| 摘要 |
<p>Methods and systems for removing interference from strongly powered SSS sequences in a received signal so that comparatively weak powered SSS sequences in the received signal can be detected are disclosed. The methods and systems can perform a first cell search using the received signal to detect a strong powered SSS sequence. Using a known SSS sequence corresponding to the strong powered SSS sequence, the channel over which the strongly powered SSS sequence is received can be estimated. The estimated channel can then be used to determine the contribution of the strongly powered SSS and PSS sequence to the received signal so that it can be canceled. With the contribution of the strongly powered SSS and PSS sequence canceled from the received signal, a second cell search can be performed using the received signal to detect a weak powered SSS sequence. [Reference numerals] (302) Perform a cell search using a sampled signal received over the LTE network to detect strong powered SSS sequences; (304) For the detected strong powered SSS sequences detected, estimate the channel over which the strong powered SSS sequences was received; (306) Estimate the contribution of the strong powered SSS and PSS sequence to the received signal using the estimated channel; (308) Cancel the estimated contribution of the strong powered SSS and PSS sequence from the received signal to generate an interference canceled sampled signal; (310) Perform a cell search using the interfrence canceled received signal to detect a weak powered SSS sequence</p> |
