In the next-generation wireless communication systems, the local cooperation between different units may be deployed to satisfy communication requirements. In this case, the interference suppression between different units and the receiving performance improvement for each single unit should be considered. Multiple schemes have been utilized to solve these problems. However, these schemes ordinarily require sufficiently accurate information of channel, if this accuracy can not be maintained (e.g., channel estimation error can not be ignored), these schemes may not obtain the satisfactory performances. To overcome this disadvantage, in this paper, a novel scheme is proposed. The proposed scheme has several characteristics: (i) a low-complexity extra estimation is implemented to acquire more information of channel estimation error; (ii) with the help of channel estimation error information, each unit can separately execute a two-step process for interference suppression and receiving performance improvement; (iii) no exorbitant information interaction and high-overhead algorithm are needed between multiple units. Through characteristic analysis and numerical results, it is found the proposed scheme can achieve the satisfactory effect in the locally cooperative network.

在下一代无线通信系统中，可以通过部署不同单元之间的本地协作来满足通信需求。在这种情况下，应考虑不同单元之间的干扰抑制和单个单元的接收性能提升。已使用多种方案来解决这些问题。然而，这些方案通常需要足够准确的信道信息，如果不能保持这种精度（例如，不能忽略信道估计误差），这些方案可能无法获得令人满意的性能。为了克服这个缺点，在本文中，提出了一种新的方案。所提出的方案有几个特点：（我) 实现了一个低复杂度的额外估计，以获得更多的信道估计误差信息；( i i )借助信道估计误差信息，各单元可分别执行两步过程，用于干扰抑制和接收性能提升；( i i i ) 多个单元之间不需要过多的信息交互和高开销的算法。通过特性分析和数值结果表明，该方案在本地协作网络中可以达到满意的效果。