16QAM-OFDM Modulator using Comm Toolbox in Simulink, What is the Number of Symbols?

I would like to build a 16QAM Coded OFDM Time Signal. Mainly to mimic an LTE 20MHz BW signal up converted to 800MHz for use in an RF model I'm building in Simulink.

I was going to have a random datastream of Fs = 20MHz that is then coded using the "Rectangular QAM Modulator BB Block" which then is inputted to the OFDM modulator to get the OFDM signal out. Then I would upsample using the Raised Cosine Filter to a proper sample rate to up convert to 800MHz. The problem I am running into is what the "Number of OFDM Symbols" is.

Do I need to convert the QAM serial signal into Parallel data streams first? Say my sample per frame is 20, I could then parallel this into 10x2 which is an FFT size of 10 (assuming no guard bands or DC null), and 2 symbols?

I guess I'm confused by the meaning of "Number of Symbols" even though it says it's the number of symbols in the time frequency grid.

[Aslam]

MODULATION BY USING SIMULUINK (QAM 16)

[Aslam]

Modulation by using simulink QAM

Answer 1

[Chandresh Vora]

Here is an example in the product that shows the use of QAM Baseband Modulator with OFDM Modulator - hope this helps.

http://www.mathworks.com/help/comm/examples/ieee-802-16-2004-ofdm-phy-link-including-space-time-block-coding.html

Thanks, Chandresh Vora

[Meshal Sinnen]

Hey Chandresh the link you shared doesn't work anymore - do you have any other link. I am trying to achieve the same thing as Nicco

[Chandresh Vora]

Hope this helps -

https://www.mathworks.com/help/comm/examples/ieee-802-16-2009-wirelessman-ofdma-phy-downlink-pusc.html