MOMENTARY INFORMATION PROCESSING SYSTEM

本课题旨在为“21世纪无线多媒体中的脑与神经”奠定基础。纳米MOS器件物理学研究了0.1um MOSFET工艺技术的研究与开发。对超薄栅极氧化物的击穿现象与可靠性进行了评价。此外，还建立了掺杂剂在浅结中的扩散模型。这些结果将在TCAD系统中得到应用。Flexware系统柔性功能的四端新型mos器件，矢量量化处理器，最高有效数字优先的计算方案，已开发用于实时运动图像压缩。结果表明，ITOPS/1W处理器的计算能力是传统处理器的2万倍。针对光布线高速模式识别芯片，研究了光布线的设计方法、光布线的制造工艺以及光发射/接收器件的集成技术。建立了集成光波导的设计与实现方法。研究了高可靠的SS-CDMA无线通信系统——千兆赫波段无线多媒体信息终端。用于下行链路访问；从基站到手持终端，开发了采用2.46Hz前端AIN SAW匹配滤波器的分组SS-CDMA方案。用于上行接入；从终端到基站，利用声波卷积器实现了SS-CDMA蜂窝系统的准同步。在半径150m的小区内，成功地获得了64ch/语音速率的CDMA信道数。

The purpose of this research project is to establish the basis of "brain and nerve in 21 st century's wireless multimedia."1. Nano-meter MOS device physicsResearch and development of 0.1um MOSFET process technology have been investigated. Breakdown phenomena of ultra-thin gate oxide were evaluated in relation to reliability. Furthermore, diffusion model of dopant in a shallow junction were proposed. These results are going to be adopted in TCAD system.2. Flexware systemFlexible functional four-terminal neu-MOS devices, vector quantization processor, most-significant- digit-first calculation scheme, have been developed for real-time motion picture compression. As a result, it is shown that ITOPS/1W processor, whose calculation power is 20,000 times as much as conventional one, can be realized.3. Optical wiring parallel processing LSI chipFor aiming optical wiring high-speed pattern recognition chip, a design method for optical wiring, a fabrication process for optical wiring, and integration technologies for light emission/receiver devices have been developed. Design and implementation methods for integrated optical waveguides have been established.4.Highly reliable SS-CDMA wireless communication systemGigahertz-band wireless multimedia information terminal has been investigated. For downlink access ; from basestation to handy terminal, packet SS-CDMA scheme using 2.46Hz front-end AIN SAW matched filter has been developed. For uplink access ; from terminal to basestation, approzisately-synchronized SS-CDMA cellular system using SAW convolver has been developed. CDMA channel number of 64ch/voice-rate is successfully oobtained in a 150m-radius cell.