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US 2004/0165683 A1Published application
Channel estimation for communication systems
OwnerAlok Kumar Gupta, Rajiv Vijayaninventors
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Abstract
An improved channel estimation is disclosed. In one embodiment, initial channel estimation is performed using known training data sequence. The data packet received is demodulated based on the initial channel estimates, de-interleaved and decoded. The decoded data is then is re-encoded, interleaved and modulated to generate additional training symbols for updating the channel estimates throughout the received data packet.
Claims25
Apparatus in a communication system comprising:
- a decoder configured to decode data based on a channel response;
- and
- a channel estimating module coupled to the decoder, the channel estimating module configured to determine the channel response using at least one training symbol, and to update the channel response based on the decoded data.
A method for channel estimation in a communication system comprising:
- estimating a channel response using at least one training symbol,
- decoding data based on the channel response;
- and
- updating the channel response based on the decoded data.
1 more element
An apparatus for channel estimation comprising:
- means for decoding data based on a channel response;
- and
- means for determining the channel response using at least one training symbol, and for updating the channel response based on the decoded data.
Apparatus for channel estimation comprising:
- means for decoding data based on a channel response;
- and
- a machine readable medium comprising a code segment for determining the channel response using at least one training symbol, and for updating the channel response based on the decoded data.
Dependencies are inferred from the claim text.