Abstract: A mobile radio communication apparatus comprises a wireless transmitter-receiver device configured to perform transmission/reception of a radio signal, a signal processing device including a resource to which functions are defined, wherein the resource handles at least a modem function and a protocol function, and configured to perform a signal processing necessary in the transmission/reception by use of the resource, and a controller that controls the signal processing device to redefine, to the resource, another modem function and another protocol function corresponding to respective one of the mobile communication systems.

Abstract: Radio communication apparatus for receiving OFDM signal from base station and transmitting FH signal to base station, using sub-channels, base station comparing hopping pattern information items indicating hopping patterns from radio communication apparatuses including radio communication apparatus, and generating collision information when hopping patterns include colliding hopping patterns, includes estimation unit configured to estimate channel response values of sub-channels based on OFDM signal, selector which selects, from sub-channels, several sub-channels which have higher channel response values than a value, each of channel response values being expressed by power level, signal-to-noise power ratio, or signal-to-interference ratio, determination unit configured to determine hopping pattern from selected sub-channels, transmitter which transmits, to base station, hopping pattern information item indicating determined hopping pattern, receiver which receives collision information from base station, an

Abstract: a radio communication system which includes a base station apparatus and terminal apparatuses and performs TDD two-way communications using an OFDM signal including subcarriers in a downstream communication from the base station apparatus to each terminal apparatus, and an FH signal having the same frequency band as that of the subcarriers in an upstream communication from the each terminal apparatus to the base station apparatus, the each terminal apparatus estimates transmission channel characteristics of the subcarriers based on the OFDM signal received, transmits an estimation result of the estimation unit to the base station apparatus, and the base station apparatus assigns, to the each terminal apparatus, at least one of subcarriers to be used in the downstream communication of the subcarriers and a hopping pattern to be used in the upstream communication, based on the estimation result transmitted from the each terminal apparatus.

Abstract: Decoding apparatus comprises EX-OR circuit exclusive ORing the Reed-Muller code and exclusive Ored value of mask symbol candidate pattern and the information data corresponding to the pattern, first decoder calculating checksum of the EX-OR circuit output and majority-judging the checksum to decode a part of the second portion of the information data, second decoder exclusive ORing the EX-OR circuit output and a product of the part of the second portion and the orthogonal codes and majority-judging the exclusive OR result to decode a remaining part of the second portion, Reed-Muller encoder encoding the information data, and minimum detector detecting the minimum of Euclidean distance between an output from the Reed-Muller encoder and the Reed-Muller code supplied to the arithmetic operation unit while a plurality of candidate patterns of the mask symbols are supplied to the arithmetic operation unit.

Abstract: A portable terminal communicates with a plurality of base stations by use of an OFDM signal. The portable terminal includes a communication unit sending and receiving the OFDM signal to and from the base stations, a switching timing detector, and an OFDM signal controller. The switching timing detector detects switching timing at which handover and a normal state are switched therebetween. The OFDM signal controller changes a guard time length of the OFDM signal upon detecting the timing by the switching timing detector.

Abstract: A wireless system according to the present invention, comprising: a wireless apparatus which performs a broadcast service for a plurality of wireless terminals; simplex first wireless channels each being set between the wireless terminal and the plurality of wireless terminals, in which the wireless apparatus performs the broadcast service to the plurality of wireless terminals; and a bidirectional second wireless channel set between the wireless apparatus and at least portion of the plurality of wireless terminals, which offers an supplemental service relating to the broadcast service.

Abstract: A radio communication apparatus compatible with a plurality of communication systems and application services comprises a radio transmitting/receiving unit for transmitting and receiving a radio signal, signal processing circuit for executing part of digital signal processing which may be executed when a radio signal is transmitted or received, first processors connected to the signal processing circuit for at least executing communication control related to connection between the radio communication apparatus and the communication systems, and an application program related to the application services, and second processors connected to the signal processing circuit for at least executing another part of the digital signal processing, and control of the signal processing circuit, the amount of processing of the second processors being greater than the amount of processing of the first processors, the processing concerning the executing unit.

Abstract: A mobile radio communication apparatus comprises a wireless transmitter-receiver device configured to perform transmission/reception of a radio signal, a signal processing device including a resource to which functions are defined, wherein the resource handles at least a modem function and a protocol function, and configured to perform a signal processing necessary in the transmission/reception by use of the resource, and a controller that controls the signal processing device to redefine, to the resource, another modem function and another protocol function corresponding to respective one of the mobile communication systems.

