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CC3200 802.11n 40MHz Channel Support

Greenja
Guru 22270 points

Other Parts Discussed in Thread: CC3200, CC3100

Hello,

Is the 802.11n 40MHz mode available in any form on the CC3200?  If not, will any version of the CC32xx support 20/40 mode?

Or, are there any provisions in the API to support or test this this in non commercial environment?

Thanks,

  • 0
    TI__Expert 4345 points

    Hello,

    The Wi-Fi Network Processor in CC3200 and CC3100 supports 20 MHz Channels. This channel bandwidth offers sufficient bandwidth for Internet of Things applications.

    You can find more details on the features of the Wi-Fi and Internet Protocols, features and performances in the Release Notes here:

    http://processors.wiki.ti.com/index.php/CC32xx_Release_Notes

    Adnan

  • 0 in reply to Adnan
    Guru 22270 points

    Hello Adnan,

    The release notes seems to be missing any reference to the 20MHz Channel support feature.  Also, the 802.11 b/g/n is shown in the WiFi and 802.11 b/g is in the Network Protocols section.

    The question on combining 2 channels to make up the 40MHz of the 802.11n was to see if you could get even more throughput.  

    Perhaps my question should have been, Can you combine two channels using 802.11n to achieve 40MHz through custom code or is the combination of channels restricted by the hardware of the CC32xx?

    Thanks,

  • 0 in reply to Greenja
    TI__Expert 4345 points

    Hello Greenja,

    Thanks for the feedback on the release notes, we will get this corrected.

    40 MHz Channels is an optional feature under WiFi 802.11n. WiFi Devices supporting this feature use 2 adjacent WiFi channels to achieve higher throughputs (typically > 50 Mbps). It requires 2 adjacent WiFi channels to be free and available which is typically not the case in crowded 2.4 GHz Wi-Fi environments.

    This feature implementation is done in the WiFi Radio. CC3200 and CC3100 WiFi does not support 40 MHz channels.

    Adnan