Hello all,
I'm using two WiFi module Compex WLE600V5-27
http://www.compex.com.sg/product/wle600v5-27/
capable of 2x2 MIMO on two boards (Gateworks ventana 5410) using ath10k drivers.
The chipset is the Qualcomm-Atheros QCA9882 but I didn't find a
firmware for this chipset, so I'm using the QCA988X.
Everithing worked fine until I tried to plug 2 antennas in both cards
in order to make some data-rate tests. Even if there are two antennas
plugged in, there aren't any changes in the data-rate measured between
using one or two antennas. Sniffing the channel I sow that the Number
of STBC streams is 1 and iw list shows that only 1 spatial stream is
supported (but the card is capable of managing 2 spatial streams):
Wiphy phy0
Band 1:
Capabilities: 0x19e3
RX LDPC
HT20/HT40
Static SM Power Save
RX HT20 SGI
RX HT40 SGI
TX STBC
RX STBC 1-stream
Max AMSDU length: 7935 bytes
DSSS/CCK HT40
Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
Minimum RX AMPDU time spacing: 8 usec (0x06)
HT TX/RX MCS rate indexes supported: 0-15
Frequencies:
* 5180 MHz [36] (17.0 dBm)
* 5200 MHz [40] (17.0 dBm)
...
Available Antennas: TX 0x3 RX 0x3
Configured Antennas: TX 0x3 RX 0x3
Supported interface modes:
* managed
* AP
* AP/VLAN
* monitor
* mesh point
I tried the tests both on channel 48 HT40- and 149 HT40+.
The RSSI measured with iw station dump lays around -40dBm
Is it an issue related to the firmware in use?
Or maybe there aren't the right conditions to have MIMO working?
Thanks in advence
All the best
Matteo
