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#1 2020-Jun-06 13:44:10

Lavender
Member
Registered: 2020-Apr-07
Posts: 20

In OFDM WiFi, how to transmit a single subcarrier.

In the example code wl_example_siso_ofdm_txrx.m on the official website, we can see that the indexes of pilot subcarriers and data subcarriers are shown below. What should I do when I need to send an empty subcarrier, such as #38 subcarrier.
SC_IND_PILOTS=[8 22 44 58];% Pilot subcarrier indices
SC_IND_DATA=[2:7 9:21 23:27 39:43 45:57 59:64];% Data subcarrier indices

I tried setting SC_IND_DATA=[38], I am not clear whether such a method can send a single subcarrier.


Thanks.

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#2 2020-Jun-07 10:54:26

murphpo
Administrator
From: Mango Communications
Registered: 2006-Jul-03
Posts: 5159

Re: In OFDM WiFi, how to transmit a single subcarrier.

First, please do not post the same question twice.

Modifying the SC_IND_ variables is the correct place to start with changing subcarrier allocation in the OFDM example scripts. That script can be used in simulation (WARPLab + hardware is not required) - this is an ideal setup to explore waveform-level changes and understand the effects at each stage of the Tx/Rx processing.

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#3 2020-Jun-08 02:12:53

Lavender
Member
Registered: 2020-Apr-07
Posts: 20

Re: In OFDM WiFi, how to transmit a single subcarrier.

ok, I see. I will have a try. Thanks for your reply.

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