Abstract: The present invention is directed to a qualification method for testing a radio communication system including a plurality of radio terminals. The method includes providing a representative terminal having a machine type identical to a machine type of the plurality of radio terminals, and executing a qualification test on the representative terminal so as to determine whether or not the representative terminal can be used in a desired radio communication system from a plurality of radio communication systems. The method also includes receiving a test success message indicating that the representative terminal passed the qualification test, and notifying the test success message to the plurality of radio terminals. The present invention also relates to a computer program product and apparatus for performing the qualification test.

Abstract: A mobile radio communication apparatus comprises a wireless transmitter-receiver device configured to perform transmission/reception of a radio signal, a signal processing device including a resource to which functions are defined, wherein the resource handles at least a modem function and a protocol function, and configured to perform a signal processing necessary in the transmission/reception by use of the resource, and a controller that controls the signal processing device to redefine, to the resource, another modem function and another protocol function corresponding to respective one of the mobile communication systems.

Abstract: Decoding apparatus comprises EX-OR circuit exclusive ORing the Reed-Muller code and exclusive Ored value of mask symbol candidate pattern and the information data corresponding to the pattern, first decoder calculating checksum of the EX-OR circuit output and majority-judging the checksum to decode a part of the second portion of the information data, second decoder exclusive ORing the EX-OR circuit output and a product of the part of the second portion and the orthogonal codes and majority-judging the exclusive OR result to decode a remaining part of the second portion, Reed-Muller encoder encoding the information data, and minimum detector detecting the minimum of Euclidean distance between an output from the Reed-Muller encoder and the Reed-Muller code supplied to the arithmetic operation unit while a plurality of candidate patterns of the mask symbols are supplied to the arithmetic operation unit.

Abstract: According to the present invention, there is provided an adaptive array antenna including a plurality of antenna elements for receiving radio waves transmitted via multi-carrier waves, weighting means for weighting received signals received by the plurality of antenna elements with weight amounts for the respective antenna elements, adding means for adding up weighted signals by the weighting means, extracting means for extracting particular carrier components from the received signals received by the plurality of antenna elements, and weight setting means for setting the weight amounts for the respective antenna elements to the weighting means on the basis of the particular carrier components extracted by the extracting means.

Abstract: A large amount of user information is transmitted with good efficiency by means of a high-speed downlink by making transmission rates of an uplink circuit and a downlink asymmetrical. The radio communication system includes a plurality of base stations, a plurality of terminals, an uplink established between each of the base stations and each of the terminals for the purpose of radio transmission of prescribed information from a terminal to a base station, and a downlink circuit established between each of the terminals and each of the base station for the purpose of radio transmission of prescribed data from a base station to a terminal.

Abstract: Features of an adaptive antenna are a controlling portion 11 as a method for detecting the communication amount of each beam and an antenna controlling portion 7 as a controlling method for controlling the pattern of each beam corresponding to information of the detected communication amount. In particular, an exciting weight of each antenna element is controlled corresponding to the detected communication amount and thereby the pattern of each beam is controlled. Thus, the communication amounts of individual beams can be flexibly well-balanced. Consequently, the communication capacity of the base station can be effectively used.

Abstract: A large amount of user information is transmitted with good efficiency by means of a high-speed downlink by making transmission rates of an uplink circuit and a downlink asymmetrical. The radio communication system includes a plurality of base stations, a plurality of terminals, an uplink established between each of the base stations and each of the terminals for the purpose of radio transmission of prescribed information from a terminal to a base station, and a downlink circuit established between each of the terminals and each of the base station for the purpose of radio transmission of prescribed data from a base station to a terminal.

Abstract: A fuel control apparatus of an engine comprises fuel control means for controlling fuel supply means in such a manner that an amount of fuel supplied to the engine corresponds to an intake pressure on the basis of a signal outputted from intake pressure detecting means for detecting the intake pressure of an intake passageway, exhaust resistance changing means for changing an exhaust resistance of an exhaust passageway correspondingly to the operating condition of the engine, and correction means for correcting a supply amount of the fuel to be controlled by the fuel control means when the exhaust resistance of the exhaust passageway is changed by the exhaust resistance changing means.

Abstract: A large amount of user information is transmitted with good efficiency by means of a high-speed downlink by making transmission rates of an uplink circuit and a downlink asymmetrical. The radio communication system includes a plurality of base stations, a plurality of terminals, an uplink established between each of the base stations and each of the terminals for the purpose of radio transmission of prescribed information from a terminal to a base station, and a downlink circuit established between each of the terminals and each of the base station for the purpose of radio transmission of prescribed data from a base station to a terminal.