ammaralwazzan
Newbie level 6
hi,,
i am doing a code for MC CDMA system using rayleighchan
First of all i write a matlab code for OFDM-CDMA system. the following picture shows the structure of the system :
but i have some problem with the result :
CP = 0 , CP = 4 (1/16 from OFDM_Symbol_Size), CP = 8 (1/8 from OFDM_Symbol_Size), CP = 16 (1/4from OFDM_Symbol_Size)
change in size of cyclic prefix:
why i got no change in the BER ? also when i change the size of FFT from 64 to 128 to 256 there is no change !!
any help will be appreciated
i am doing a code for MC CDMA system using rayleighchan
First of all i write a matlab code for OFDM-CDMA system. the following picture shows the structure of the system :
but i have some problem with the result :
CP = 0 , CP = 4 (1/16 from OFDM_Symbol_Size), CP = 8 (1/8 from OFDM_Symbol_Size), CP = 16 (1/4from OFDM_Symbol_Size)
change in size of cyclic prefix:
why i got no change in the BER ? also when i change the size of FFT from 64 to 128 to 256 there is no change !!
any help will be appreciated