Method of processing multi-path signals
View Patent ↗In the method of processing signals, multi-path signals are received, channel estimates for the received multi-path signals are determined, and a combining operation is applied to the multi-path signals, the combining operation being a function of a correlation matrix of the received multi-path signals, a correlation matrix of estimates for channels of the received multi-path signals, a cross-correlation matrix of the channels and channel estimates for the received multi-path signals, and the channel estimates.
1. A method of processing signals, comprising:
receiving multi-path signals using a rake receiver;
determining channel estimates using a channel estimation unit for the received multi-path signals;
applying combining operation using a combination unit to the multi-path signals to obtain a received signal, the combining operation being a function of a correlation matrix of the received multi-path signals, a correlation matrix of estimates for channels of the received multi-path signals, and a cross-correlation matrix of the channels and channel estimates for the received multi-path signals; and wherein
the correlation matrix of the received multi-path signals is a function of a correlation matrix of the received multi-path signal channels and a correlation matrix of noise on the received multi-path signal channels;
the correlation matrix of estimates for channels of the received multi-path signals is a function of the correlation matrix of the received multi-path signal channels and a cross-correlation matrix between effective noise and channel estimation error; and
the cross-correlation matrix of the channels and channel estimates for the received multi-path signals is a function of the correlation matrix of the received multi-path signal channels and a correlation matrix of error in the estimates for channels of the received multi-path signals.
2. The method of claim 1 , wherein the cross-correlation matrix of the channels and channel estimates for the received multi-path signals is a function of the correlation matrix of the received multi-path signal channels and the cross-correlation matrix between effective noise and channel estimation error.
3. The method of claim 1 , wherein the multi-path signals include at least one of correlated signals and uncorrelated signals.
4. The method of claim 1 , wherein the multi-path signals are received in at least one of a rake receiver and an antenna/sensor array.
5. The method of claim 1 , wherein the rake receiver includes multi-path clusters.
6. The method of claim 5 , wherein the multi-path signals are uncorrelated signals, and the combining operation is a simple weighting function.
7. The method of claim 1 , further comprising:
assigning a cluster of fingers to one multi-path, the cluster including at least two fingers and each of the at least two fingers having a fixed offset from one another.