Telus this week announced that it has successfully tested new HSPA+ Dual Cell technology which it says will double the theoretical speed of its wireless data network when the technology is deployed in 2011.

The Dual Cell technology uses multiplexing techniques to combine two wireless data carriers, operating at a theoretical of up to 21 Mb/s each, into a single carrier with theoretical downlink speeds up to 42 Mb/s.

While the theoretical download speeds are 42 Mb/s, the actual throughput consumers can expect is expected to be closer to 8 Mb/s. While considerably less than the theoretical maximum, it would still be roughly double the 4 Mb/s being achieved today. Actual download speeds are typically a function of the device being used; how far a user is from a cell tower; and how congested the network is at the time of downloading.

Telus claims to be the only North American carrier to have successfully tested HSPA+ Dual Cell technology in its wireless labs and to announce deployment in its commercial network. Telstra in Australia is currently the only operator in the world known to have deployed this capability in its network.

Once the new technology is rolled out on the Telus network, consumers will also require a new HSPA+ Dual Cell compatible device in order to achieve higher download speeds. Data sticks with Dual cell technology are expected to be commercially available during the first quarter of 2011. Smartphones with dual cell technology are not expected until late in 2011.

Discuss in Digital Home's Telus and Koodo Wireless forum .