Methods and systems for estimating a channel response by applying bias to an initial channel estimate
AssigneeEricsson Inc.
InventorsLeonid Krasny, Dennis Hui
Life of this patent
Estimating the term…
Abstract
A channel response may be estimated from training symbols that are received over a channel, by determining an initial channel estimate from the training symbols and applying bias to the initial channel estimate to obtain a biased channel estimate. The biased channel estimate may then be used to demodulate a signal that is received over the channel.
Claims24
A method of estimating a channel response from training symbols that are received over a channel, the method comprising:
- determining an initial channel estimate only from the training symbols that are received over the channel;
- applying bias to the initial channel estimate to obtain a biased channel estimate;
- and
- using the biased channel estimate to demodulate a signal that is received over the channel.
A method of estimating a channel response, the method comprising:
- receiving training symbols that are received over a channel to determine an initial channel estimate;
- applying bias to the initial channel estimate to obtain a biased channel estimate that reduces error in an estimated channel response compared to the initial channel estimate;
- and
- using the biased channel estimate to demodulate a signal that is received over the channel.
A system for estimating a channel response only from training symbols that are received over a channel, the system comprising:
- an initial channel estimating circuit that is configured to determine an initial channel estimate from the training symbols that are received over the channel;
- a bias computing circuit that is configured to apply bias to the initial channel estimate to obtain a biased channel estimate;
- and
- a demodulator that is configured to use the biased channel estimate to demodulate a signal that is received over the channel.
A system for estimating a channel response only from training symbols that are received over a channel, the system comprising:
- a receiver circuit configured to receive training symbols over a channel and determine an initial channel estimate;
- and
- a bias computing circuit that is configured to apply bias to the initial channel estimate to obtain a biased channel estimate that reduces error in an estimated channel response compared to the initial channel estimate;
- and
- a demodulator that is configured to use the biased channel estimate to demodulate a signal that is received over the channel.
A wireless receiver comprising:
- a front end that is configured to receive training symbols over a channel;
- an initial channel estimating circuit that is configured to determine an initial channel estimate only from the training symbols that are received over the channel;
- a bias computing circuit that is configured to apply bias to the initial channel estimate to obtain a biased channel estimate;
- and
- a demodulator that is configured to use the biased channel estimate to demodulate a signal that is received over the channel.
A wireless receiver comprising:
- a front end that is configured to receive training symbols over a channel and determine an initial channel estimate;
- a bias computing circuit that is configured to apply bias to the initial channel estimate to obtain a biased channel estimate that reduces error in an estimated channel response compared to the initial channel estimate;
- and
- a demodulator that is configured to use the biased channel estimate to demodulate a signal that is received over the channel.
Dependencies are inferred from the claim text.