Changes between Version 14 and Version 15 of Tutorials/Wireless/MassiveMIMO

Timestamp:

Jul 8, 2022, 7:01:46 AM (3 years ago)

Author:

zhenzhou77

Comment:

—

Tutorials/Wireless/MassiveMIMO

@@ -61 +61 @@
 
 === Experiment Execution ===
+==== Find and prepare USRPs and the Sounder software ====
+
+* The IP addresses for Ethernet Port 1(10G) on {{{sdr2-s1-lg1}}} and {{{sdr2-md1}}} were hard-coded to {{{10.118.2.2}}} and {{{10.118.3.2}}} respectively. To access them from {{{srv2-lg1}}}, configure the network interface {{{eno2}}} as follows:
+{{{#!shell
+root@srv2-lg1:~# ifconfig eno2 10.118.1.2 netmask 255.255.0.0 mtu 9000 up
+root@srv2-lg1:~# sudo sysctl -w net.core.wmem_max=24862979
+net.core.wmem_max = 24862979
+root@srv2-lg1:~# sudo sysctl -w net.core.rmem_max=24862979
+net.core.rmem_max = 24862979
+root@srv2-lg1:~# ifconfig 
+eno2: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 9000
+        inet 10.118.1.2  netmask 255.255.0.0  broadcast 10.118.255.255
+        inet6 fe80::9a03:9bff:fe61:9609  prefixlen 64  scopeid 0x20<link>
+        ether 98:03:9b:61:96:09  txqueuelen 1000  (Ethernet)
+        RX packets 4053772  bytes 17770502341 (17.7 GB)
+        RX errors 0  dropped 0  overruns 0  frame 0
+        TX packets 1727950  bytes 2972166223 (2.9 GB)
+        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
+
+}}}
+
+* Run {{{uhd_find_device}}} to make sure that the USRP-2974s can be reached:
+{{{#!shell
+root@srv2-lg1:~# uhd_find_devices --args="addr=10.118.2.2"
+[INFO] [UHD] linux; GNU C++ version 7.5.0; Boost_106501; UHD_3.15.0.HEAD-0-gaea0e2de
+--------------------------------------------------
+-- UHD Device 0
+--------------------------------------------------
+Device Address:
+    serial: 318F20F
+    addr: 10.118.2.2
+    fpga: XG
+    name: 
+    product: NI-2974
+    type: x300
+
+root@srv2-lg1:~# uhd_find_devices --args="addr=10.118.3.2"
+[INFO] [UHD] linux; GNU C++ version 7.5.0; Boost_106501; UHD_3.15.0.HEAD-0-gaea0e2de
+--------------------------------------------------
+-- UHD Device 0
+--------------------------------------------------
+Device Address:
+    serial: 3165747
+    addr: 10.118.3.2
+    fpga: XG
+    name: 
+    product: X310
+    type: x300
+}}}
+
+* Download and build the RENEW Sounder software **on the {{{develop}}} branch** at [https://github.com/renew-wireless/RENEWLab/ here] and follow the [https://docs.renew-wireless.org/dev-suite/design-flows/cpp/sounder/ instructions] to build it. Note that the {{{master}}} branch does not have UHD support.
+
+* Include in {{{files/usrp-bs-serials.txt}}} the IP address {{{10.118.2.2}}}, i.e., use {{{sdr2-s1-lg1}}} as the base station (BS). In {{{files/usrp-bs-only.json}}}, set {{{"channel" : "AB",}}} to enable dual-channel on {{{sdr2-s1-lg1}}}.
+
+* Similarly, in {{{files/usrp-client-only.json}}}, set {{{"sdr_id" : [ "10.118.3.2" ]}}} (i.e., use {{{sdr2-md1}}} as the user) and {{{"channel" : "AB",}}} to enable dual-channel on {{{sdr2-md1}}}.
+