USING THE SAME MULTIPLEXED RADIO RESOURCE FOR PILOT AND INFORMATION SIGNALS
First Claim
1. A method of communicating information over a propagation channel between a transmitter and a receiver comprising:
- transmitting an information signal using a multiplexed radio resource; and
simultaneously transmitting a pilot sequence using the same multiplexed radio resource.
1 Assignment
0 Petitions
Accused Products
Abstract
A method and apparatus for using the same multiplexed radio resource to simultaneously transmit a pilot sequence and an information signal is described herein. After traveling through a multi-path propagation channel, a receiver receives the transmitted pilot and information signals, correlates the received signal with the known pilot sequence to determine one or more correlation values, and estimates the multi-path propagation channel based on the correlation values. The receiver uses the channel estimates to process the received signal to remove the pilot sequence from the information signal. By using the same multiplexed radio resource to transmit both the pilot sequence and the user information signal, the present invention enables more radio resources to be allocated to the information signal without compromising pilot-based channel estimation, and provides more regular access to the transmitted pilot sequence at the receiver.
-
Citations
53 Claims
-
1. A method of communicating information over a propagation channel between a transmitter and a receiver comprising:
-
transmitting an information signal using a multiplexed radio resource; and simultaneously transmitting a pilot sequence using the same multiplexed radio resource. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
- 15. A wireless device for communicating information over a propagation channel comprising a transmitter configured to simultaneously transmit a pilot sequence and an information signal using the same multiplexed radio resource.
-
29. A method of processing a signal received at a receiver, wherein the received signal comprises a linear combination of a known pilot sequence and an information signal transmitted over a propagation channel using the same multiplexed radio resource, the method comprising:
-
correlating the received signal with the known pilot sequence to determine one or more correlation values; determining channel estimates for the propagation channel based on the one or more correlation values; and processing the received signal using the determined channel estimates to remove the pilot sequence from the information signal. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
-
-
42. A wireless device comprising a receiver to receive a wireless signal, wherein the received signal comprises a linear combination of a known pilot sequence and an information signal transmitted over a propagation channel using the same multiplexed radio resource, the receiver comprising:
-
a correlator to correlate the received signal with the known pilot sequence to determine one or more correlation values; a channel estimator to determine channel estimates for the propagation channel based on the one or more correlation values; and a signal processor to process the received signal using the determined channel estimates to remove the pilot sequence from the information signal. - View Dependent Claims (43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53)
-
Specification