| 摘要 |
<p>Methods and apparatus for estimating code-reuse interference associated with a multi- stream multiple-input multiple-output (MIMO) signal are disclosed. An estimate for the data-to- pilot power ratio is obtained as a by-product of parametric estimation of impairment covariance associated with the received MIMO signal. In an exemplary method, a parametric impairment model is constructed (510) for a received MIMO signal, the parametric model omitting code- reuse interference. Impairment covariance is measured (520), using received pilot symbol data. The parametric impairment model is fitted (530) to the measured impairment covariance to obtain one or more scaling parameter values. A per-code energy value for a first data stream is then calculated from the one or more scaling parameter values. In some embodiments, the data-to-pilot power ratio for the received signal is first calculated (540) from the one or more scaling parameters, and the per-code energy value calculated (550) from the data-to-pilot power ratio.</p> |
