SSP Re-hosting System Development: Modeling of C Programs and Waveforms

Semantic Signal Processing Group

SSP Re-hosting System Development: Modeling of C Programs and Waveforms

Fangming He, Hong ManDepartment of Electrical and Computer Engineering

Stevens Institute of Technology

Sept. 2, 2010

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Outline

C language Modeling for Cognitive Linguistics

Waveform Modeling (System Level) for Cognitive Linguistics

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Waveform Layer

Coding Layer


C language Modeling

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2010 Spring 2010 Summer 2010 Fall

Variable Definition & Declaration *Function Definition *Condition Control:(If…else if … else, switch… case)

*

Loop Control(for, while) *Vector & Pointer *Recursive Function *Structure and Union

*

Memory Allocation *


CL Representation---- for

• for(initiation; condition; loop control){

statement 1;

statement 2;

}

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Initiation place condition cause statements & Loop control path statement place loop control place

Semantic Signal Processing Group 5

CL Representation ---- While


CL Representation ---- Switch Case

switch ( states ) { case condition1 is true: statement 1; break; case condition2 is true: statement 2; break; case condition is true: statement 3; break; ... default: statement N;}


CL Representation ---- Hierarchical Structure

<cause><path>

。。。。。。</path>

</cause>

<cause><path>

<cause><path>

。。。</path>

</cause><cause>

<path>。。。

</path></cause>

</path></cause>


Waveform Modeling for CL (1)

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PathEvery signal processing block can be expressed as a path.

ThingThe specific value of parameters in the signal processing block.

PlaceThe description of thing including the id, attributes and types of the thing.

ActionData flow control: the connection of different paths.

CauseConditions to trigger to enter some paths.



<action> <thing>random_source_x_0</thing> <thing>blks2_dxpsk_mod_0</thing> </action>

<action> <thing>blks2_dxpsk_mod_0</thing> <thing>gr_multiply_const_vxx_0</thing> </action>

<action> <thing>gr_multiply_const_vxx_0</thing> <thing>usrp2_sink_xxxx_0</thing> </action>

<action> <thing>usrp2_source_xxxx_0</thing> <thing>wxgui_constellationsink2_0</thing> </action>



<path name = "blks2_dxpsk_mod"> <place>id <thing>blks2_dxpsk_mod_0</thing> </place>

<place>_enabled <thing>True</thing> </place>

<place>type <thing>dqpsk</thing> </place>

<place>samples_per_symbol<thing>samps_per_sym</thing> </place>

<place>excess_bw <thing>0.35</thing> </place>

<place>gray_code<thing>True</thing> </place>

<place>_coordinate<thing>(468, 55)</thing> </place>

<place>_rotation<thing>0</thing> </place>

</path>

SSP Re-hosting System Development: Modeling of C Programs and Waveforms

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