Overview
MIMO (Multiple Input Multiple Output) has become the key technology of next generation of communication due to the capacity advantage. The space characteristics can be fully utilized in MIMO to increase the system capacity while the transmission power and bandwidth are maintained.
The complex 8 × n and 801.11ac technology may result in a number of problems in the laboratory. As they are sensitive to the phase, engineers must accept large errors of accuracy or spend hours in manual calibration and re-calibration of RF simulation environment. The MIMO channel simulation test system of TRANSCOM can help to realize the automation of calibration and provide the required precision and efficiency. The system or terminal performance test can be done indoors by presenting the fading characteristics of spatial transmission of wireless signals in the instrument.
Main advantages:
• Simplify the test
The complicated procedures which may easily result in errors in the accurate test of complex RF signals can be
simplified and optimized.
• Create a real world in the laboratory
TRANSCOM can bring the real RF scene into the laboratory, including the captured driving test scene and complex
MIMO scene.
• Maximize the efficiency of resources
Even the most inexperienced member can rapidly and correctly establish and call the most complex test case.
Main characteristics:
• The control process can be simplified even in the complex MIMO environment, due to the touch screen type graphical user interface.
• Automatic phase calibration of higher time efficiency can
be realized in the 8 × n/TD-LTE/802.11ac test.
• Support key channel simulation characteristics of TRANSCOM.
• Dynamic environment emulation (DEE).
• Extensible bandwidth (up to 70MHz).
• Enhanced power output and dynamic range.
Key Features |
• Provide four MIMO wireless channel simulator prototypes.
a) Support the signal bandwidth of 70MHz and simulation of 4x4 MIMO channels.
b) The modular architecture can be extended to simulation of 4x4 channels.
c) Flexible simulation interfaces, including RF and DBB (digital baseband).
d) Complex multi-path (48 paths) fading in each channel.
e) RF channel system covering the frequency range of 400MHz to 6GHz.
f ) The low-distortion channel supports high-order modulation (such as 64QAM).
g) Implementation technology for high-speed baseband signal processing.
h) Self-correction of MIMO channel simulation system.
i) Support multi-functional interfaces, including RF, analog baseband and digital baseband.
j) Flexible application architecture, supporting two-way synchronous test.
• MIMO channel simulation algorithm and implementation technology
a) Simulation of large and small channel parameter.
b) Support the typical/customized channel fading model.
c) Support the MIMO-based channel model.
d) Support the high-speed mobile environment.
e) Support AWGN digital noise adding to provide the accurate C/N or SNR.
f) Support the carrier aggregation and CoMP test.
g) Support rapid dynamic control of channel parameters and realize dynamic environment emulation (DEE). The controlled parameters include the status duration, channel output level, relative path power, etc.
• Provide the open development interface for the user to program the test function according to the equipment
and test requirements. Parameter configuration and channel characteristic simulation are integrated in the test
environment.
• Support the data acquisition, playback and offline analysis of channel simulation. Apply the complete information analysis function, and realize information output to the terminal. |
Specification |
-
RF Transmitter |
Frequency Range |
400MHz to 6000 MHz |
Frequency Resolution |
10Hz |
Output Port |
RF OUT N type (female) |
Output Impedance |
50 Ω |
CW Output Power Range |
RF OUT port:–80 to -10 dBm |
CW Output Power Accuracy |
< ±1 dB |
CW Power Setting Step |
1 dB |
Output Gain Flatness |
1 dB@70MHz |
Channel Bandwidth(1dB) |
70MHz |
Out-of-band Stray |
< –30 dBc |
RF Receiver |
Frequency Range |
400MHz to 6000 MHz |
Frequency Resolution |
10Hz |
Output Port |
RF OUT N type (female) |
Output Impedance |
50 Ω |
CW Output Power Range |
–40 to 10 dBm |
CW Output Power Accuracy |
< ±1 dB |
CW Power Setting Step |
1 dB |
Output Gain Flatness |
1 dB@70MHz |
Channel Bandwidth(1dB) |
70MHz |
Out-of-band Stray |
< –30 dBc |
RF to RF Interface Specification |
Chnanels |
1-4 |
(per)Channel Order |
48 |
Minimum Delay |
2μs |
Amplitude Flatness |
±1dB(70MHz bandwidth) |
Channel Group Delay |
±0.25μs (50MHz bandwidth); |
±0.5μs (100MHz bandwidth) |
< ±1 dB |
Parasitism Caused By Aliasing |
-60 dBc |
RF Local Oscillator |
Frequency Range |
400MHz to 6000 MHz |
Frequency Resolution |
10Hz |
SSB Phase Noise |
1000MHz |
-75dBc/Hz @1kHz offset carrier
-95dBc/Hz @20kHz |
2500MHz |
-70dBc/Hz @1kHz offset carrier
-100dBc/Hz @100kHz |
5000MHz |
-60dBc/Hz @1kHz offset carrier
-95dBc/Hz @100kHz |
Sideband Parasitism |
<-60dBc (±100kHz carrier) |
VSWR |
<2:1 |
Channel Interface Specification |
Numbers of Interfrence Signal (each channel) |
1-5 |
Frequency Range |
400MHz ~ 6000MHz |
Frequency Offset Range |
-50 ~ +50 MHz |
Frequency Resolution |
10kHz |
Frequency Accuracy¹ |
±1kHz |
Frequency Accuracy² |
±0.1kHz |
C/R Ratio |
0.1dB |
Interfrence Level Range |
-35 ~ -10dBm |
Interfrence Level Resolution |
0.1dB |
Interfrence Level Accuracy |
±1dB |
Noise Power【1HZ bandwidth】 |
|
>+/-500kHz |
<-130dBm/Hz |
>+/-700kHz |
<-132dBm/Hz |
>+/-1500kHz |
<-135dBm/Hz |
Harmonic/Stray Signal |
|
>+/-500kHz |
<-80dBc |
>+/-700kHz |
<-85dBc |
>+/-1500kHz |
<-95dBc |
Remote Control Port |
LAN |
USB-A |
5 USB2.0 |
Trigger Signal Output Port |
BNC female(TTL) |
Trigger Signal Input Port |
BNC(TTL) |
Bidirectional Programmable Port |
DB9(5 TTL) |
System SYNC Port |
20 pairs LVDS |
Display Port |
VGA/DVI-D |
Time Base Specification |
Reference Clock Frequency |
100MHz |
Aging Ratio |
< ±0.1 ppm/year |
Temperature Stability(reference +25 °) |
< ±0.01 ppm
-75dBc/Hz @1kHz
-95dBc/Hz @20kHz |
Output Frequency Accuracy (after warm-up 30 min) |
aging shift + stability |
External Reference Frequency Range |
100MHz ± 5 ppm |
Input Port |
REF Input(BNC female) |
Input Level |
0 to +10 dBm(Sine/TTL) |
Input Impedance |
50Ω |
Output Port |
REF Out (BNC female) |
Output Level |
0 to +10 dBm |
Output Impedance |
50 Ω |
General |
Operationg Temperature |
+10 ~ +40 °C |
Storage Temperature |
–20 ~ +65 °C |
Humidity |
20% ~ 80% |
Dimensions(HxWxL) |
222 x 426 x 533 mm |
AC Power |
100 ~ 240 VAC, 50 ~ 60 Hz |
LCD |
10.4 inch XGA (1024 x 768) |
Touch Screen |
4096x4096 resistive |
Operating System |
Windows XP |
Consumption |
< 450 W |
Weight |
< 25 Kg |
Calibrating Period |
1 year |
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