## Electron devices, Communication technology, Information processing technology

## High Accuracy Separation Method for Received Signals from Mobile Phones

Keyword: High speed communication technology which is more than 50 times faster, Candidate for world standard for next generation mobile communication, Integrated Collaborative Research Program with Industry

Organizations Involved

○ Dr. Gen Hori, Deputy Team Leader, Next Generation Mobile Communications Lab., RIKEN

○ Ken Umeno, President, Chaosware Inc.

(Team Leader, Next Generation Mobile Communications Lab., RIKEN)

G.Hori

K.Umeno

## 【Abstract】

The combination of the signal separation method developed by RIKEN which resemble information processing in human brain and the communication method based on chaos CDMA developed by Chaosware Inc.(cognitive CDMA) has been developed in “Integrated Collaborative Research Program with Industry” and has succeeded within a year in high accuracy separation of signals from mobile phones. (The project launch in Oct., 2006, Press release in Dec., 2007) It is expected to be a strong candidate of the world standard of next generation mobile communication and aims at standardization.

## [Summary of the technology transfer]

## Technological Impact

The information processing method of human brain which can extract and understand the voice of a particular person in the noisy situation in which many persons are talking to each other is successfully applied to develop a high accuracy separation method for signals received simultaneously from many mobile phones which enables high speed and large capacity communication which is more than 50 times faster than the third generation mobile phones.

## ● Social Impact

The result is expected to be a strong candidate for the fourth generation mobile communication which will be put to practical use on and after 2010. The new communication method which is a combination of two technologies both originated in Japan aims at the standardization in ITU.

## ●Special Features of the Collaboration

RIKEN proposed the new collaborative research style in academic-industrial alliance. This new model “Integrated Collaborative Research Program with Industry” is based on the parallel style for the technology transfer from the academic to industry, differed from the conventional linear type. The research stuffs from RIKEN and industrial company work in the same team at RIKEN campus, and a team leader from the company has an initiative to focus the research directions and targets for the effective technology transfer and the production.

## Project Background

RIKEN found that the communication method developed by Chaosware Inc. is Suitable when it faced with difficulties in separation of artificial signals of mobile phones in spite of efficiencies in separation of natural signals.

## Funding History

The research funding is supported by “Integrated Collaborative Research Program with Industry” in RIKEN.

## I ntellectual property protection

Patent Application: Domestic 1,

※ Not publication before examination

Comparison of the newly

eveloped method and the

conventional method in the

crosstalk of mobile phone

signals after separation

## Conventional technology with usual CDMA

## - crosstalk remains after separation

Newly technology method with chaos CDMA

- crosstalk vanishes after separation

## Turning point in the Project

OThe company has a talent (the president) who has worked on brain science in RIKEN and know the seed technology. (The promotion of such talents who have their experiences in both RIKEN and industry turns out to be effective to realize the parallel model.)

ORIKEN has a collaboration system which is open to venture companies.