Optimal Power Allocation Scheme for Downlink CoMP Systems

• 作者: Han Hai Jun Li Moon Ho Lee Ying Guo
• 来源期刊: 通讯与网络(英文)
• 学科: 工学
• 关键词: COMP PRECODING Power ALLOCATION Waterfilling
• 年，卷（期）: 2013,（2）
• 页码范围: 15-19
• 页数: 5页
• 分类号: TN92

摘要

Coordinated multi-point transmission and reception (CoMP) scheme enable LTE-Advanced systems to achieve their higher spectral efficiency. Allowing base stations to cooperate one another is one of the solutions to mitigate the inter-cell interference (ICI). In this paper, we propose an iterative power allocation scheme with MMSE procoding based on a modified water-filling for downlink CoMP systems, which achieves the optimal performance. The simulation results show that our proposed system can achieve its optimal rate according to its antenna configuration. Comparing them with a block diagonalization (BD) shows the advantages of MMSE precoding, in particular at a low SNR region.