Service manual

WLAN TX Measurements
R&S
®
FSV-K91/91n/91ac/91p
12Operating Manual 1176.7649.02 ─ 04
3.1 Introduction to WLAN 802.11A, AC, B, G, J, N & P TX
Tests
The use of an R&S FSV spectrum analyzer enables the accurate and reproducible TX
measurement of a wireless LAN device under test (DUT) in accordance with the stand-
ards specified for the device. The following test conditions are supported:
Modulation formats:
●
IEEE 802.11j (10 MHz)
– BPSK (3 & 4.5 Mbps)
– QPSK (6 & 9 Mbps)
– 16QAM (12 & 18 Mbps)
– 64QAM (24 & 27 Mbps)
●
IEEE 802.11a, j & g (OFDM), p
– BPSK (6 & 9 Mbps)
– QPSK (12 & 18 Mbps)
– 16QAM (24 & 36 Mbps)
– 64QAM (48 & 54 Mbps)
●
IEEE 802.11b & g (single carrier mode)
– DBPSK (1 Mbps)
– DQPSK (2 Mbps)
– CCK (5.5 & 11 Mbps)
– PBCC (5.5, 11 & 22 Mbps)
●
IEEE 802.11ac (SISO and MIMO)
– 16QAM
– 64QAM
– 256QAM
For IEEE 802.11n (MIMO) the modulation and data rates depend on the MCS
index
●
IEEE 802.11n (OFDM), (SISO and MIMO)
– BPSK (6.5, 7.2, 13.5 & 15 Mbps)
– QPSK (13, 14.4, 19.5, 21.7, 27, 30, 40,5 & 45 Mbps)
– 16QAM(26, 28.9, 39, 43.3, 54, 60, 81 & 90 Mbps)
– 64QAM(52, 57.8, 58.5, 65, 72.2, 108, 121.5, 135, 120, 135 & 150 Mbps)
For IEEE 802.11n (MIMO) the modulation and data rates depend on the MCS
index
SISO vs MIMO
For most WLAN measurements, a single transmitter and a single receiver are used
(SISO = single in, single out). For measurements according to the IEEE 802.11n or ac
standards, the R&S FSV can measure multiple data streams between multiple trans-
mitters and multiple receivers (MIMO = multiple in, multiple out).
For MIMO the modulation and data rates depend on the MCS index.
Introduction to WLAN 802.11A, AC, B, G, J, N & P TX Tests