Service manual

WLAN TX Measurements
R&S
®
FSV-K91/91n/91ac/91p
11Operating Manual 1176.7649.02 ─ 04
3 WLAN TX Measurements
The R&S FSV-K91/91n/91ac/91p application extends the functionality of the R&S FSV
signal analyzer to enable wireless LAN TX measurements in accordance with IEEE
standards 802.11 a, ac, b, g, j, n & p (assuming the required firmware option is instal-
led).
The following topics are described in this section:
3.1 Introduction to WLAN 802.11A, AC, B, G, J, N & P TX Tests.................................. 12
3.2 Basic Measurement Examples...................................................................................13
3.2.1 Setting Up the Measurement........................................................................................ 13
3.2.2 Performing the Main Measurement...............................................................................14
3.2.3 Setting up a MIMO measurement................................................................................. 14
3.3 Signal Processing of the IEEE 802.11a Application................................................ 21
3.3.1 Understanding Signal Processing of the IEEE 802.11a Application............................. 22
3.3.2 Literature to the IEEE 802.11a Application................................................................... 29
3.4 Signal Processing of the IEEE 802.11b Application................................................ 29
3.4.1 Understanding Signal Processing of the IEEE 802.11b Application............................. 30
3.4.2 Literature of the IEEE 802.11b Application................................................................... 35
3.5 802.11b RF Carrier Suppression................................................................................35
3.6 IEEE 802.11n/ac MIMO Measurements......................................................................36
3.6.1
Trigger Synchronization Using an R&S
®
FS-Z11 Trigger Unit....................................... 37
3.7 Signal Field Measurement (IEEE 802.11ac, n (SISO+MIMO)).................................. 39
3.8 Measurement Result Types........................................................................................43
3.8.1 IQ Impairments..............................................................................................................43
3.8.2 EVM Measurement....................................................................................................... 48
3.8.3 Rise/Fall Time Measurement........................................................................................ 50
3.9 Measurement Settings and Result Displays.............................................................50
3.9.1 Measurement Settings.................................................................................................. 51
3.9.2 Result Summary List.....................................................................................................54
3.9.3 Result Display Graph.................................................................................................... 59
3.9.4 Title Bar Information......................................................................................................61
3.9.5 Status Bar Information.................................................................................................. 61