生物友好的认知水声网络频谱分配

发布时间：2018-07-29 06:35

【摘要】：为充分利用海洋哺乳动物和水声传感器网络(UASNs)共享的稀缺频谱资源,提出了一种生物友好的认知水声网络频谱分配(MMF-CASA)方法。将海洋哺乳动物作为主用户,传感器节点作为次级用户,设计了生物友好的认知水声网络通信机制。以次级用户系统容量最大化为目标建立效用函数,通过拉格朗日乘数法和功率控制与信道分配技术求解次级用户的发送功率与信道分配,设计了生物友好的水声网络频谱分配机制和算法。实现了主用户和次级用户信道共享,最大化了水下稀缺的频谱资源的利用率。仿真结果表明,采用生物友好的认知水声网络频谱分配方法能够避免传感器节点通信对海洋哺乳动物间通信的干扰,使网络的频带利用率和系统容量分别提高了37.4%和34.2%。
[Abstract]:In order to make full use of the scarce spectrum resources shared by marine mammals and underwater acoustic sensor networks (UASNs), a biologically friendly spectrum allocation (MMF-CASA) method for underwater acoustic networks is proposed. Taking marine mammals as primary users and sensor nodes as secondary users, a biological friendly communication mechanism for underwater acoustic networks is designed. Aiming at maximizing the capacity of secondary users, the utility function is established. The transmission power and channel allocation of secondary users are solved by Lagrange multiplier method and power control and channel allocation techniques. A biological friendly spectrum allocation mechanism and algorithm for underwater acoustic networks are designed. The channel sharing between primary and secondary users is realized, and the efficiency of spectrum resource is maximized. The simulation results show that the proposed method can avoid the interference of sensor node communication to marine mammal communication, and increase the bandwidth efficiency and system capacity by 37.4% and 34.2%, respectively.
【作者单位】：天津大学电子信息工程学院;
【基金】：国家自然科学基金项目(61571318) 青海省科技计划项目(2015-ZJ-904) 海南省科技计划项目(ZDYF2016153)
【分类号】：TN929.3

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