基于归一化吞吐量的CDMA Ad hoc网络传输范围优化  

Optimal transmission range for CDMA Ad hoc networks based on normalized throughput

作　　者：孙诗东[1] 聂景楠[1,2] 

机构地区：[1]解放军理工大学通信工程学院,江苏南京210007 [2]东南大学移动通信国家重点实验室,江苏南京210096

出　　处：《解放军理工大学学报（自然科学版）》2010年第2期196-201,共6页Journal of PLA University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(60503049);东南大学移动通信国家重点实验室开放课题基金资助项目(N200602).

摘　　要：针对CDMA Ad hoc网络节点传输范围优化问题,提出了基于归一化吞吐量的节点最优传输范围分析模型,推导出了不同扩频码分配机制下的节点最优传输范围。数值结果表明,与基于前向进阶尺度模型获得的最优网络参数相比,基于归一化吞吐量分析模型获得的节点最优传输范围变小而节点最优发送概率增大,进而导致单个节点的传输性能降低而整个网络的传输性能提高。扩频码分配机制影响节点最优传输范围的选取,在基于接收机的扩频码分配机制下,节点最优传输范围较大。An analytical model for determining the optimal transmission range of CDMA ad hoc networks was presented by introducing the concept of normalized throughput. The presented model was used to derive the values of the optimal transmission range under various spreading code protocols. Numerical results show that, in contrast to the model based on the expected forward progress （EFP） metric, the presented model provides higher optimum transmission probability and narrower optimum transmission range, and as a consequence, the network transmission performance is improved at the cost of degrading the terminal performance. Additionally, the spreading code protocols have significant effects on the optimal transmis- sion range, and the optimal transmission range is larger under the receiver-based spreading code protocol.

关 键 词：CDMA AD HOC网络 传输范围 归一化区域吞吐量 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]