Why I am getting error while using qammod function ?

2024 10 25
1 个回答
回答已采纳
更新时间：2024 10 26
24 次查看（30 天）
Ran in:

0 个投票

Ran in:
Hi
I am using matlab R2014a and I using the code below :
%% Simulation Parameters
numBits = 20000;
modOrder = 16;
%% Creat a source signal and apply 16-QAM modulation
srcBits = randi([0 1],numBits,1);
modOut = qammod(srcBits,modOrder,'InputType','Bit','UnitAveragePower',true);
%% Apply AWGN
SNR = 15;
chanOut = awgn(modOut,SNR);
scatterplot(chanOut)
%% Demodulate received signal
demodOut = qamdemod(chanOut,modOrder,'OutputType','Bit','UnitAveragePower',true);
I should have got the figuer above. But I am having the following error instead !
( Note : I run this code while typing my question and got the result above )
Error using qammod (line 28)
Too many input arguments.
and line 28 is found here :
27 - if(nargin>4)
28 - error(message('comm:qammod:numarg2'));
29 - end
thank you

2 个评论
显示 无 隐藏 无

Walter Roberson
Walter Roberson 2024-10-25
You should double-check your help documentation.
I suspect that back in R2014a that there was no support for 'UnitAveragePower'
majdi Khlfalla
majdi Khlfalla 2024-10-26
编辑：majdi Khlfalla 2024-10-26
@Walter Roberson yes, I did some research and found that problem was my matlab version. And instead of averaging power, I have to noramlize it in separate step. Thank you walter for your help

请先登录，再进行评论。

请先登录，再回答此问题。

 采纳的回答

Saurabh
Saurabh 2024-10-25

1 个投票

Hi @majdi Khlfalla,
I've encountered a similar issue in the past, and I was able to resolve it by upgrading my MATLAB version to R2016a or later.
I Hope this helps

更多回答（0 个）

类别

在 帮助中心 和 File Exchange 中查找有关 PHY Components 的更多信息

产品

版本

R2014a

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by