Method for estimating a time invariant transmission channel, and corresponding receiver

A method for processing an analog channel signal from a transmission channel, the analog channel signal conveying symbol frames, the transmission channel being linear and time invariant for a duration of at least one frame, the method comprising:

• analog-digital converting of the analog channel signal to generate a digital channel signal;
• performing a channel estimation digital processing of the digital channel signal;
• the channel estimation digital processing comprising
• for the at least one frame, generating at least three transfer functions of the transmission channel, the at least three transfer functions respectively associated with at least three reference symbols of the at least one frame, and
• averaging processing of the at least three transfer functions to generate an average transfer function;
• and
• decoding of symbols of the at least one frame following the at least three reference symbols using the average transfer function.

A method for processing an analog channel signal from a transmission channel, the method comprising:

• converting of the analog channel signal to a digital channel signal;
• performing a channel estimation digital processing of the digital channel signal;
• the channel estimation digital processing comprising
• for at least one frame, generating a plurality of transfer functions of the transmission channel, the plurality of transfer functions respectively associated with a plurality of reference symbols of the at least one frame, and
• averaging processing of the plurality of transfer functions to generate an average transfer function;
• decoding of symbols of the at least one frame following the plurality of reference symbols using the average transfer function.

A receiver comprising:

• an input stage to be coupled to a transmission channel and configured to deliver an analog channel signal from the transmission channel, the analog channel signal conveying symbol frames;
• an analog-digital converter configured to convert the analog channel signal to a digital channel signal;
• and
• a processor configured to
• perform a channel estimation digital processing of the digital channel signal,
• for at least one frame, generate a plurality of transfer functions of the transmission channel, the plurality of transfer functions respectively associated with a plurality of reference symbols of the at least one frame,
• average the plurality of transfer functions to generate an average transfer function, and
• decode of symbols of the at least one frame following the plurality of reference symbols using the average transfer function.