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Detail
Registered METHOD AND APPARATUS FOR ALLOCATING TRANSMISSION POWER IN MULTI INPUT MULTI OUTPUT SYSTEM
- Inventors
- In-Kyeong Choi, Sok-Kyu Lee
- Application No.
- 13620517 (2012.09.14)
- Publication No.
- 20130266054 (2013.10.10)
- Registration No.
- 8891643 (2014.11.18)
- Country
- UNITED STATES
- Project Code
- 11MI1800, Research on Radio Transmission Technology for IEEE 802.11 VHT WLAN, Sok-Kyu Lee
- Abstract
- 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 Keywords
- Inter-user interference, 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, iterative water-filling, transmission power