04 | Keysight | N7617B Signal Studio for WLAN 802.11a/b/g/j/p/n/ac/ah/ax - Technical Overview

Signal Studio’s advanced mode capabilities provide additional features to help you

create IEEE 802.11 WLAN standard-compliant signals for testing receiver designs in all

stages of development. Use the baseband signal to perform demodulation and decoding

verification on ASIC and DSP chips. To thoroughly test the demodulation capabilities

of a receiver, a fully-coded test signal is necessary. This level of coding enables you to

determine if each functional stage of a receiver is operating correctly and enables you to

use this test signal to perform PER measurements.

– Enable or disable channel coding, scrambling and interleaving

– Configure MAC header settings, MAC FCS, sequence control, data type, and data

length

– A multi-frame waveform with an incrementing Sequence Control field can be created

for PER testing

– For the 802.11n, 802.11ac and 802.11ah options, the software also supports

Aggregation MPDU mode and LDPC encoding

– Test MIMO receivers with up to 4 antennas for 802.11n and 802.11ah or up to 8

antennas for 802.11ac and 802.11ax (hardware dependent). Choose the number of

transmit chains and space-time streams, and select direct mapping or configure a

spatial expansion matrix. The effects of fading can also be incorporated into a longer

waveform file with MIMO channel modeling. Users can choose one of the 802.11n or

802.11ac channel models (A through F), or select a user-defined channel model. A

beamforming matrix can be added for 802.11ac.

– Support 802.11ax OFMDA testing with configuration of different number and

location of allocated Resource Units (RU) in the 20/40/80/80+80/160 MHz signal

bandwidths. For each RU, the user can further configure Single-User or Multi-User

MIMO and the spatial mapping will be applied at the RU level instead of the entire

signal bandwidth.

Receiver Test

Figure 2. Generate fully channel-coded signals to evaluate the PER of your receiver with Keysight X-Series signal

generators and Signal Studio’s advanced capabilities.