Patent ID: 8855251

Claim:
A power adjusting method, comprising: receiving a signal from a sending end, wherein the signal comprises a cyclic prefix (CP) signal; detecting and acquiring first receiving power and a second receiving power of the CP signal, wherein the first receiving power is an average power of a number N sampling points of the CP signal and the second receiving power is an average power of a number M sampling points of the CP signal; after determining that a first ratio of the first receiving power to a target power is greater than a first preset threshold, adjusting signal power magnification, so that an adjusted first ratio of the first receiving power to the target power is smaller than the first preset threshold; and after determining that a second ratio of the second receiving power to the target power is greater than a second preset threshold, adjusting the signal power magnification again, so that an adjusted second ratio of the second receiving power to the target power is smaller than the second preset threshold; detecting and acquiring a third receiving power of the CP signal wherein the third receiving power is an average power of a number L sampling points of the CP signal; and after determining that the second ratio of the second receiving power to the target power and a third ratio of the third receiving power to the target power are greater than the second preset threshold, adjusting the signal power magnification, so that an adjusted third ratio of the adjusted third receiving power to the target power is smaller than the second preset threshold.