Multiple-input-multiple-output (MIMO) channel estimation
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsCristian Czegledi, Lei Bao, Sinh Nguyen
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Abstract
Method for propagation channel estimation in an N×M Multiple-Input-Multiple-Output (MIMO) communication system comprising a transmitter (202) comprising N transmit antennas and a receiver (204) comprising M receive antennas and a MIMO equalizer (206) comprising multiple taps, where N>1 and M>1. The method includes producing (s402) a single tap equalizer (Q) based on a multi-tap equalizer (Q). The method also includes producing (s404) an inverse effective-channel estimate (Qe) based on Q, The method also includes inverting (s406) Qe to produce an effective-channel estimate (He), The method also includes producing (s408) Ha based on He—wherein Ha can be used to determine one or more performance metrics.
Claims19
A method for propagation channel estimation in an N×M Multiple-Input-Multiple-Output (MIMO) communication system comprising a transmitter comprising N transmit antennas and a receiver comprising M receive antennas and a MIMO equalizer comprising multiple taps, where N>1 and M>1, the method comprising:
- producing a single tap equalizer (Q) based on a multi-tap equalizer (Q);
- producing an inverse effective-channel estimate (Qe) based on Q;
- inverting Qe to produce an effective-channel estimate (He);
- and
- producing Ha based on He, wherein Ha can be used to determine one or more performance metrics.
A channel estimator, the channel estimator comprising:
- processing circuitry;
- and
- a memory, the memory containing instructions executable by the processing circuitry, whereby the channel estimator is operative to perform a method comprising:
- producing a single tap equalizer (Q) based on a multi-tap equalizer (Q);
- producing an inverse effective-channel estimate (Qe) based on Q;
- inverting Qe to produce an effective-channel estimate (He);
- and
- producing Ha based on He, wherein Ha can be used to determine one or more performance metrics.
Dependencies are inferred from the claim text.