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wlanNonHTConfig Properties

Define parameter values for non-HT format packet

The wlanNonHTConfig object specifies the transmission properties for the IEEE® 802.11™ non-high throughput (non-HT) format physical layer (PHY) packet.

After you create an object, use dot notation to change or access the object parameters. For example:

Create a wlanNonHTConfig object. Then modify the default setting for the PSDULength property.

cfgNonHT = wlanNonHTConfig;
cfgNonHT.PSDULength = 3025;

Non-HT Format Configuration

expand all

Modulation type for the non-HT transmission packet, specified as 'OFDM' or 'DSSS'.

Data Types: char | string

Channel bandwidth in MHz for OFDM, specified as 'CBW20', 'CBW10', or 'CBW5'. The default value of 'CBW20' sets the channel bandwidth to 20 MHz.

When channel bandwidth is 5 MHz or 10 MHz, only one transmit antenna is permitted and NumTransmitAntennas is not applicable.

Data Types: char | string

OFDM modulation and coding scheme to use for transmitting the current packet, specified as an integer from 0 to 7. The system configuration associated with an MCS setting maps to the specified data rate.

MCSModulationCoding RateCoded bits per subcarrier (NBPSC)Coded bits per OFDM symbol (NCBPS)Data bits per OFDM symbol (NDBPS)Data Rate (Mbps)
20 MHz channel bandwidth10 MHz channel bandwidth5 MHz channel bandwidth
0BPSK1/214824631.5
1BPSK3/41483694.52.25
2QPSK1/2296481263
3QPSK3/4296721894.5
416QAM1/241929624126
516QAM3/4419214436189
664QAM2/36288192482412
764QAM3/46288216542713.5

See IEEE Std 802.11-2012, Table 18-4.

Data Types: double

DSSS modulation data rate, specified as '1Mbps', '2Mbps', '5.5Mbps', or '11Mbps'.

  • '1Mbps' uses differential binary phase shift keying (DBPSK) modulation with a 1 Mbps data rate.

  • '2Mbps' uses differential quadrature phase shift keying (DQPSK) modulation with a 2 Mbps data rate.

  • '5.5Mbps' uses complementary code keying (CCK) modulation with a 5.5 Mbps data rate.

  • '11Mbps' uses complementary code keying (CCK) modulation with an 11 Mbps data rate.

For IEEE Std 802.11-2012, Section 16, only '1Mbps' and '2Mbps' apply

Data Types: char | string

DSSS modulation preamble type, specified as 'Long' or 'Short'.

  • When DataRate is '1Mbps', the Preamble setting is ignored and 'Long' is used.

  • When DataRate is greater than '1Mbps', the Preamble property is available and can be set to 'Long' or 'Short'.

For IEEE Std 802.11-2012, Section 16, 'Short' does not apply.

Data Types: char | string

Clock locking indication for DSSS modulation, specified as a logical. Bit 2 of the SERVICE field is the Locked Clock Bit. A true setting indicates that the PHY implementation derives its transmit frequency clock and symbol clock from the same oscillator. For more information, see IEEE Std 802.11-2012, Section 17.2.3.5 and Section 19.1.3.

Note

  • IEEE Std 802.11-2012, Section 19.3.2.2, specifies locked clocks is required for all ERP systems when transmitting at the ERP-PBCC rate or at a data rate described in Section 17. Therefore to model ERP systems, set LockedClocks to true.

Data Types: logical

Number of bytes carried in the user payload, specified as an integer from 1 to 4095.

Data Types: double

Number of transmit antennas for OFDM, specified as a scalar integer from 1 to 8.

When channel bandwidth is 5 MHz or 10 MHz, NumTransmitAntennas is not applicable because only one transmit antenna is permitted.

Data Types: double

References

[1] IEEE Std 802.11™-2012 IEEE Standard for Information technology — Telecommunications and information exchange between systems — Local and metropolitan area networks — Specific requirements — Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications.

Introduced in R2015b

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