Program is not working

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?

[Jan]

I assume, that the error message contains also the line with the ceil() command.

Answer 1

[Walter Roberson]

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

[KARTHICK]

Can you tell how to convert?

I don't know.please!

[Walter Roberson]

I am making a guess about which parameter is the problem.

Try the line

y_mod=modulate(modem.pskmod(alphabet_M),uint8(par));

[KARTHICK]

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]

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!

Answer 2

[Yasin]

I think that, it should be right:

y_mod=modulate(modem.pskmod(alphabet_M),double(par));

Answer 3

[Shivani S]

Undefined function 'pskmod' for input arguments of type 'double'.

Error:

bp=pskmod(b,2)

can u help me with this error?

[Walter Roberson]

You need the Communications Systems toolbox licensed and installed.