Some Stops along the DAS Evolutionary Path

John K. Bramfeld 0 entries0 comments Over the past couple years, discussing 5G in increasingly detailed terms has become a virtual sport in wireless.  But behind all the news and discussion are the real standardization initiatives and research driving the technology...

CPRI – Common Public Radio Interface

  Common Public Radio Interface, or CPRI in short, is a standard initially developed by Nokia Siemens. Soon it was joined by Ericcson, Huawei, NEC and Alcatel-Lucent, together comprising the five largest telecommunication equipment manufacturers in the world....

What’s DAS?

  DAS is an acronym which stands for Distributed Antenna System. The term DAS has been around since the mid-1980s and is typical jargon used among wireless professionals over the last few years. DAS is a system used to distribute wireless signals throughout a...

Active vs Passive DAS

  The majority of DAS installations today involve active equipment. Active DAS simply means the components require a power source to operate. an active system utilizes fiber optic cables to connect with remote nodes. Passive DAS systems don’t need fiber optic...

iDAS vs oDAS

  DAS is common terminology wireless industry professionals use to describe the infrastructure designed to distribute a cellular signal within a certain area, either indoor or outdoor. In most cases, the term references indoor DAS, however there are instances...

DAS Market- Distributed Antenna System

  A question we commonly hear is “What does the future hold for the DAS market?” Obviously, the wireless industry in general is growing and will continue to do so. The most visible segment of that expansion is the consumer sector, including...

Analog or Digital DAS

  Typical iDAS installations today are considered analog. This is because the BTS converts the digital feed into analog RF form (see Figure 3.) The analog RF signals are attenuated and fed into a multi-carrier DAS Head-End for distribution. Most DAS Head-End...

WiFi DAS

  Wireless carriers are always looking for ways to offload their data traffic because it relieves their capacity problem. However, WiFi has been treated by wireless carriers as something to always be cautious of. This is for several reasons. First, carriers don’t...

Over the Air DAS

  The simplest form of DAS can be built using over-the-air directional antennas . This is suitable for small buildings with a limited number of users. Such a setup tends to cover a particular frequency or carrier. Typical installation involves a directional...