Non-Line-of-Sight Solutions

Are trees or buildings obstructing your wireless connection/design/customer application? Try a non line of sight option!

Problem

Many times a free and clear line-of-sight (LOS) path is not available, trees in rural areas or buildings in urban environments.  The severity of the obstructions vary.

Near-Line-of-Sight Obstruction (partial blockage)

Non-Line-of-Sight Obstruction (complete blockage)

 

Possible Solutions

Traditional solutions involve either elevating the radio or antenna above the obstruction or creating multiple paths to take the signal around the problem.  Both are expensive options and they're often unavailable.

TESSCO Solution

TESSCO offers multiple solutions depending on the severity of the obstruction.

OFDM Technology

Radios using OFDM can provide a solution for a varying degree of obstructed paths. OFDM technology breaks a wideband signal transmission into independent datastreams called subcarriers and uses sophisticated error correction on the receive side to allow reliable throughput around obstructions. TESSCO provides a selection of products at different price points to overcome almost any obstructed path.

Complete blockage:  Motorola Point to Point
Partial blockage: Solectek

View powerful white papers from Eric Lee, President of Solectek, on the Technology and Implementation of NLOS (PDF) and on the Test Results for the Solectek SkyWay 5000 Series network  (PDF).

900 MHz Frequency Radios

Unlicensed 900 band allows penetration through minimum obstructions such as foliage.

Partial blockage: Motorola Canopy

Mesh Backbone

When coverage is needed over a large area with numerous line-of-sight issues, a mesh network can provide a reliable solution that's easy to deploy. A mesh network will automatically transmit data over the shortest path or the one with the least resistance.  Individual nodes may connect with several neighboring nodes to form diverse routing paths through the network.  Unlike point-to-multipoint networks, meshes don’t route traffic from terminal nodes to a central hub.  The diverse routing, self-configuring and self-reconfiguration features allow path changes that will redirect traffic based on the shortest, fastest, least congested or other characteristics of each path.

2.4 and 5.8Ghz freguency systems are available.

Partial blockage: Firetide

 

For free path calculation and recommendations please contact TESSCO today!

 

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