Understanding FDD vs. TDD Microwave Systems

Understanding FDD vs. TDD Microwave Systems

Don’t Get Burned with Half-Duplex Capacity Claims

It is finally time to uncover the mystery between FDD and TDD, specifically the importance of FDD as a key element in network performance.

FDD stands for Frequency Division Duplex, and TDD stands for Time Division Duplex. Both FDD and TDD are two spectrum usage techniques, both forms of duplex, used in mobile or fixed wireless broadband links. It is essential to these links that transmission can occur in both directions simultaneously so that data can flow downlink (DL) and uplink (UL) at the same time without any noticeable interruptions.

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Microwave Radios Extend Wide Area Network for Healthcare Provider

Aged-care-provider-Life-Care-decided-not-to-wait-7-years-for-Australias-NBN-National-Broadband-Network-to-reach-the-Adelaide-suburbs-it-commissioned-an-Aviat-microwave-radio-WAN-instead-Nov-1-2013

Aged care provider Life Care decided not to wait seven years for Australia’s National Broadband Network to reach the Adelaide suburbs. Instead, it commissioned an Aviat microwave radio high-capacity WAN. Photo credit: Douglas Barber [CC-BY-SA-3.0-2.5-2.0-1.0], via Wikimedia Commons

Microwave radio is many things: It is an enabling technology in support of the mobile phone revolution and all its dependent social networks. It is a dedicated system that provides the skeleton and musculature (i.e. infrastructure) that allows police, firefighters and other first responders to react in a coordinated fashion to both routine and emergency public safety incidents. But it also serves in lower profile but nonetheless very important niche applications around the world. Take for example the experience of a regional healthcare provider in South Australia.

In a recent article in the national newspaper The Australian, the networking story of Life Care, the umbrella organization for a series of five aged care facilities and 12 retirement “villages” in and around Adelaide, Australia, was detailed. With the rollout of the National Broadband Network slowly progressing across Australia and not anticipated to reach the Adelaide suburbs for seven years, Life Care decided it could not wait so long to connect its locations via high-capacity telecoms. It chose to bid out a project for its own private Wide Area Network (WAN). Aviat Networks partner MIMP Connecting Solutions won the contract as the incumbent vendor. The clincher on the deal: the capability of Aviat radios to connect the farthest outlying facility, at some 50 kilometers, in Aldinga with high-bandwidth wireless. Furthermore, MIMP could offer a licensed spectrum solution, free from interference, whereas the competitors could not. And with a breakeven ROI of just two years, an Aviat-powered microwave WAN was a no-brainer—the others were four-years-plus to payback.

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