Method and arrangement for channel estimation in a wireless communication system
AssigneeIPWireless, Inc.
InventorsPeter Darwood, Alan Jones
Life of this patent
Estimating the term…
Abstract
A method and arrangement (100) for PRACH burst channel detection in a UTRA TDD wireless communication system in which training sequences are constructed from a single periodic base code. Unwanted cross-correlation peaks, having magnitude less than correlation peaks, are removed (440) from the correlator outputs, maintaining optimal signal-to-noise ratio of the channel estimates, providing a low probability of false detection, and extending the cell size of a CDMA network to that determined by the guard period duration. The cell size can be extended further by ensuring that no transmissions are scheduled for the timeslot subsequent to that in which the channel estimation bursts are scheduled.
Claims22
An arrangement for channel estimation in a wireless communication system, the arrangement comprising:
- correlation channel estimation means for receiving input signals representative of channel information and for producing therefrom correlation channel estimate signals;
- correlation peak identification means coupled to the correlation channel estimation means for deriving from the correlation channel estimate signals representative of correlation peaks;
- and
- cross-correlation peak removal means coupled to the correlation channel estimation means and to the correlation peak identification means for removing cross-correlation peaks from the correlation channel estimate signals to produce improved channel estimate signals.
The arrangement of any preceding claim wherein the wireless communication system is a UMTS system.
A method for channel estimation in a wireless communication system, the method comprising:
- providing correlation channel estimation means receiving input signals representative of channel information and producing therefrom correlation channel estimate signals;
- providing correlation peak identification means coupled to the correlation channel estimation means, the correlation peak identification means deriving from the correlation channel estimate signals representative of correlation peaks;
- and
- providing cross-correlation peak removal means coupled to the correlation channel estimation means and to the correlation peak identification means, the cross-correlation peak removal means removing cross-correlation peaks from the correlation channel estimate signals to produce improved channel estimate signals.
A method for channel estimation in a wireless communication system, the method comprising:
- providing correlation channel estimation means receiving input signals representative of channel information and producing therefrom correlation channel estimate signals;
- and
- ensuring that no transmission occurs in a timeslot immediately following that in which channel estimation is performed.
Dependencies are inferred from the claim text.