다중입력 다중출력 시스템에서 송신 전력을 할당하는 방법 및 장치
- 8891643 (2014.11.18)
11MI1800, IEEE 802.11 VHT 초고속 무선랜 무선전송 연구,
- A method and apparatus for allocating transmission power in a transmission terminal having at least one antenna of a multi-input multi-output (MIMO) system are provided. The method includes: measuring inter-stream interference of a plurality of streams; measuring inter-user interference of a plurality of users; and determining the transmission power based on the inter-stream interference and the inter-user interference, wherein the transmission power is determined using an iterative water-filling algorithm in which the Karush-Kuhn-Tucker (KKT) system is iteratively applied to all of the plurality of streams and all of the plurality of users. According to the present invention, several receive antennas are mounted in the MIMO system, thereby making it possible to receive multiple streams. In addition, when the multiple streams are received, transmission power may be allocated to each transmission stream.
- KSP 제안 키워드
- Iterative Water-filling, Karush-Kuhn-Tucker(KKT), Kuhn-Tucker, MIMO system, Multi-input, Multi-input multi-output (MIMO) system, Multi-output, Multiple input multiple output(MIMO), Multiple streams, User interference, Water-Filling, Water-filling algorithm, filling algorithm, inter-user interference(IUI), transmission power