Matsushita Electric Industrial Co., Ltd.

Toray Industries, Inc.

Fujitsu Corporation

Ricoh Company, Ltd.

Oki Electric Industry Co., Ltd.

Masatoshi Watanabe

Osamu Kato

Kazuyuki Miya

Makoto Sasaki

Hidetoshi Suzuki

Katsuhiko Hiramatsu

Mitsuru Uesugi

Takashi Toda

Kuniyuki Kajita

Masayuki Ueda

Kazuyoshi Iwayama

Izumi Horikawa

Michikazu Sakurai

Akinori Tatsumi

Eiji Katsura

Atsushi Iwaoka

Katsushige Yamada

Masaki Hayashi

Fumiyoshi Okano

Toyoki Ue

Toshio Kato

Masahito Yoshikawa

Takayuki Nakano

Shoichi Miyamoto

Yoshio Takahashi

Kuniyuki Tada

Akira Yanai

Ryoji Ichioka

Eiichi Minomiya

Masato Tsuji

Hikaru Amano

Daiho Sakuragi

Manabu Ogishima

Hiroshi Konta

Yohichiroh Mukunoki

Katsuji Morita

Tetsuya Miharada

Takaaki Katoh

Hiroyuki Shiratori

Naomi Hara

Takahiro Yoshikawa

Keiichi Kai

Hirokatsu Hiraoka

Fuminari Yashiro

Noboru Sugawara

Megumi Yamamoto

A process converts ethylbenzene in a C8 aromatic hydrocarbon mixture containing a large amount of non-aromatic hydrocarbons, mainly to benzene, by which the xylene loss is small, the deactivation rate of the catalyst can be reduced, and a high conversion rate to p-xylene can be attained. The process for converting ethylbenzene includes bringing a feedstock containing an alicyclic hydrocarbon(s) in an amount of not less than 1.0% by weight, ethylbenzene and xylene into contact with hydrogen in the presence of a catalyst to convert ethylbenzene mainly to benzene, wherein the catalyst is mainly composed of MFI zeolite and an inorganic oxide(s) and rhenium-supported, and wherein the conversion is carried out at a reaction pressure of not less than 1.0 MPa-G.

[object Object]

An external storage device of a component cost estimation system stores various cost information representing a component material and its cost in association with each other, and a component manufacturing step and a cost involved in the step in association with each other. An information processing apparatus specifies a material of a component to be manufactured, and a plurality of manufacturing steps. Then, the information processing apparatus retrieves a cost of the specified material, and costs corresponding to the specified manufacturing steps from the cost information, and estimates a cost of the component based on the retrieved costs. The cost of the component is computed by adding up the cost of the material and the costs involved in all the manufacturing steps.

Component cost estimation system, component cost estimation method, cost standard data providing system, cost standard data providing method, recording medium, and computer data signal

An estimation system for estimating an injection-molding related cost comprises an input unit, storage, a data processing unit, and an output unit. The storage stores a mold estimation function for each of cost items of a mold used to produce a molded product, and a mold estimation reference value table for recording mold estimation reference values in association with prescribed conditions. The data processing unit acquires a fabrication condition of the molded product through the input unit, reads the mold estimation function and one of the mold estimation reference values from the storage corresponding to the fabrication condition, and estimates a cost of the mold based on the mold estimation function and the selected mold estimation reference value. The output unit outputs a mold cost estimation result made by the data processing unit.

Injection-molding cost estimation system

This invention relates to base station control equipment, radio base station equipment and radio terminal equipment that together constitute a mobile communication system. These base station control equipment, radio base station equipment and radio terminal equipment of this invention update transmitting power of a radio channel allotted to a new visit-zone to a greater and suitable value in time sequence. Therefore, mobile communication system according to the invention can keep speech quality of a completed call and transmission quality at high levels, can improve the number of radio channels that can be formed in parallel in a common frequency band (system capacity) or an information content of information that can be transmitted in parallel with desired transmission quality, and can improve utilization efficiency of a radio frequency.

Base station control equipment, radio base station equipment, radio terminal equipment, and mobile communication system

A catalyst in which X-ray diffraction intensity ratio of the crystal lattice plane spacing d-value of 0.196&#xb1;0.002 nm to the crystal lattice plane spacing d-value of 0.386&#xb1;0.008 nm is in a range from 7:100 to 35:100 and a process for making the catalyst to contact with ethylbenzene containing xylenes in the presence of hydrogen.

