Receiver and apparatus for receiving a data signal
View Patent ↗A receiver for receiving a data signal having a channel profile may include an equalizer, to which the data signal is feedable, the equalizer having a plurality of filters and a switching device coupled to the filters, a selection device, which is disposed such that it determines a first number and a second number in dependence on the channel profile, and the switching device is disposed such that it connects a number of linear filters corresponding to the first number to form a first overall filter and connects a number of linear filters corresponding to the second number to form a second overall filter.
1. A receiver for receiving a data signal having a channel profile, comprising
an equalizer, to which the data signal is feedable, the equalizer having a plurality of filters and a switching device coupled to at least a plurality of the plurality of filters,
a selection device, which is disposed such that it determines a first number and a second number in dependence on the channel profile, the channel profile including at least two signal energy clusters, a first of the clusters having a signal energy peak offset in time from a signal energy peak of a second of the clusters, and each of the at least two signal energy clusters having a width defined at least by multipath components, and
a memory coupled to the equalizer, the memory to store the first of the clusters in a first memory section and the second of the clusters in a second memory section,
wherein the switching device is disposed such that it connects a number of the plurality of filters corresponding to the first number to form a first overall filter and connects a number of the plurality of filters corresponding to the second number to form a second overall filter, and the switching device enables the first overall filter to receive the first of the clusters stored in the first memory section and enables the second overall filter to receive the second of the clusters stored in the second memory section.
2. A receiver according to claim 1 , wherein the equalizer is disposed such that the data signal is feedable to the first overall filter and to the second overall filter.
3. A receiver according to claim 2 , wherein the equalizer is disposed such that the data signal is feedable to the second overall filter via a delay element.
4. A receiver according to claim 1 , wherein the memory element is disposed such that the stored data is retrieved as desired.
5. A receiver according to claim 1 , wherein the equalizer has at least three filters.
6. A receiver according to claim 1 , comprising: an estimation unit for determining the channel profile.
7. A receiver according to claim 6 , wherein the estimation unit is disposed such that the channel profile is determined based on a pilot signal that differs from the data signal.
8. A receiver according to claim 1 , wherein the equalizer is switchable to function in a diversity mode.
9. A receiver according to claim 1 , wherein the selection device determines a third number and the switching device is disposed such that it connects a number of filters corresponding to the third number to form a third overall filter.
10. A receiver according to claim 1 , wherein the first signal energy cluster has a width greater than a width of the second signal energy cluster, the first number being associated with the first signal energy cluster and having a value greater than a value of the second number.
11. A receiver according to claim 1 , wherein the number of the plurality of filters corresponding to the first number is greater than the number of the plurality of filters corresponding the second number.
12. A receiver according to claim 1 , wherein each of the first and second overall filters comprises a plurality of delay elements each individually coupled to the memory via a multiplier that is to receive a filter coefficient.