网络编码技术对协作分集系统性能的改善

在多用户的无线通信网络中,如何获得系统的鲁棒性与高效性是一个挑战。协作分集与网络编码技术都能有效的促进系统达到这个目标。协作分集技术允许多个单天线的移动终端共享彼此的天线,形成了虚拟的多发射天线以得到分集增益。本文充分挖掘多用户间网络编码的潜能,将网络编码技术加入协作分集,以较低的硬件消耗与较高的频谱利用率获得了更好的分集增益,从而实现了对传统协作分集系统的性能改善。

The improvement of cooperative diversity through network coding

In the wireless communication networks of multi-user,a challenge is how to provide robust and high efficient of system.To achieve this goal,cooperative diversity and network coding are effective.The technology of cooperative diversity allows mobile terminals with single antenna to share the antenna with each other so as to form a virtual multi-antenna transmission system,in order to achieve diversity gain.This paper fully explores the potential of network coding between users,adds the technology of network coding to cooperative diversity.The result shows that the new scheme leads to a better diversity performance at a lower hard cost and higher spectral efficiency.It improves the performance of the traditional cooperative diversity system.