Hi, I am trying to find out how the OFDM is configured in the WARP v3. I mainly refer on materials from this website In the section 1. Overview (3). Model files list, there are several Matlab files. I was reading the simulink model last week and have some problems about this model. (1) In 802.11a OFDM, there are data scrambler, convolutional encoder, interleaver, modulator etc.

What are the corresponding modules in this model? (2) If I want to transmit a data sequence, how can I pass to this model?

If we consider the model is a function, are there any input parameters that I can pass my own data to? I looked into the model. I guess the data is stored in advance in the ROM in the block of 'Pkt Buffer BRAM Interface/PLB Pkt Buffer' and the ROM is initialized by the mfile(ofdm_tx_supermimo_init). (3) If we want to change the modulation type, is it easy to modify the model? If it is, which modules should we modify? (4) Are there any annotation documents about the model? I guess it would be useful, as it is really a big project.

Last edited by Junqing Zhang (2012-Dec-08 09:20:00). One thing to clarify- the OFDM PHY is one part of the overall. The reference design implements both the PHY and all the supporting cores/code to use the PHY in real-time in hardware. The PHY is not designed for use by itself in hardware- it requires attachment to a processor bus and is configured/controlled from software running on the processor. The code implements a framework for building custom MACs that use the PHY. I would definitely recommend starting with the OFDM ref design and working down instead of starting with the PHY and trying to re-create a working MAC+PHY design. As for the PHY specifics, our OFDM model implements scrambling and convolutional coding.

Converting serial MATLAB applications to parallel MATLAB applications. Consult the MATLAB Parallel Computing. MATLAB Parallel Computing Toolbox Tutorial. Modeling, simulation and synthesis: From Simulink to VHDL generated hardware. Overview of the Simulink to VHDL conversion process. Using a Parallel to Serial Converter with a DryCal 1.0 Introduction The DC-1 and DC-Lite can be fitted with a parallel-to-serial conv erter in order to download. Vivado Design Suite Tutorial. Using Simulink. Change sample rates in a multi-rate DSP design and then convert a serial data stream to a parallel data word.

It does not implement an interleaver. Hi murphpo, I have another question about the IFFT in OFDM. In the simulink model, IFFT is implemented by the Xilinx LogiCORE IP FFT v7.1.

You configured the transform length of the core 64. According to the datasheet, the transform length is the desired point size. I guess this is the same as the transform size(that is N). Is this the number of subcarriers in OFDM? If it is, in the OFDM implementation, we only use 52 subcarriers(48 for data and 4 for pilots), so we have to set the rest 12 inputs(i mean, xn_re and xn_im) as 0.

Corel Photoimpact X3 Review. In some OFDM tutorials(for example this one in page 19, ), there are Serial to Parallel conversion before the IFFT and Parallel to Serial conversion after IFFT. Here in the implementation by Xilinx IP core, the core should get and output the data one by one. So there are no Serial to Parallel conversion and Parallel to Serial conversion here. Do you have any annotation documents about this simulink model? Could you send a pdf copy to me if you have?