Secondary channel estimation

摘要

Some example embodiments may be directed towards improving a secondary system channel estimation by using a primary channel estimate. Specifically, some example embodiments may be directed towards a method in an user equipment, which may be comprised in a Radio Network, for estimating a primary and a secondary channel. The method may comprise receiving from at least one Base Station a combined wireless communication signal through at least a portion of the primary channel. The method may also comprise determining an estimation of the primary channel. The method may further comprise determining an estimation of the secondary channel. The method may further comprise determining at least one common sub-component between the estimations of the primary and secondary channels, and determining an updated estimation of the secondary channel based on the at least one common sub-component.

主权项

1. A method in a user equipment comprising:
receiving a primary signal from one or more transmitters, including receiving the primary signal from at least one of said transmitters as a combined wireless communication signal that further includes a secondary signal; determining a primary channel estimate based on pilot resources in the primary signal, as received from the one or more transmitters transmitting the primary signal; determining a secondary channel estimate based on pilot resources in the secondary signal, as received from the at least one transmitter transmitting the combined wireless communication signal; identifying a portion of the primary channel estimate that corresponds with the secondary channel estimate, said portion stemming from receipt of the primary signal in the combined signal; and updating the secondary channel estimate using the identified portion of the primary channel estimate.