sDAS Indoor Coverage

Signal Coverage Anytime, Anywhere

Wave-In’s revolutionary Slim Distributed Antenna System (sDAS) provide our clients with improved signal performance.

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In-Building Coverage in the 5G Era

Under 3GPP 5G NR standards, 5G use high frequencies (3.4-3.7GHz; 24-28 GHz), presenting challenges for in-building coverage due to its low indoor signal penetration rate.

Our in-house developed Slim Distributed Antenna System are designed to solve 5G’s low indoor signal penetration rate and help extend signal coverage into indoor environment, such as elevators, parking lots, basements and more.

“Optimal” 5G will employ a mix of low, medium, and high frequency bands, but those high frequency bands (e.g., C-band & millimeter wave) will be difficult for DAS – passive DAS in particular (which uses components without active electronics).

In 5G network, fast deployment and visual O&M are regarded as basic requirements. Visualised O&M allows for real-time monitoring for the status of the massive number of head ends and other network elements, giving the ability to layer services on top of 5G networks.

MIMO support, migrating to 5G will require higher antenna arrays – e.g., 4T4R – which could be difficult or prohibitively expensive for DAS before. And without higher orders of MIMO, beamforming – a fixture of 5G discussions – isn’t possible.

Including: ultra low weight, the most compact size with the smallest footprint in the industry, simple installation, Web GUI and SNMP remote monitoring as well as multi-bands with multi-carriers.

Key Features


Flexible to select four desired combination of operators and frequency bands. S-DAS II supports 3G/4G/5G.


Supports various types of input signals from base transceiver station (BTS), macro and small cell, and repeater.


Single fiber MIMO support on both FDD and TDD model and reduced cost for maximal performance.


Hybrid topologies offers the most flexibility for installation under all circumstances.


Rapid deployment with confidence in the field with the use of our auto calibration tool.


Optical fiber is the best transport media for 5G networks.


Wave-In’s SDAS system includes the HEU and RAU.

Head End Unit (HEU)

HEU is connected with BTS RF head and transport signal to RAUs via single fiber. The HEU can take RF signal from any source like Macro/Pico/Small Cell/Repeater and distribute the signal to RAUs in different locations via the single mode fiber.

Remote Antenna Unit (RAU)

RAU is the remote antenna unit that extends the RF signal through fiber. RAU installation can be hidden, mounted on walls or ceilings with build-in or external antenna options. Each HEU can convert and distribute the RF signal to max. eight RAUs to 3 miles distance.


Wave-In’s sDAS is suitable in various environments, particularly in sites where installations are difficult. Examples include high-rise buildings, department stores, factories, hospital operation rooms, elevators, basements and parking lots.