Japan Getting Blazing Fast 42 Mbps Wireless Network

Ericsson equipment will power a 42 Mbps HSPA network for Japanese carrier EMOBILE, which is expected to launch the super-fast network in major cities before the end of this year. Ericsson said today that its gear will be deployed in Tokyo, Tokai and Osaka, among other major metropolitan areas. The upgraded EMOBILE network can offer such fast speeds because it will use a dual-cell HSPA solution, allowing the consumer to receive data over two blocks of spectrum simultaneously.

Thanks to the dual-cell HSPA (DC-HSPA) technology, EMOBILE’s new data offering will roughly double that of T-Mobile’s current HSPA+ network in the United States. Once EMOBILE completes this DC-HSPA implementation, it will be the first Japanese dual-cell HSPA network. Telecom gear-maker Ericsson first demonstrated the dual-cell technology at the 2009 Mobile World Congress and, at that time, expected commercial deployments would take place by the end of 2010.

Although the EMOBILE implementation of DC-HSPA doesn’t support MIMO, or multiple-input-multiple-output, technology, future versions will, Ericsson says. By simultaneously sending two data streams to a pair of antennas on the same frequency, a DC-HSPA network with MIMO support will double theoretical wireless broadband speeds to 84 Mbps. Both 3 Scandinavia and Telstra are looking at 2011 deployments for a 84 Mbps-capable network upgrade. For many operators, this will be a handy way to hold off on deploying Long Term Evolution (LTE) networks while the 4G technology and market matures.

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