| 摘要 |
<p>A SINR estimation method and apparatus in a communications system are disclosed. The SINR estimation method comprises the steps of converting an I component and a Q component of the received interfered signals into decided symbol; mapping the decided symbol into the QAM constellation point to obtain the estimated signal; delaying the I component and the Q component of the received interfered signal; subtracting the estimated signal from the received interfered signal to obtain the estimated interference; calculating the power of the estimated interference and the power of the estimated signal; and determining the SINR based on the power of the estimated interference the power of the estimated signals. The SINR estimation method and the apparatus of the present invention can quickly and accurately estimated the SINR ratio, which solves the defects, such as low computing speed, high complexity.</p> |
