Channel selection exploiting multiple observations of the channel delay spread
AssigneeMotorola Mobility LLC
InventorsSandeep Krishnamurthy, Colin Frank, Kenneth Stewart
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Abstract
A method, a mobile system, and a user device for determining a delay spread are disclosed. A memory 306 may store a compound test value based on a multiburst history. The multiburst history may be a set of power delay profile decisions. A processor 304 may create a short power delay profile channel estimate and a long power delay profile channel estimate. The processor 304 may select a chosen power delay profile channel estimate based on the compound test value.
Claims20
A method for determining delay spread, comprising:
- storing a compound test value based on a historical multiburst set of power delay profile decisions;
- receiving a new transmission burst;
- creating a short power delay profile channel estimate and a long power delay profile channel estimate for the new transmission burst, wherein a delay spread of the long power delay profile channel estimate is larger than a delay spread of the short power delay profile channel estimate;
- combining each of the short power delay profile channel estimate and the long power delay profile channel estimate with the compound test value based on the historical multiburst for forming a new updated compound test value;
- and
- selecting a chosen power delay profile channel estimate from the short power delay profile channel estimate and the long power delay profile channel estimate, based on the new updated compound test value.
A mobile system for determining delay spread, comprising:
- a memory that stores a compound test value based on a historical multiburst set of power delay profile decisions;
- a processor that creates a short power delay profile channel estimate and a long power delay profile channel estimate for a new transmission burst which is received, where a delay spread of the long power delay profile channel estimate is larger than a delay spread of the short power delay profile channel estimate;
- wherein the memory further stores a new updated compound test value, based upon combining each of the short power delay profile channel estimate and the long power delay profile channel estimate with the compound test value based on the historical multiburst, when a new transmission is received;
- and
- wherein the processor further selects a chosen power delay profile channel estimate from the short power delay profile channel estimate and the long power delay profile channel estimate, based on the new updated compound test value.
A user device for determining delay spread, comprising:
- a memory that stores a compound test value based on a multiburst history;
- a processor that creates a short power delay profile channel estimate and a long power delay profile channel estimate for a new transmission burst which is received, where a delay spread of the long power delay profile channel estimate is larger than a delay spread of the short power delay profile channel estimate;
- wherein the memory further stores a new updated compound test value, based upon combining each of the short power delay profile channel estimate and the long power delay profile channel estimate with the compound test value based on the historical multiburst, when a new transmission is received;
- and
- wherein the processor further selects a chosen power delay profile channel estimate from the short power delay profile channel estimate and the long power delay profile channel estimate, based on the new updated compound test value.
Dependencies are inferred from the claim text.