Cedric Roux
56c66c09aa
Pre-ci test passed git-svn-id: http://svn.eurecom.fr/openair4G/trunk@4000 818b1a75-f10b-46b9-bf7c-635c3b92a50f
53 lines
1.5 KiB
Matlab
53 lines
1.5 KiB
Matlab
function mcs = get_mcs(dci_pdu, format)
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% mcs = get_mcs(dci_pdu,format)
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% dci_pdu is a vector of unit16 containing
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% format is one of the following strings
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% {format0,
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% format1,
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% format1A,
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% format1B,
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% format1C,
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% format1D,
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% format2,
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% format2_2A_L10PRB,
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% format2_2A_M10PRB,
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% format2_4A_L10PRB,
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% format2_4A_M10PRB,
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% format2A_2A_L10PRB,
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% format2A_2A_M10PRB,
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% format2A_4A_L10PRB,
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% format2A_4A_M10PRB,
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% format3};
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if nargin < 2
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format = 'format2A_2A_M10PRB';
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end
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switch format
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case 'format2A_2A_M10PRB'
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% this is for format type 2A, 5MHz, TDD, 2 antenna ports more than 10 PRB,
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% 42 bits
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% the mcs is in bits 24-28, so in bits 8-12 of the second word of the pdu
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mask = uint16(0);
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mask = bitset(mask,8);
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mask = bitset(mask,9);
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mask = bitset(mask,10);
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mask = bitset(mask,11);
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mask = bitset(mask,12);
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mcs = bitand(mask,dci_pdu(2));
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mcs = bitshift(mcs,-8);
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case 'format0'
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% this is for format 0, 5MHz, TDD, 27 bits
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% the mcs is in bits 11-15
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mask = uint16(0);
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mask = bitset(mask,11);
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mask = bitset(mask,12);
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mask = bitset(mask,13);
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mask = bitset(mask,14);
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mask = bitset(mask,15);
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mcs = bitand(mask,dci_pdu(1));
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mcs = bitshift(mcs,-11);
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otherwise
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error('format not yet implemented or wrong');
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end
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