The decision feedback equalizer determines an intersymbol interference (ISI) component in a first, current sample of the signal being processed.
A method and arrangement are proposed for compensating for intersymbol interference (ISI) in a multi-carrier transmission system.
Methods and apparatus are provided for prescribed response precoding schemes for signal transmission in channels with intersymbol interference.
A decision feedback equalizer (DFE) is controlled to equalize a current signal sample for intersymbol interference and/or other distortion caused by the communications channel.
When the distorted FM signal is received the equalization filter function (306) processes the distorted FM signal thereby producing electric pulse signals exhibiting minimal intersymbol interference.
A method and a system are disclosed for avoiding inter-layer inter-symbol interference.
The ISI component is subtracted from the current sample to generate an equalized sample.
Known symbols are inserted at the borders between different layers to avoid inter-layer inter-symbol interference.
The invention utilises that a diagonal layered multi-antenna transmission will not create inter-symbol interference, ISI, between different layers.
Compensation is based on the generation of an estimate of the ISI tail and subtracting this from the received signals.
In the case of linear modulations in presence of ISI, and of non-linear M-CPM modulations, the reception filter is a matched and whitened one.
By utilising a system using the present method problems with inter-layer inter-symbol interference between different data-streams can be avoided when changing transmit antenna for the data-streams.
Once the equalization setting matching the measured link loss is found in the table, the equalizer can be optimally set to reduce or eliminate intersymbol and other types of interference.
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