estimation, equlization and detection in ofdm

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ammaralwazzan

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what is the difference between estimation, equlization and detection in communication systems? specially in ofdm technique ?
 

Coherent and noncoherent detection
◮ absolute modulation −→ channel equalisation, coherent detection
◮ differential modulation −→ noncoherent detection

2. Estimation principles
◮ least squares
◮ MMSE

3. Data estimation
◮ least-squares design −→ zero-forcing equaliser
◮ MMSE design −→ MMSE equaliser
◮ equalisation in OFDM: one multiplication per subcarrier
◮ GDFE, THP, TEQ

Details
https://www.eit.lth.se/fileadmin/eit/courses/eit140/ofdm_equ.pdf
 

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