4G + 5G Multi-band DAS

4G + 5G Multi-band DAS

SDM 1735-SB

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
MU
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
EU
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
SU

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