1

SPC5 Channel Emulator2018

Beijing Starpoint Technology Company Limited

Channel Sounding & Emulation Product Line

2

Summary

1. HW Architecture of SPC5

2. Advantages of SPC5

3. Typical characteristics of SPC5

4. Typical scenarios

3

HW Architecture of SPC5

Base on AXIe: kernel module could be easily replaced, high density (HD) design reduced weight & size

Main Control & Routing Unit (CXU): bi-directional 160Gbps baseband data switching capability

BB Channel Emulation Unit (CEU): 4*4MIMO @160MHz supported within one CEU

High Density RF Unit (RFU): 4 Channels/8 ports @160MHz BW

Switching Extended Unit (EXU)：providing extra bi-direction 80Gbps BB data switching capability

Multiple SPC5s cascading,

Extending emulation capability.

4

Advantages of SPC5 (1)

Flexible customization configuration:

• Two types of I/O interface：RF connector made test application more easier to implement with SPC5. Using Baseband connector, BB test could be implemented directly which reduced test cost.

• Hybrid scheme of CEU and RFU：CEUs and RFUs could be combined into one box according to user needs.

• Independent RFU with calibration：convenient to replaced, repaired and upgrade.

RF system (RFS) BB processing system (CES) Hybrid scheme

Multiple RFSs and CESs cascading for more powerful CE system

5

Advantages of SPC5 (2)

Massive RF Channels:

• 8 Channels in One box, extended to 64 or more by multiple instruments cascading.

Powerful Channel Emulating Capability:

• 384 paths@160MHz supported with one SPC5.

• 8*4 or 4*4 bi-directional MIMO @160MHz by one SPC5.

Frequency of all RF channels

could be set independently:

• With this property, several groups of CE could be implemented simultaneously, especially convenient for multi-technology, multi-band complex wireless test application.

6

Credibility

• Years of experience in channel modeling and simulation (CIR Files without encryption can be exported from SPC5 for verifying purpose).

• Starpoint has many years of experience in wireless communication testing, especially in wideband RF Module developing.

• The verifying has been implemented by putting SPC5 into starpoint’s all kinds of conformance testing systems which have been widely used in the industry.

SP8200 SP6100 SP6200 SP8300 SP6300 NXT

Starpoint’s main equipment and testing systems

7

Typical RF Characteristics

Parameter value

Frequency range 100MHz~6GHz

Channel bandwidth 160MHz

Output level dynamic range -120～5dBm

Output level accuracy < ±0.5dB

Input level dynamic range -55~25dBm

Spurious In band: < -40dBc, out of band: < -50dBc

EVM < 1.5% (QPSK, 1.28MHz)

Noise floor < -157dBm/Hz

Input impedance 50Ω

Input VSWR < 1.5

Reference clock 10MHz, 0.05ppm

8

Channel Modeling Info

index description

Standard channel model 2G, 3G, 4G wireless channel model, including LTE, WCDMA, TD-

SCDMA, GSM etc.

Optional channel model WLAN TGn、TGac

Other channel model Satellite Customized model

Fading type Constant, Rayleigh, Rice, Flat, Pure Doppler, Gaussian, Customized

Delay type Fixed, Linear, Sinusoidal, 3GPP birth death

Shadowing Supports predefined shadowing files or user-defined shadowing files

Emulation channel topologies

Supports many connection topologies such as MIMO, SIMO, MISO, SISO, CA (Carrier Aggregation)

9

Scenarios: basic application

4×4 bi-directional 160MHz solution:

• Instrument building: 1 platform, 2 RFU, 2 CEU and 1 CXU.

• Benefit from the internal high speed back board, no external cables needed

4×4 Bi-directional MIMO solution

4×4 Bidirectional MIMO

RF channel 8

Board Configure

CXU 1

CEU 2

RFU 2

BS UE

10

Scenario: MIMO OTA Testing

• OTA testing has been evolved from SISO, MIMO OTA to 3D MIMO OTA, now facing the challenges of 5G Massive MIMO.

• The required number of probe in echo chamber is getting larger, SPC5 in Starpoint can fulfill this requirement.

DUT

OutputPorts

Base StationEmulator

(LTE eNodeB)

To Input 1

UplinkCommunication

Antenna

InputPort

Eight Dual-Polarized Element Boundary Array(45° Resolution)

AzimuthRotation of DUT

DownlinkPower

Amplifiers

SpatialChannel Emulator

To Input 2

Splitters

SpatialChannel Emulator

PA

PA

PA

PA

PA

PA

PA

PA

PA

PA

PA

PA

PA

PA

PA

PA

...

LNA

11

Scenario: custom-made testing

Typical Scenario ：

• High speed train scenario: SPC5 support high speed train channel model.

• Tunnel scenario: Leak cable make difference with high speed train in communication, which means special modeling and testing.

• Powerful local team can provide customized testing such as satellite channel modeling and for military use.

12

Scenario: ASO application

Typical Scenario ：

• Emulating flight channel characters of aircraft such as satellite, airplane and guided missile in a laboratory environment with SPC5 ASO option.

• Support ASO model creating and editing, 3D trajectory and doppler parameters visualizing, file validation and model playback.

(ASO option supports max 3000km distance and 30000m/s modeling)

Parameter Value

Max Doppler 2 MHz

Max num. of multipath

1(LOS)+3(reflectors)paths/channel

Max Delay 5000us

Max Distance 3000km

Max Acceleration 100G

13

THANKS

Q&A