Simple CDMA simulation tool user interface guide:
Note: every time when you change the entry for the changeable field, please enter the
return key to make it take effect.

Simulated bits : range 1-20. This indicates how many transmitted message bits
are simulated .

Proc. Gain: range 1-64. This indicates how many chips for one transmitted
message bit.

# of Txs: range 1-7. how many transmitters can be simulated in this tool.

Samples per carrier cycle: fixed field. Can not be changed for now by users.
It indicates how many simulated samples per carrier cycle.

Carrier Frequency normalized by chip rate: fixed field. Can not be changed for
now by users. It indicates that the modulation frequency that is normalized by
chip rate.

Choose mode: random chip sequence or orthogonal chip sequence mode can be
chosen from here. Currently the orthogonal mode is deactivated.

Simulate: click “simulate” button to run this simulation with the above
parameters. The calculated BER result is accumulated in the “BER” field.

BER: shows what’s the current accumulated Bit Error rate for this transmitter (its
ID is displayed in the Display Signal of Tx (ID#).

Clear BER: clicking this button will clear the current accumulated BER value in
the “BER” field.

Start Display: click “Start Display” to display the chip code, TX message signal,
the spreading signal , the RX signal, and the total spread signal from the
beginning.
Note: each page can only display 10 bits length. The total spread message will
be on the fifth display line on the bottom of the page.

Display Next Segment: click “Display Next Segment” to display the next 10 bits
segment on the screen for TX, Spreading, RX signals and total spread signal.

Display Signal of Tx (ID#): choose which transmitter you want display.