Abstract: To provide a radio communication method for enabling a control signal to be received with high quality and high efficiency, in the case of using spatial multiplexing transmission in data signals to transmit, and also transmitting the control signal in the same sub-frame, in the radio communication method of the invention, a mobile terminal apparatus receives a downlink signal including precoding information, separates a data signal and a control signal to assign to different radio resources, and performs MIMO-transmission on a signal of each transmission layer based on the precoding information, and a radio base station apparatus receives an uplink signal including the data signal and the control signal subjected to MIMO transmission, divides the uplink signal into data signals for each transmission layer, and reproduces the control signal from the uplink signal.

Abstract: To provide a mobile terminal apparatus and radio communication method for enabling feedback control information to be efficiently transmitted on uplink channels, a radio communication method of the invention is characterized by having in a mobile terminal apparatus the steps of receiving a signal for each of a plurality of component carriers from a radio base station apparatus, generating feedback control information for each component carrier from the signal, mapping the feedback control information for each component carrier to suitable radio resources based on the number of component carriers, the presence or absence of uplink transmission data, and the number of bits of control information to transmit as feedback, and transmitting an uplink transmission signal mapped to the radio resources.

Abstract: To provide a mobile terminal apparatus and radio communication method for enabling feedback control information to be efficiently transmitted with an uplink control channel signal, the radio communication method of the invention has, in a mobile terminal apparatus, the steps of receiving a signal for each of a plurality of component carriers from a radio base station apparatus, generating feedback control information for each component carrier from the signal, performing joint-coding on the feedback control information for each component carrier, mapping the feedback control information coded by the joint-coding to subcarriers, and transmitting an uplink transmission signal mapped to the subcarriers.

Abstract: To provide a radio base station apparatus, a mobile terminal apparatus and a radio access method that support each of a plurality of mobile communication systems when the plurality of mobile communication systems coexists, the configuration is provided in which in transmission in a mobile communication system having a system band comprised of a plurality of component carriers, the transmission data is subjected to frequency hopping in a single component carrier in a subframe, while being subjected to frequency hopping over mutually different component carriers in prior and subsequent subframes.

Abstract: The present invention relates to a code evaluation method comprising the steps of computing an auto-correlation function from a generated code; computing an evaluation reference value for determining quality of the generated code based on the auto-correlation function and a weighting factor determined depending on the evaluation reference value; and determining the quality of the generated code based on the evaluation reference value.

Abstract: Multiple reference signal transmission bandwidths are defined for system frequency bands and hierarchical reference signal bandwidths are defined for each reference signal transmission bandwidth such that a reference signal bandwidth lower than a highest-order reference signal bandwidth is a division of a higher-order reference signal bandwidth.

Abstract: A transmission apparatus used in a mobile communication system adopting a single carrier scheme in an uplink includes: multiplexing means configured to multiplex a pilot channel, a control channel, and a data channel; and transmission means configured to transmit a transmission symbol including at least the pilot channel and the control channel using the uplink. A first pilot channel used for a reception apparatus to measure channel state of the uplink is transmitted using a frequency band over a plurality of resource blocks. A second pilot channel for compensating for a channel transmitted by the uplink is transmitted by a resource block assigned to the transmission apparatus. Control channels of the transmission apparatus and the apparatus other than the transmission apparatus are orthogonalized with each other by a FDM scheme.

Abstract: The disclosed mobile station includes: a CAZAC code generation unit configured to generate CAZAC code according to a CAZAC sequence number reported from the base station; a cyclic shift unit configured to cyclically shift each symbol of the CAZAC code based on a cyclic shift number reported from the base station, and a block spreading unit that operates with the cyclic shift unit or operates instead of the cyclic shift unit, and that performs block spreading processing for the CAZAC code according to a block spreading number reported from the base station.

Abstract: A mobile station for wirelessly transmitting to a base station by DS-CDMA a signal which is spread by multiplying a spreading code includes a high-precision transmission timing control unit configured to control transmitting timings of transmitting signals so that a time difference at the base station among timings of receiving from a plurality of mobile stations approaches zero.

Abstract: A radio base station apparatus and radio communication method are provided whereby reception characteristics do not deteriorate even when the number of multiplexed users of an uplink control channel signal is increased. The radio communication method of the present invention includes a transmission step of a mobile terminal apparatus transmitting an uplink control channel signal orthogonally multiplexed among users including reference signals, a receiving step of the radio base station apparatus receiving the uplink control channel signal and a demodulation step of demodulating the uplink control channel signal using maximum likelihood detection.

Abstract: A user apparatus to which radio access schemes that are a single-carrier scheme and a multicarrier scheme are applied, includes: a radio access scheme setting unit configured to set a radio access scheme; a discrete Fourier transform unit configured to perform discrete Fourier transform on a modulated symbol sequence when the set radio access scheme is the single-carrier scheme; a serial parallel conversion unit configured to perform serial parallel conversion on a modulated symbol sequence when the set radio access scheme is the multicarrier scheme; a frequency domain signal generation unit configured to assign a radio resource to the modulated symbol sequence on which discrete Fourier transform has been performed or to the modulated symbol sequence on which serial parallel conversion has been performed to generate a frequency domain signal; a transmission signal generation unit configured to perform inverse fast Fourier transform on the frequency domain signal to generate a transmission signal; a transmissi

Abstract: A transmission apparatus for transmitting an uplink control signal by using a predetermined number of basic frequency blocks in a plurality of basic frequency blocks, wherein a system band is divided into a plurality of bands by a basic frequency block having a predetermined bandwidth, includes: a mapping unit configured to map control information to subcarriers in a basic frequency block in a given subframe; an inverse Fourier transform unit configured to perform inverse Fourier transform on a signal to which the control information is mapped; and a radio transmission unit configured to transmit a transmission signal, to a receiving apparatus by radio, including a signal on which inverse Fourier transform has been performed. In a subframe subsequent to the given subframe, the mapping unit maps the control information to subcarriers in a basic frequency block of a band different from a band of the basic frequency block in the given subframe.

