A novel spatial Tomlinson–Harashima precoding scheme in multi-user MIMO broadcast channels. (8th May 2012)

• Record Type: Journal Article
• Authors: Zhang, Zufan; Yi, Yinxue; Yang, Jing
• Is Part Of: International journal of wireless and mobile computing. Volume 5:Number 2(2012)
• Page Start: 137
• Page End: 143
• Publication Date: 2012-05-08
• Subjects: STHP -- spatial Tomlinson–Harashima precoding -- user fairness -- multi-user MIMO -- ordering; Mobile computing -- Periodicals; Wireless communication systems -- Periodicals; 004.6
• Languages: English
• ISSNs: 1741-1084

Abstract

Spatial Tomlinson–Harashima Precoding (STHP) is a promising transmission technique that can mitigate Inter-User Interferences (IUI) in a multi-user Multiple Input Multiple Output broadcast channel. However, traditional STHPs cannot guarantee user fairness that is supposed to be a desirable feature for future wireless communication systems. This paper proposes an improved STHP transceiver structure. It is based on zero-forcing criterion and has the perfect user fairness. In addition to this, we also derive an elegant ordering method that can significantly improve the system performance.