**5. KTH four-multi test-bed setup**

and movable multi-antenna nodes. A software framework accompanies the hardware setup of the testbed which facilitates the rapid testing of multi-antenna schemes (see http://fourmulti.sourceforge.net/). *KTH four-multi* is a USRP-based wireless communication test-bed consisting of several stationary and movable multi-antenna nodes. A software framework accompanies the hardware setup of the test-bed which facilitates the rapid testing of multi-antenna schemes (see http://fourmulti.sourceforge.net/). In the following, the hardware and software structure of the test-bed is described.

Fig. 3: Network structure of four-multi test-bed.

V. KTH FOUR-MULTI TEST-BED SETUP

*KTH four-multi* is a USRP-based wireless communication test-bed consisting of several stationary
