Parallel Gold Sequence Generation
This example shows how to use the Gold Sequence Generator block to generate multiple sequences in parallel for use in channel estimation.
The example model initializes the Gold Sequence Generator block with a vector that represents the init values for each of four channels. The block returns four independent Gold sequences.
You can generate HDL from the HDL Gold Sequence Generator subsystem.
The Gold Sequence Generator block has no block parameters. It is configured to match the polynomial and shift length required by LTE standard TS 36.212. You must initialize the sequence with a 31-bit value on the init port, and load the value into the block by setting the load signal to 1 for one cycle. This model has four init values, representing four channels.
The enable signal generates the Gold sequence values. The output is a vector of four values. The output valid signal indicates when the output data is available.
You can add data logging on the signals and use the Logic Analyzer to view the waveforms.
To generate and check the HDL code referenced in this example, you must have an HDL Coder™ license.
To generate the HDL code, use the following command:
makehdl('ltehdlGoldVectorModel/HDL Gold Sequence Generator')
To generate a test bench, use the following command:
makehdltb('ltehdlGoldVectorModel/HDL Gold Sequence Generator')