Abstract
In recent years, cooperative communications are widely studied. Cooperative communications can obtain the space diversity as multiple-input multiple-output (MIMO) systems. In cooperative communications, the relay method is important as decode-and-forward (DF) and decode-amplify-forward (DAF). The multi-relay cooperative communications can improve the system performance. In the multi-relay cooperative communications, the optimum packet splitting method is effective. Moreover, the multi-relay cooperative communications can more improve the system performance by using the power allocation (PA). However, the PA method requires large feedback information (FBI). To solve this problem, in this article, we propose the optimum packet splitting method based on the time domain channel state information (CSI) in the multi-relay cooperative communication with DF and DAF.
Highlights
As the generation standard of the mobile communications, a long-term evolution (LTE)-Advanced is standardized [1]
In this article, we propose the optimum packet splitting method based on the time domain channel state information (CSI) in the multi-relay cooperative communication with DF and DAF
I=0 where ND is the number of data symbols for SD, Ni,R is the number of data symbols for ith SRD, and N is the number of relay nodes, respectively
Summary
As the generation standard of the mobile communications, a long-term evolution (LTE)-Advanced is standardized [1]. In this article, we propose the optimum packet splitting in the multi-relay cooperative communication systems. Cooperative communications can improve the system performance by using the power allocation (PA) [24,25,26,27,28] This method is effective in the multi-relay cooperative communications [26]. The PA method requires large feedback information (FBI) since it has to feedback the channel state information (CSI) of each sampling point in a frequency domain To solve these problems, in this article, we propose the optimum packet splitting method based on the time domain CSI in the multi-relay cooperative communication with DF and DAF.
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