Abstract: A user device for a mobile communication system employing a multicarrier scheme includes a control signal generating unit (241, 242) generating a control signal and a transmitting unit transmitting the control signal to a base station. The control signal is mapped (245, 246) to multiple frequency bands that are provided across a subframe but discontinuous in the frequency domain (see, for example, FIG. 3). Each of the frequency bands includes subcarriers used in orthogonal frequency division multiplexing (OFDM).

Abstract: In a closed-loop TPC for a channel using a wireless resource, to which frequency hopping is applied, a high quality reception is achieved for all RBs without applying another technique to each RB. This transmission power control method, in a mobile communications system that transmits signals by frequency hopping in a plurality of resource blocks, includes a transmission power control method that transmission-power controls a channel in a closed loop using a wireless resource to which frequency hopping is applied, measures a reception channel quality of received signals for each resource block (RB1 and RB2), and transmits a TPC command-bit via a downlink so that the reception quality that is independently measured at each resource block among the resource blocks is made equal to a target reception quality.

Abstract: A communications apparatus includes a receiving unit which receives a data channel for each predetermined transmission period; a determining unit which determines, for each data channel, acknowledgement information which indicates an acknowledgement or a non-acknowledgement; a generating unit which generates a control channel including the acknowledgement information; and a transmitting unit which transmits the control channel. For first and second data channels received during at least successive first and second transmission periods, the first and second acknowledgement information is provided. The second control channel which includes both the first and the second acknowledgement information which includes both the first and the second acknowledgement information is transmitted after a first control channel which includes the first acknowledgement information.

Abstract: A user apparatus to which radio access schemes of a single-carrier scheme and a multicarrier scheme are applied includes: a radio access scheme setting unit configured to set a radio access scheme; a discrete Fourier transform unit configured to perform discrete Fourier transform on a modulated symbol sequence when the radio access scheme is the single-carrier scheme; a serial parallel conversion unit configured to perform serial parallel conversion on the modulated symbol sequence when the radio access scheme is the multicarrier scheme; a frequency domain signal generation unit configured to assign radio resources to the modulated symbol sequence on which discrete Fourier transform has been performed or to the demodulated symbol sequence on which serial parallel conversion has been performed so as to generate a signal in the frequency domain; a waveform shaping filter configured to perform waveform shaping on the signal in the frequency domain; a transmission signal generation unit configured to perform inve

Abstract: A base station apparatus includes a communication unit configured to communicate with base stations of a plurality of adjacent cells; a management unit configured to manage frequency bands for use in the adjacent cells; and a determination unit configured to determine instruction contents according to status of use of the frequency bands. The instruction contents are reported to all or a part of the adjacent cells via the communication unit. The instruction contents specify: a type of a pilot channel transmitted by a user residing in an adjacent cell; whether pilot channels of each user are code-division multiplexed or not; and whether pilot channels of each user are frequency-division multiplexed or not, and the like.

Abstract: Provided are a flexible printed circuit that reduces the chance of the occurrence of short-circuit failures caused by swarf generated from punching out flexible printed circuit, and an electric circuit structure having this flexible printed circuit and an electric circuit substrate to which the flexible printed circuit is connected. A flexible printed circuit (100) has a wiring pattern (2) formed on the flexible base film (1). The flexible printed circuit (100) is individually punched out to be separated in a condition where the wiring pattern (2) is disposed on the base film (1), and the wiring pattern (2) has a narrowed portion (2c) near the edge of the base film (1).

Abstract: A base station includes: a first reception timing detecting unit configured to detect a reception timing of a packet received from a first mobile station of multiple mobile stations which is situated in a first sector; a second reception timing detecting unit configured to detect a reception timing of a packet received from a second mobile station of the multiple mobile stations which is situated in a second sector; a transmission timing determining unit configured to determine transmission timings of signals transmitted from the first mobile station and the second mobile station based on the reception timings detected by the first reception timing detecting unit and the second reception timing detecting unit; a control information generating unit configured to generate transmission timing control information for the first mobile station and the second mobile station based on the transmission timings; and a radio resource allocating unit configured to allocate orthogonal radio resources to the first mobile st

Abstract: A transmitting device for a mobile communication system employing a multicarrier scheme includes a mapping unit configured to map control information to subcarriers in a subframe; an inverse Fourier transform unit configured to inverse-Fourier-transform a signal of the mapped control information; and a transmitting unit configured to wirelessly transmit a transmission signal including the inverse-Fourier-transformed signal to a receiving device. The control information is mapped to control frequency bands that are discontinuous in the frequency domain and are provided across the subframe separately from frequency bands for a shared data channel. The mapping is performed such that the control information for the receiving device mapped to one of the control frequency bands is transmitted at the same time as the control information or the shared data channel for the receiving device mapped to a different frequency band.