The wireless blog

About wireless communication, antennas, and related technology

Radars for autonomous vehicles

An autonomous vehicle is one that is self-driving in the sense that it can steer, accelerate and brake by itself. The technologies required for autonomous driving have matured significantly in the past couple of years and are on their way to be implemented on a large scale. However, to enable fully autonomous vehicles at a reasonable cost, the radar resolution must be improved significantly.

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What is a radio link?

A radio link is a wireless connection between two nodes, or radio units, in a data network. Each radio unit consits of a tranceiver and a highly directive antenna, typically operating at microwave frequencies in the range of 6 – 23 GHz. However, the capacity of the radio links increases with frequency, and antennas for e.g. 70 - 80 GHz are being deployed to an increasing extent. Depending on frequency, the maxium communication range for a radio link varies between a few meters to hundreds of kilometers.

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Wireless radio link vs optical fiber cable

Data transfer in the mobile backhaul networks can be done in two ways – wireless using Point-to-Point radio communication or wired through optical fiber cables and copper wires. Today, approximately 50% of all cellular base stations are connected using wireless links. This blog post makes a comparison between wireless and wired.
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The growth of mobile data drives the need for higher data throughput and densified mobile networks

The number of connected smart phones and tablets is increasing rapidly and the mobile data is expected to grow up to 10 times in the next five year period. This means that operators need to densify the mobile networks and increase the capacity of the mobile networks. As a result, millions of base stations will be deployed closer to the end users.
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