Program is not working

2012 3 18
3 个回答
更新时间：2020 12 11
3 次查看（30 天）

0 个投票

I got error saying that ??? Undefined function or method 'ceil' for input arguments of type 'logical'.
Error in ==> ray at 22 y_mod=modulate(modem.pskmod(alphabet_M),par);
Can you help me with this?

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Jan
Jan 2012-3-18
I assume, that the error message contains also the line with the ceil() command.

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回答（3 个）

Walter Roberson
Walter Roberson 2012-3-18

1 个投票

Convert your input data from datatype logical to one of the numeric datatypes, such as uint8(par)

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KARTHICK
KARTHICK 2012-3-18
Can you tell how to convert?
I don't know.please!
Walter Roberson
Walter Roberson 2012-3-18
I am making a guess about which parameter is the problem.
Try the line
y_mod=modulate(modem.pskmod(alphabet_M),uint8(par));
KARTHICK
KARTHICK 2012-3-19
Still its showing error.But this time different error
??? Error using ==> modem.abstractMod.checkModInput at 35
Input X must be an integer-valued double-precision matrix.
Error in ==> ray at 22
y_mod=modulate(modem.pskmod(alphabet_M),uint8(par));
KARTHICK
KARTHICK 2012-3-19
I need a MATLAB code for concatenated channel modeling (i.e)The input must be modulated and encoded.Then it is allowed to pass through AWGN cchannel and Rayleigh fading channel.The result is now decoded,demodulated and error rate should be calculated. The input is 64 bit sequence. I need a MATLAB code. Can you help with this? Please!

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Yasin
Yasin 2012-5-15

0 个投票

I think that, it should be right:
y_mod=modulate(modem.pskmod(alphabet_M),double(par));
Shivani S
Shivani S 2020-12-11

0 个投票

Undefined function 'pskmod' for input arguments of type 'double'.
Error:
bp=pskmod(b,2)
can u help me with this error?

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Walter Roberson
Walter Roberson 2020-12-11
You need the Communications Systems toolbox licensed and installed.

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