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MT Map Bits to CPM Symbols (G Dataflow)

Last Modified: January 9, 2017

Maps an incoming bit stream to symbols comprised of CPM frequency deviations.

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input bit stream

The incoming bit stream to be mapped to symbols.

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symbol map

A two-dimensional array of desired frequency deviations.

Each column corresponds to a symbol, with the binary representation of the column index being the mapped bit-representation of the symbol. Each row corresponds to a modulation index in the order in which it appears in the modulation index, h(i) parameter of MT Generate CPM System Parameters (M) or MT Generate CPM System Parameters (map). To specify a prebuilt map, unbundle the symbol map element from the CPM system parameters cluster generated by MT Generate CPM System Parameters (M) or MT Generate CPM System Parameters (map).

Default: empty array

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error in

Error conditions that occur before this node runs. The node responds to this input according to standard error behavior.

Default: no error

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reset?

A Boolean that determines whether stored state information is cleared on each call to this node.

When the input bit stream is not comprised of an integer number of symbols, the carryover bits are buffered.

TRUE Clears the buffered data, checks the input parameters on a first call, and reflects any change in the input parameter values during subsequent iterations.
FALSE Adds the buffered data to the beginning of data from next iteration, in continuous operations.

Default: TRUE

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symbols

An array of CPM frequency deviations with a one-to-one mapping to the input bit stream based on the specified CPM symbol map.

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Note  

Wire this parameter to MT Apply Pulse Shaping Filter MSK, CPM to generate the oversampled baseband complex waveform.

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error out

Error information. The node produces this output according to standard error behavior.

Where This Node Can Run:

Desktop OS: Windows

FPGA: Not supported


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