RECEIVER AND METHOD OF ESTIMATING SIGNAL TO NOISE POWER RATIO

摘要

Provided are a receiver and a method of estimating signal to noise power ratio, whereby it is possible to reduce computations and bit width. The receiver is provided with a receiving quality SNR estimation unit for estimating receiving quality SNR which represents the quality of a received signal, and the receiving quality SNR estimation unit (16) is provided with a signal and noise power estimation unit (21) for estimating the signal power and the noise power of a known signal mapped in a received signal; an EESM operation unit (23) for estimating signal to noise ratio by EESM operation based on each signal to noise power ratio of the known signal; and a receiving quality determination unit (22) which calculates signal to noise power ratio based on each average value of the signal power and the noise power which is estimated by the signal and noise power estimation unit (21), and outputs one of the signal to noise power ratios as the receiving quality SNR by determining the level of either one of the signal to noise power ratios calculated by the receiving quality determination unit (22) and the EESM operation unit (23).