Conversion catalyst for ethylbenzene containing xylenes and process for converting ethylbenzene containing xylenes by using catalyst

Coding sectionrecodes decoded data stored in decoded data storage section, data conversion sectionconverts data '0' and '1' output from coding sectionto &#x201c;1&#x201d; and &#x201c;&#x2212;1&#x201d; respectively, sum-of-product calculation sectionmultiplies the data output from data conversion sectionby the demodulated data (soft decision value) stored in demodulated data storage sectionand then calculates the sum of the products for 1 TTI and stores the sum-of-product result for each data rate, data rate decision sectiondecides the data rate corresponding to a maximum value of the sum-of-product results as the data rate of the demodulated data. This makes it possible to improve the accuracy of data rate decision and reduce decoding errors of a received signal.

Apparatus and method for decoding

A radio communication apparatus and system in a CDMA/TDD system includes a mobile station that detects received power of data received from a surrounding base station at a received power detecting circuit in switching a base station for communication while moving. When received power from a base station other than a main base station in current communication becomes higher than a predetermined level, the mobile station makes the base station a sub base station to transmit the same data as the main base station, and receives data from the main base station and the sub base station concurrently at a pair of correlators. After that, when the received power from the sub base station becomes higher than the received power from the main base station, the mobile station switches a main base station and a sub base station and transmits data to a new main base station.

Radio communication apparatus and method

In base station side equipment, a control channel for transmitting control information and a communication channel for transmitting information to each mobile station are spread with different synchronizing codes before being superposed by operating a switch to switch the output of an adder over to the output of a synchronizing code generator. Further, a synchronizing code is periodically inserted in a signal by one symbol length and the signal is transmitted over the superposed channel. In a plurality of base station side equipment, moreover, the synchronizing code and its transmission period are equal and the transmission timing is asynchronous and independent. A synchronizing correlator in mobile station side equipment obtains the correlation value of the whole chip phase in a synchronizing code transmission period using the synchronizing code and decides a base station which is transmitting the synchronizing code at the greatest correlating peak position to the closest one and further extracts symbol timing from the peak position.

Spectrum spread communication system

Coding section recodes decoded data stored in decoded data storage section , data conversion section converts data &ldquo;0&rdquo; and &ldquo;1&rdquo; output from coding section to &ldquo;1&rdquo; and &ldquo;&minus;1&rdquo; respectively, sum-of-product calculation section multiplies the data output from data conversion section by the demodulated data (soft decision value) stored in demodulated data storage section and then calculates the sum of the products for 1 TTI and stores the sum-of-product result for each data rate, data rate decision section decides the data rate corresponding to a maximum value of the sum-of-product results as the data rate of the demodulated data. This makes it possible to improve the accuracy of data rate decision and reduce decoding errors of a received signal.

The present invention relates to a radio communication apparatus and system in a CDCA/TDD system in which a mobile station detects received power of data received from a surrounding base station at a received power detecting circuit in switching a base station for communication as moving. When received power from a base station other than a main base station in current communication becomes higher than a predetermined level, the mobile station makes the base station a sub base station to transmit the same data as the main base station, and receives data from the main base station and the sub base station concurrently at a pair of correlators. After that, when the received power from the sub base station becomes higher than the received power from the main base station, the mobile station switches a main base station and a sub bass station and transmits data to a new main base station.

Radio communication system and method therefor

During asymmetric communications using only the uplink, frame configuration section transmits a signal made up of only pilot signals and transmission power control bits assembled into frames. The transmission power control method is the same as that for normal communications. In this case, since signals transmitted on the downlink are only pilot signals and transmission power control bits, it is possible to reduce the transmission rate considerably and transmit signals with its transmission power reduced by transmission signal amplitude control section . In this case, a long hierarchic orthogonal type spreading code is set as the spreading code used by spreader

CDMA transmission apparatus

A small number of users who provide high interference in the other users, such as a user transmitting a high rate signal, are selected beforehand. First, a signal of the user is demodulated to generate a replica, and a difference between a received signal and the replica is calculated, thereby canceling the interference in signals of the other users, and further improving the system capacity.

Method and apparatus for interference rejection

Signals subjected to orthogonal modulation with a plurality of carrier frequencies are added to detect peak power. Based on the peak power, a coefficient for suppressing an amplitude of a transmission baseband signal is calculated. Using the coefficient, the amplitude of a baseband signal to be inputted to a filter is suppressed. It is thereby possible to suppress the peak power assuredly, and by the effects of the filter, unnecessary frequencies are not generated.

Transmission apparatus

A base station transmits, in addition to a pilot channel, signals which are multiplexed with pilot symbols inserted in the respective signals in communication channels. As the transmission of the pilot channel as a reference signal for coherent detection is unnecessary with high power so as to attain high reliability, the pilot channel can be transmitted with low power by means of weight in comparison with the communication channel, so that interference with the communication channel of any other station is reduced. Moreover, accurate coherent detection can be made from the pilot symbol inserted in the communication channel on the mobile station side.

CDMA cellular radio transmission system

Growing community of inventors

Yokohama, Japan

Masatoshi Watanabe