| 摘要 |
A method of estimating an Interference Signal Strength Indicator (ISSI) for a finger in a receiver such as a RAKE receiver which combines signals from a plurality of antenna elements to provide a formed signal, the method comprising estimating the ISSI for the formed signal, pre-processing the ISSI estimate based on weighting factors used in the combiner to obtain an estimate of ISSI representative of ISSI for the antenna elements, filtering the ISSI estimate and post-processing the ISSI estimate based on the weighting factors to provide a filtered estimate of ISSI for the formed signal. An estimate of the total Received Signal Strength Indicator (RSSI) is calculated by coherently summing channel estimates h(i) for each finger. An estimate of the total Signal to Interference Ratio (SIR) is calculated from total RSSI and total ISSI and not from summing individual SIRs for each finger. Total ISSI is calculated as a function of individual ISSIs for each finger. |
