Ruckus Wireless, a Sunnyvale start-up that develops WiFi technology designed to carry Internet TV signals through large homes, including around and through walls and other barriers, has raised $16 million in a fourth round of funding.

The round was led by Motorola Ventures and T-Online, and included other private investors. The company has already received $14 million from Sequoia, WK Technology and Sutter Hill, and those investors participated in latest round, the company said.

The company said it has 57 employees, and just opened an office in Taiwan, where it will hire 20 or so more people. The investment from T-Online, which is based in Germany, will help the company expand in the “hot” European market, the company told VentureBeat last week.

European countries are less encumbered than the US is with a legacy of cable and satellite providers, which have resisted upgrading to Internet TV.

The company says it has a better technology than existing products on the market, which usually require “buffering,” and thus slows down the experience of watching Internet TV.