Error: Line 91 Column: 44 When calling a function or indexing a variable , use parentheses. Otherwise, check for mismatched delimiters
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% QAM Symbol mapper
qamMapper = comm.Rectangular*QAMModulator ( 'Modulator0rder' ), ...
2^bitsPerSubCarrier, 'BitInput' ; true, ...
'Normalization Method' ; 'Average power' );
回答（1 个）
Peng Li
2020-3-28
0 个投票
Matlab uses comma not ; Parameter names are without spaces. And you have an extra ) that doesn’t have a ( to match it.
9 个评论
kenny Ade
2020-4-16
kenny Ade
2020-4-16
Peng Li
2020-5-9
I don't know the QAMModulator function, but just a guess based on your implementaion
qamMapper = comm.Rectangular*QAMModulator ( 'Modulator0rder' ), ... % you have an extra ) here
2^bitsPerSubCarrier, 'BitInput' ; true, ... % replace ; with ,
'Normalization Method' ; 'Average power' ); % replace ; with ,
kenny Ade
2020-5-9
Peng Li
2020-5-9
I think I said that matlab uses comma not semicolon. And again you’d better copy the complete error message here.
kenny Ade
2020-5-9
Peng Li
2020-5-9
You need a comma before ... and there isn’t a .... no meaning of this. And again you’d better copy and paste the entire error message here otherwise I can just guess. All what I mentioned are syntax errors.
kenny Ade
2020-5-10
Walter Roberson
2020-5-10
qamMapper = comm.RectangularQAMModulator('Modulator0rder', 2^bitsPerSubCarrier, 'bitinput', true, 'NormalizationMethod', 'Average Power');
and if you want to split it over several lines,
qamMapper = comm.RectangularQAMModulator('Modulator0rder', 2^bitsPerSubCarrier, ...
'bitinput', true, ...
'NormalizationMethod', 'Average Power');
Note that comm.RectangularQAMModulator is going away, and it is recommended that you convert to qammod(). See https://www.mathworks.com/help/comm/ref/comm.rectangularqammodulator-system-object.html#mw_7ac8462e-0cd3-43aa-a9ff-2033c3c46d37
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2020-5-10
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