mmWave measurement program
The ﬁfth-generation cellular networks (5G)has been proposed as a solution for the accelerating growth in data trafﬁc. As part of 5G, millimetre-wave (mmWave) is suggested as one of the potential spectrum candidates due to the vastly available bandwidth. Accordingly, both indoor and outdoor propagation measurements on mmWave have been widely conducted over the recent years. These ﬁeld measurements were heavily dependent on utilizing expensive channel-sounders and tools. In this paper, we propose an affordable and open-source test-bed solution for mmWave channel modeling covering 24 GHz and 77 GHz bands. The key contribution in the proposed test-bed is the use of costeffective mmWave Doppler radars, a speciﬁc methodology is developed for this purpose. The proposed test-bed is capable of resolving the received power at any given combination of angles-of-arrival (AoA) and angles-of-departure (AoD). In order to verify the functionality of the proposed test-bed, several measurement scenarios have been investigated in different indoor environments, the obtained propagation results using this testbed indicate a good consistency with the expected mmWave propagation characteristics. As the proposed test-bed is an open source and cost-effective, researchers and RF designers can easily conduct mmWave propagation measurements according to their particular needs.
Comply different programs with respect to the corresponding unit i.e. (Base unit, Base station, 24GHz)
For 77GHz radar measurement, RS232<->TTL modules are required for communication between Base Unit and 77GHz radar.
Or connect to the PC using RS232 and run the SiversIMA_Controller.m directly from the PC.
Run the BaseStation program and log into the Base Station CLI using arduino IDE or Putty
Using the following command to control the base unit, 77GHz, 24GHz radars.
// Command Code Respond
// Force initialization NNM01# ”OK”
// Reset angle NNM02# ”OK”
// Get status NNM03# <text>
// Get coordinates NNM04# S dd.dd / E ddd.dd
// Get current angle NNM05# +/- ssss
// relay NNM06<text># "Sent"
// Go to angle NNM10(+/-)ssss# ”Go to +/- ssss”
// Set 24GHz VCO voltage NNM23VV# "Set VCO to VV"
// Perform Sweeping from NNM22VVVV#Measurement data
VV to VV
// Troubleshooting NNM21#Measurement data
The 77GHz radar command please refer to Sivers IMA RS3400 manual.