ZF-THP를 이용한 다중 안테나 다중 사용자 시스템에서 전송률 합 최적화를 위한 전력 할당 알고리즘Power Allocation Algorithms for ZF-THP Sum Rate Optimization in Multi-user Multi-antenna Systems
- Other Titles
- Power Allocation Algorithms for ZF-THP Sum Rate Optimization in Multi-user Multi-antenna Systems
- Authors
- 이욱봉; 송창익; 이상림; 이길봄; 곽진삼; 이인규
- Issue Date
- 2012
- Publisher
- 한국통신학회
- Keywords
- 다중 안테나 다중 유저 시스템; 전력할당; ZF-THP; MIMO BC; Power Allocation; Mutual Information
- Citation
- 한국통신학회논문지, v.37, no.9, pp.753 - 761
- Indexed
- KCI
- Journal Title
- 한국통신학회논문지
- Volume
- 37
- Number
- 9
- Start Page
- 753
- End Page
- 761
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/109867
- ISSN
- 1226-4717
- Abstract
- In this paper, we study a power allocation technique for Tomlinson-Harashima precoding (THP) in multi-user multiple input single output (MISO) downlink systems. In contrast to previous approaches, a mutual information based method is exploited for maximizing the sum rate of zero-forcing THP systems. Then, we propose a simple power allocation algorithm which assigns proper power level for modulo operated users.
Simulation results show that the proposed scheme outperforms a conventional water-filling method, and it provides similar performance with near optimal method with much reduced complexity.
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