干扰消除对无线Ad Hoc网络传输容量的影响

Transmission Capacity of Wireless Ad Hoc Network with Interference Cancellation

无线Ad Hoc网络是一个干扰受限系统,网络的容量取决于网络中的干扰信号功率的大小。在目前针对无线Ad Hoc网络容量进行研究的文献中没有使用有效的抑制干扰信号功率的方法,使得网络容量受到很大限制。提出通过设置保护区域的方法来降低干扰信号强度,重新对无线Ad Hoc网络进行建模,并推导了传输容量的上下界。通过仿真结果可以知道,设置保护区域能够极大程度降低网络中的干扰信号强度,合理地设置保护区域大小能有效提高传输容量。

For a wireless Ad Hoc network is interference - limited, the network capacity is mainly determined by the power of interference. There is no good method to overcome the interference in the study of network capacity in wireless Ad Hoc networks, so the network capacity is limited greatly. In this paper, guard zone is used to reduce the power of interference, the network model for wireless Ad Hoc networks are rebuild, and the upper and lower bounds of the transmission capacity are derived. Theoretical analysis and simulation result show that, using guard zone in Ad Hoc networks could greatly reduce the level of interference, and reasonable radius of guard zone could increase the transmission capacity.