Method for Channel Estimation When Using Different Modulation Methods Within One Signal Interval
AssigneeIntel Mobile Communications GmbH
InventorsMarkus Hammes, Andre Neubauer, Michael Speth
Life of this patent
Estimating the term…
Abstract
The method is based on a signal interval (DB) which comprises a first part (ET) (which is modulated using a first modulation method (GFSK)) of the signal interval and a second part (which is modulated using a second modulation method (DMPSK)) of the signal interval. The channel parameters (c(i)) relating to the second part (which is modulated using the second modulation method) of the signal interval are determined using a received data signal (a(i); p(i)) from the first part (ET) of the signal interval (DB).
Claims20
A method for determination of channel parameters in a mobile radio receiver relating to a second part of a signal interval, with the signal interval comprising a first part which is modulated using a first modulation method of the signal interval and a second part which is modulated using a second modulation method of the signal interval, with the first part and the second part being filtered using different pulse shapes, the method comprising the following step:
- determining the channel parameters relating to the second part which is modulated using the second modulation method of the signal interval from channel parameters, which are estimated independently of the pulse shape, of the first part of the signal interval, using the pulse shape of the second part of the signal interval.
A method for determination of channel parameters in a mobile radio receiver relating to a second part of a signal interval, with the signal interval comprising a first part which is modulated using a first modulation method of the signal interval and a second part which is modulated using a second modulation method of the signal interval, having the following step:
- determining the channel parameters relating to the second part which is modulated using the second modulation method of the signal interval corresponding to a data burst using a received data signal from the first part of the signal interval, and
- determining channel parameters relating to the first part of the data burst using a received data signal from the first part of the data burst, with these channel parameters describing only the modulation-independent part of the channel.
A method for determination of channel parameters in a mobile radio receiver relating to a second part of a signal interval, with the signal interval having a first part which is modulated using a first modulation method of the signal interval and a second part which is modulated using a second modulation method of the signal interval, the method comprising the following step:
- determining the channel parameters relating to the second part of the signal interval using a received data signal from the first part of the signal interval, wherein the first modulation method describes GFSK modulation, and the second modulation method describes DMPSK modulation where M≧4.13.
Dependencies are inferred from the claim text.