基于网络编码的用户信息交换中断概率分析

Analysis on Outage Probability of User's Information Switching Based on Network Coding

通过研究两个用户节点通过一个专用的中继节点进行数据交换的情形,研究基于网络编码放大转发中继下的系统中断概率.相较于传统的基于放大转发或译码转发,网络编码的中继策略极大的提高了系统吞吐量或者减少中继节点的能量消耗.本文分析了系统中断概率的下界,这个下界在不考虑信道方差值时,非常接近由仿真获得的精确中断概率值,在中继节点处于两个用户节点之间中点时,系统的中断概率取得最低值.

This article investigated the outage probability under the amplify - and - forward relaying scheme based on network coding, and considered two users＇data exchange by a dedicated relay nodes. Compared with the traditional relaying scheme amplify - and - forward and decode - and - forward, relay network coding strategy greatly improved the system throughput or reduced the energy consumption of the relay node. It analyzed the outage probability lower bound. The lower bound of the channel without considering the variance was very closed to the simulation of the exact outage probability value obtained. If the relay node is the midpoint between two user nodes, the system outage probability will obtain the minimum value.