4G + 5G Multi-band DAS
4G + 5G Multi-band DAS
There are many types of DAS system for in-building service that has been developed in various forms according to the demands of the market, multi-band has become popular as the network evolves from 4G to 5G NR.
This is a DAS system that supports 6 bands of 4G and 5G NR TDD simultaneously and has a structure that allows a total of 128 SUs to be distributed in a building. RF signals received from 5G NG gNB are converted into optic signals through MU and finally transmitted to SU via EU.
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Catalog
BTS-Fed Active / Hybrid 5G DAS
High Capacity Performing Network
SDM 1735-SB
Multi-frequency band configuration
- 900MHz/1.7GHz / 2.1GHz @ FDD
- 3.4GHz,3.5GHz / 3.9GHz @ TDD
Built-in POI
- High-power attenuating device inside the Master Unit
- Backup DC power source using high power energy harvesting
- Reduce heating issue of the site
UNC (Uplink Noise Cancellation)
- Minimize base station noise by eliminating noise generated by multiple SUs
- Optimized filtering algorithm for noise cancellation
System configuration
- MU: EU: SU = 1: 8: 128
Low latency design
- Reduced system delay for more TDD coverage
- Optimized design of the delay of channel filter & pre-distortion algorithm
Demodulation
- TDD sync directly from downlink RF input
SDM 1735-SB
SDM 1735-SB
| Item | Link | Specification |
|---|---|---|
| Frequency Range | UL/DL | 700MHz, 900MHz, 1.7GHz, 2.1GHz, 3.5GHz, 3.9GHz |
| Survice Unit TYPE | – | 1.7GHz+2.1GHz+3.5GHz @SU TYPE1
700MHz or 900 MHz+3.9GHz @SU TYPE2 |
| Max Output Power | DL
UL |
+23dBm/port @700MHz, 900MHz, 1.7GHz, 2.1GHz
+24dBm/port @3.5GHz, 3.9GHz 0 dBm/port |
| System Gain | DL | 23dB @700MHz, 900 MHz, 1.7GHz, 2.1GHz, 24dB @3.5GHz, 3.9GHz |
| UL | 27dB max | |
| Delay | UL/DL | ≤ 6usec |
| SEM | DL | 3GPP TS 38.104 compliant |
| Spurious Emission | DL | 3GPP TS 38.104 compliant |
| EVM | DL | ≤3% @256QAM |
| ACLR | DL | ≥40dB |
| VSWR | UL | ≤1.5: 1 |
| Noise Figure | UL | ≤6dB |
| System Configuration | – | MU:EU:SU=1:8:128 |
| SFP | – | 25Gbps |
SDM 1735-SB
| Master Unit (MU) | Specification |
|---|---|
| Dimension | W*D*H=482.6*250*266nm |
| Weight | ≤20kg |
| Cooling | Forced convection |
| Operating Temperature | -10 ~ +55℃ |
| Relative humidity | 0% ~ 90% |
| Mount type | Rackor Wall mount |
| RF connector | Mini-DIN 4.3-10 (female) |
| Typeof Power Supply | DC-DC convertor (DC -48V in) |
| Local monitoring | RJ-45 |
| Power consumption | ≤ 90W |
| Extension Unit (EU) | Specification |
|---|---|
| Dimension | W*D*H=482.6*410*130mm |
| Weight | ≤16kg |
| Cooling | Forced convection |
| Operating Temperature | -10 ~ +60℃ |
| Relative humidity | 0% ~ 90% |
| Mount type | Rackor Wall mount |
| RF connector | None |
| Typeof Power Supply | AC-DC powersupply
(AC100~200V free volt in) |
| DC power transmission to SU | DC -48V |
| Local Monitoring | RJ-45 |
| Power consumption | ≤ 75W |
| Service Unit (SU) | Specification |
|---|---|
| Dimension | W*D*H=355*257*73mm |
| Weight | ≤5kg |
| Cooling | Convection |
| Operating Temperature | -10 ~ +60℃ |
| Relative humidity | 0% ~ 95% |
| Mount type | Wall mount/Ceilingmount/Suspension bolt |
| RF connector | Mini-DIN 4.3-10 (female) |
| Typeof Power Supply | DC-DC convertor (DC -48V in) |
| Local Monitoring | RJ-45 |
| Power consumption | ≤ 83W |
