Apparatus and method for estimating and reporting a carrier to interference noise ratio in a multi-antenna system

摘要

An apparatus and method for estimating and reporting a Carrier to Interference Noise Ratio (CINR) in a wireless communication system are provided. The wireless communication system receives the CINR reported from the mobile station and transmits data by adaptively setting a coding and modulation level. In a mobile station, a Radio Frequency (RF) processor provided with at least two antennas processes antenna-by-antenna radio signals and converts the radio signals to baseband signals. Switches output or intercept the antenna-by-antenna signals received from the RF processor. An effective CINR measurer measures diversity parameters including a CINR value from the signals output by the switches and outputs the measured diversity parameters. A controller controls an operation for turning on/off the switches on a basis of the diversity parameters received from the effective CINR measurer and generates a report message using the diversity parameters. A transmitter transmits the report message to a base station.