Howtosignalprocessing
- What is channel estimation and equalization?
- What is channel estimation?
- What is channel equalizer?
- What is an equalizer in signal processing?
What is channel estimation and equalization?
Channel estimation provides information about distortion of the transmission signal when it propagates through the channel. This information is then used by equalizers so that the fading effect and/or co-channel interference can be removed and the original transmitted signal can be restored.
What is channel estimation?
The channel estimation algorithm extracts the reference signals for a transmit/receive antenna pair from the received grid. The least squares estimates of the channel frequency response at the pilot symbols are calculated as described in On Channel Estimation in OFDM Systems [2].
What is channel equalizer?
In telecommunication, equalization is the reversal of distortion incurred by a signal transmitted through a channel. Equalizers are used to render the frequency response—for instance of a telephone line—flat from end-to-end.
What is an equalizer in signal processing?
An equalizer is a device that can alter the spectral content of a signal. This can be done with any circuit that has an adjustable frequency response, the most familiar being the tone controls on a home stereo set. These tone controls typically affect the amplitude in two frequency regions, the treble and bass.
