OKI Unveils Base Band LSI, Compliant with Advanced PHS Standard
A single chip with voice and data communication functions for use in WILLCOM's handsets
ML7257
Tokyo, Japan, January 22, 2007 -- Oki Electric Industry Co., Ltd. (TSE: 6703) today unveiled the ML7257, its base band LSI for personal handyphone systems (PHS). This LSI is compliant with W-OAM(*1), the Advanced PHS communications standard that enables a communication speed of 204kbps, which is 1.6 times faster than the conventional speed of 128kbps. The LSI will be used in three PHS devices(*2) announced today from WILLCOM,Inc., the sole provider of PHS services in Japan.
"OKI has over 10 years of experience and a strong track record with PHS base band LSIs in Japan. We are pleased to provide our latest LSI for WILLCOM's new handsets today," said Masahiko Morioka, President of Silicon Solutions Company at Oki Electric Industry. "Taking this as an opportunity, in addition to Japan, we will provide this chip to Asian countries, such as China, where PHS terminal market is growing steadily. OKI will continue to develop and provide products for the 'personal and mobile' areas and contribute to the realization of smaller size, higher capability and lower power consumption terminals."
OKI's ML7257 is a PHS base band LSI that incorporates voice and data communication functions in a single chip. OKI succeeded in including the three types of modulation and demodulation functions defined by W-OAM, as well as all the voice compression functions in a single device. Thus, power consumption is reduced to two-thirds that of conventional DSP-based software solutions. For the CPU core, the LSI uses ARM7TDMI®, which is used in many mobile phones and PDAs around the world because of its high-performance, low power consumption and high-code efficiency.
W-OAM ensures stable communication by automatically selecting the modulation method depending on the frequency status. With this LSI, PHS data terminal vendors can easily develop W-OAM-compliant terminals for WILLCOM. The ML7257 also includes an application processor interface for adding functions to PHS data terminals, such as advanced applications for high-function terminals. Thus, vendors can also develop terminals with dual CPUs using the application processor.
OKI will continue to develop base band LSIs compliant with the higher-speed wireless multilevel modulation method advocated by WILLCOM, and LSIs for next generation PHS systems with OFDMA(*3) technology as the core for enabling high-speed WiMAX-level mobile broadband.
Glossary
- *1 :W-OAM (WILLCOM Optimized Adaptive Modulation)
This is the Advanced PHS standard advocated by WILLCOM.
- *2 :The PHS devices include
WX320K manufactured by Kyocera Corporation and WX220J, WX321J manufactured by Japan Radio Co., Ltd.
- *3 :OFDMA (Orthogonal Frequency Division Multiplexing Access)
This is a next generation wireless communication method advocated by WILLCOM.
About Oki Electric Industry Co., Ltd.
Founded in 1881, Oki Electric Industry Co., Ltd. is Japan's first telecommunications manufacturer, with its headquarters in Tokyo, Japan. OKI provides top-quality products, technologies and solutions to its customers through its info-telecom system business, semiconductor business and printer business. All three businesses function as a collective force to create exciting new products and technologies that satisfy a spectrum of customer needs in various markets. Visit OKI's global web site at http://www.oki.com/.
About WILLCOM, Inc.
WILLCOM, Inc. is a leading mobile data telecommunications company, providing PHS services in Japan. In addition to data telecommunications, WILLCOM introduced the "WILLCOM Flat-Rate Plan" in May 2005, the Japanese mobile industry's first fixed-rate voice communication service. WILLCOM has also introduced a series of other new services to the market, and currently has more than 3.5 million cumulative subscribers (as of November 2005). Learn more about Willcom at www.willcom-inc.com (available in English and Japanese).
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- * Information in the press releases is current on the date of the press announcement, but is subject to change without prior notice.