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Observer
Observer
4,895 Views
Registered: ‎11-10-2008

Problems with System Generator!!!!

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Hi,
we created a OFDM model in Simulink and It was right when we did the simulation . However ,when the model was complied to HDL Netlist ,we discovered (in ISE Sources window) that some instances were lost,those instances are as follows:
?inst - C_COUNTER_BINARY_V7_0
?inst - BLKMEMSP_V6_1
?inst - C_DIST_MEM_V7_1
?inst - C_DDS_V4_1
?inst - C_SHIFT_RAM_V7_0
?inst - BLKMEMDP_V6_1
and there are also some clock problems  listed as follow:
in xlclockdriver_1:
?clr_reg - synth_reg_w_init
?ce_reg - synth_reg_w_init
in xlclockdriver_5:
?clr_reg - synth_reg_w_init
?ce_reg - synth_reg_w_init

Version is ISE 9.2,SystemGenerator 9.2,and Matlab 2007a.

we checked those instances in the simulink model ,but can't find them,I think it may have something to do with my software, but we can't solve the problem!!!please help!!!

Regards
james chan
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Contributor
Contributor
5,163 Views
Registered: ‎09-04-2008

Re: Problems with System Generator!!!!

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Hi,

 

Your OFDM  model uses an IP core or you have built  your model from scratch?

 

i have implemented a simplified OFDM model ( as per the 802.16d standard) with channel coding, and i have not faced such problem !.

 

Can you post   the schematic of your design ? so i can take a look at  your design.

 

Regards,

View solution in original post

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Contributor
Contributor
5,164 Views
Registered: ‎09-04-2008

Re: Problems with System Generator!!!!

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Hi,

 

Your OFDM  model uses an IP core or you have built  your model from scratch?

 

i have implemented a simplified OFDM model ( as per the 802.16d standard) with channel coding, and i have not faced such problem !.

 

Can you post   the schematic of your design ? so i can take a look at  your design.

 

Regards,

View solution in original post

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Observer
Observer
4,854 Views
Registered: ‎11-10-2008

Re: Problems with System Generator!!!!

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thank you !!! i want to complete a OFDM tranismiter based 802.11a and i don't know how to  post the picture to the web!!!
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Visitor
Visitor
4,075 Views
Registered: ‎03-15-2009

Re: Problems with System Generator!!!!

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hello mazene.. i have a question, if you could help me with your design.. i'm making a modem ofdm according to 802.16d but i'm having problems with some blocks. ex fft i cant configure it the right way.. in the modulator side

 

could you upload your file?

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