared with the multi-auctioneer progressive auction algorithm, the network transmission rate is improved 100-200 kbit/s.