WILLCOM's next-generation PHS system achieves transmission speed of 20 Mbps

Wilcom announced today that it has achieved a transmission speed of 20 Mbps in a radio station experiment for the "next generation PHS system". As the technology seems to be using "MIMO" scheduled to be used even in "IEEE 802.11n" which is the next generation high speed wireless LAN standard.

I think that it is a bit ahead of the realization, but since the maximum speed at the present time is 256 kbps, in the future it is possible to increase the speed by 80 times.

Details are as follows.
WILLCOM | Wireless station experiment for "next generation PHS system" achieves transmission speed of 20 Mbps

As an overview of the experiment, performance evaluation in the case of adopting the adaptive array antenna technology adopted in the current system as OFDM technology which is one of the core technologies of WILLCOM's next-generation PHS system at the frequency of 2.5 GHz band, It is said to be a demonstration experiment centered on the performance evaluation when MIMO technology is adopted for the next generation PHS system.

OFDM (Orthogonal Frequency Division Multiplexing) is a technology adopted in IEEE 802.11a, ETC, digital terrestrial broadcasting, wireless USB, etc. The following article has detailed explanation.

ITmedia Business Mobile: What is OFDM? 1 (1/3)

MIMO (Mimo) is an abbreviation for "Multiple Input Multiple Output". Uri is considerably faster than the existing wireless LAN. Actually products are out.

Wireless LAN | AirStation MIMO

Since two signals are sent at the same time, communication of 108 Mbps corresponding to twice the maximum speed of 54 Mbps of IEEE 802.11 g becomes possible.

Using the above technologies, the next-generation PHS seems to be about 20 Mbps. What about the price and so on? Since we use it on mobile, we are also concerned about power consumption.