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pilot in LTE standards and some parameters

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Hello,
I'm designing LTE downlink using matlab. So I wonder if somebody help me with the parameters by answering the question below:
I've read the standard but to apply them on matlab I got convused.
- number of FFT points
- pilot location (is need extension)
- cyclic prefix

Is the subcarrier sam as the number of bit per symbol or are they different

last question, I got code from mathworks writen by Mohammad Tahir and he defined the SNR as below
Code: 
EsNo= EbNo_dB + 10*log10(52/64)+ 10*log10(64/80); % symbol to noise ratio

snr= EsNo - 10*log10(64/80); % snr as to be used by awgn fn.

why he add the parts:
Code: 
10*log10(52/64)+ 10*log10(64/80)
and whay he sub this part:
Code: 
- 10*log10(64/80)
in the final snr?

thanks inadvance

Ref.
https://www.mathworks.com/matlabcen...-in-rayleigh-enviroment-using-bpsk-modulation[/url]
 

I only know that LTE has a 4.69 µs cyclic prefix and that it uses 2048 point FFT, I don't know whether the number of FFT points is changed with channel BW like WiMAX or not.
 

    F

    First One

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Thanks ahmed,
I got the number of points in the FFT and cyclic prefix. So I'm waiting for others to help in the parts of the code i gave.

helps are really appreciated
 

FFT side is different to the number of subcarrier..

I am also confused by the snr definition
 

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