| 摘要 |
PROBLEM TO BE SOLVED: To provide access points and terminals capable of efficiently transmitting and receiving data, and methods for operating them in a radio network system which uses a space division multi-user multiple input multiple output method.SOLUTION: An access point generates a signal detection field 211, a first channel estimation field 212, a common control field 213, and precoded data 220, and transmits them to a terminal. The terminal detects a reception frame using the signal detection field 211, estimates a channel using the first channel estimation field 212, and detects non-precoded common control information using the common control field 213. In addition, the terminal sets a gain value of a power amplifier using a power amplifier control field 230, and estimates a channel for demodulating a precoded individual control field 250 and a data field 260 using a second channel estimation field 240. |
