lteTransmitDiversityDecode

Orthogonal space frequency block code decoding

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Syntax

[out,csi] = lteTransmitDiversityDecode(in,hest)

Description

[out,csi] = lteTransmitDiversityDecode(in,hest) performs orthogonal space frequency block code (OSFBC) decoding of received symbols, in, and channel estimate, hest, returning the result in out.

example

Examples

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Open Live Script

This example shows orthogonal space frequency block code (OSFBC) decoding of PDSCH symbols, using ideal channel estimates.

Generate a resource grid using multiple antennas to transmit a single PDSCH codeword.

enb = lteRMCDL('R.11');
enb.TotSubframes = 1;
[~,txGrid] = lteRMCDLTool(enb,[1;0;0;1]);

Extract the PDSCH symbols from this transmit grid

[ind,indInfo] = ltePDSCHIndices(enb,enb.PDSCH,enb.PDSCH.PRBSet);        
pdschSym = txGrid(ind);

Create an ideal (identity) channel estimate

hest = permute(repmat(eye(enb.CellRefP),[1 1 indInfo.Gd]),[3 1 2]);

Deprecode the PDSCH symbols using the channel estimates

[out,csi] = lteTransmitDiversityDecode(pdschSym,hest);

Input Arguments

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Received input symbols, specified as a numeric matrix. It has size M-by-NRxAnts, where M is the number of received symbols for each of NRxAnts receive antennas.

Data Types: double
Complex Number Support: Yes

Channel estimate, specified as a 3-D numeric array. It has size M-by-NRxAnts-by-CellRefP. M is the number of received symbols in in. NRxAnts is the number of receive antennas. CellRefP is the number of cell-specific reference signal antenna ports.

Data Types: double
Complex Number Support: Yes

Output Arguments

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Decoded received symbols, returned as a complex-valued numeric column vector. It has size M-by-1, where M is the number of received symbols for each receive antenna.

Data Types: double
Complex Number Support: Yes

Soft channel state information (CSI), returned as a numeric column vector. It has size M-by-1, where M is the number of received symbols for each receive antenna. csi provides an estimate of the received RE gain for each received RE.

Data Types: double

Version History

Introduced in R2014a

See Also