Passive and active DAS design for 4G LTE, 5G NR and multi-operator indoor cellular coverage across hospitals, airports, stadiums, tunnels, offices and shopping malls.
Any large or signal-challenged structure benefits from a professionally engineered DAS solution.
Life-safety & patient connectivity across dense RCC structures.
Multi-operator coverage across terminals, concourses & aprons.
High-capacity coverage for 50,000+ simultaneous users.
Continuous in-tunnel cellular & public safety radio coverage.
Seamless floor-by-floor coverage in high-rise buildings.
Carrier-neutral multi-operator support for retail environments.
University, corporate & industrial campus-wide cellular overlay.
Guest coverage with ERRCS public safety overlay.
Choosing the right architecture is the most critical design decision — it affects cost, scalability, frequency agility and long-term maintainability.
| Parameter | Passive DAS | Active DAS | Hybrid DAS |
|---|---|---|---|
| Signal Distribution | Coaxial cable + passive splitters/couplers | Fiber optic + Remote Units (RUs) | Fiber to hubs, coax to antennas |
| Typical Coverage Area | < 50,000 sq ft | > 100,000 sq ft (unlimited floors) | 50,000 – 500,000 sq ft |
| Frequency Agility | Limited by passive component bandwidth | High — software-configurable | Moderate |
| Upfront Cost | Low | High | Medium |
| Scalability | Limited | Excellent | Good |
| 5G NR Support | Sub-6 GHz (wideband components) | Full — Sub-6 & mmWave capable | Sub-6 GHz |
| Best For | Small buildings, single carrier | Large venues, multi-carrier, 5G | Mid-size multi-floor buildings |
A rigorous, standards-driven process from site survey to operator coordination package — delivered in AutoCAD and Revit.
Walk-through survey, building material assessment, incumbent signal measurement and 3D RF propagation modelling.
Frequency band selection, path-loss calculations, noise figure analysis and uplink/downlink power budget verification per band.
Passive / Active / Hybrid recommendation based on coverage area, carrier count, 5G roadmap and CAPEX/OPEX targets.
AutoCAD/Revit floor plans with antenna coordinates, cable routes, splitter/coupler selection, BoQ and PIM-risk review.
BDA/MU rack design, power sizing, ERRCS overlay, grounding & bonding plan, NMS/remote monitoring architecture.
Complete operator coordination package: acceptance test plan, commissioning checklist and drive/walk-test report template.
Industry-standard performance benchmarks that guide every ASDV DAS design — verified against 3GPP, TRAI and operator acceptance criteria.
ASDV designs are component-agnostic. We specify from leading vendors and ensure carrier-accepted equipment selection.
Omni-directional ceiling, panel and directional wall-mount types.
Trunk and distribution cabling sized for loss budget compliance.
Passive power division network — heart of passive DAS design.
Head-end signal amplification for passive and hybrid systems.
Fiber-connected remote radio units for active DAS architectures.
Remote monitoring, alarm management and performance analytics.
Estimate your DAS link budget instantly. Enter your system parameters to check downlink coverage feasibility.
Every ASDV DAS design is engineered to comply with applicable Indian and international standards.
RF performance, frequency band, RSRP/SINR targets and emission limits for LTE & 5G NR indoor systems.
Mandatory ERRCS/public safety radio coverage requirements for buildings above 15m height and special occupancies.
In-building coverage standards for first-responder radio systems — applied to projects with international scope.
In-building solution regulations, repeater guidelines, frequency allocation and operator interface requirements.
Structured cabling topology, cable classification and installation practices for wireless distribution systems.
Performance specifications for coaxial cables, N-type and DIN 7-16 connectors used throughout the DAS plant.
Representative projects illustrating ASDV's design approach across diverse environments.
Dense RCC structure blocking all four operators; ICU & OT zones requiring 99.9% coverage for patient monitoring and staff communication.
Passive DAS on 1800/2100/2300 MHz with ERRCS public safety overlay; 120 ceiling antennas across 8 floors.
−85 dBm minimum RSRP across 99% of floor area; NBC-compliant ERRCS sign-off achieved.
Simultaneous 30,000 user demand during events; macro signal blocked by steel roof; multi-operator requirements on single neutral-host system.
Active DAS with fibre-fed remote units; 280 sector antennas targeting bowl, concourse & VIP areas; Jio, Airtel & Vi on single platform.
Peak throughput 2.4 Gbps aggregate; avg per-user DL 12 Mbps during full capacity event.
Zero ambient RF underground; continuous coverage required for passenger connectivity and mandatory CBTC train control radio communication.
Leaky feeder DAS on 700/1800 MHz for cellular plus 400 MHz trunked radio for CBTC; wayside antenna nodes every 100m.
−88 dBm minimum tunnel coverage; zero dead-zones; CBTC handoff latency <20 ms throughout.
Every ASDV DAS project includes a complete, construction-ready documentation package.
AutoCAD/Revit floor plans with exact antenna coordinates, cable routes, tray layouts and zone annotations.
Per-frequency, per-zone link budget with RSSI/SINR analysis, coverage prediction maps and margin calculations.
Single-line head-end to antenna schematic showing all active/passive components and signal levels.
Itemised hardware BoQ with quantities, specifications and approved vendor alternatives for procurement.
Equipment specs, installation notes, testing requirements and quality standards for contractor guidance.
Carrier submission drawings, acceptance test plan, commissioning checklist and TRAI/NBC compliance statement.
Passive DAS uses coaxial cables, splitters and directional couplers to distribute signal from a central BDA/repeater — no power required at distribution points, cost-effective for buildings up to ~50,000 sq ft. Active DAS converts RF to optical at the head-end and uses powered Remote Units (RUs) at each antenna cluster, ideal for large multi-floor buildings, stadiums and any deployment requiring 5G NR or multi-operator support on a single fibre plant.
ERRCS (Emergency Responder Radio Communication System) — also called a Public Safety DAS — provides dedicated radio coverage for fire brigade, police and emergency services inside a building. NBC India 2016 mandates ERRCS for buildings exceeding 15 metres height, hospitals, airports, metro stations and public assembly spaces. ASDV designs ERRCS as a standalone overlay or integrated with the commercial DAS.
Yes — this is called a Neutral Host DAS. A single antenna infrastructure can simultaneously serve Jio, Airtel, Vi and BSNL across 4G LTE and 5G NR bands. Each operator connects their signal source to the common head-end via a combiner, and the shared plant distributes all signals. ASDV designs include inter-operator isolation analysis and PIM checks to ensure all carriers meet their individual RF acceptance criteria.
All ASDV DAS designs are 5G-aware. For passive DAS, we specify wideband antennas and cables rated for sub-6 GHz (up to 3.5 GHz / n78 band). For active DAS, we design fibre infrastructure that supports 5G NR software upgrades on active RUs. We factor in 5G NR-specific requirements such as wider channel bandwidths, tighter RSRP thresholds (−105 dBm) and UL/DL configuration in all link budgets.
A typical DAS design takes 2–6 weeks depending on building size and complexity. A small office building (under 50,000 sq ft, single operator) can be completed in 2 weeks. A large multi-operator hospital or stadium with ERRCS and 5G scope typically takes 4–6 weeks. Preliminary drawings are issued within 1 week; final coordinated package at project close.
Yes. ASDV prepares a complete operator coordination package including carrier-format drawings, link budget reports and acceptance test plans formatted to Jio / Airtel / Vi / BSNL submission requirements. We support you through the technical review process and address carrier RF engineer queries, significantly reducing approval time.
Tell us your building type, area and coverage goals — we'll scope the right DAS solution and send you a free preliminary consultation.