Abstract:
PROBLEM TO BE SOLVED: To provide a diversity system in which the present mobile station device and a future mobile station device can transmit and receive at least a control signal without being conscious of a base station device provided with one antenna, two antennas or four antennas and a base station device provided with eight antennas. SOLUTION: The base station device (100a) receives, from the outside, a reference signal defined for each base station device and a reference signal, a control signal and a data signal defined for each mobile station device. The base station device (100a) includes an encoding part (10a), an encoding part (10b), signal processors (10c) to (17c), and antennas (10c-4 to 17c-4). The reference signal defined for each base station device, and the reference signal, the control signal and the data signal defined for each base station device, which are input to the base station (100a), are arranged in a resource block by the signal processors. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a wireless communication system, transmission apparatus, receiving apparatus and propagation path estimating method, capable of obtaining an accurate channel estimation result even if a region to apply beam forming thereto and a region not to apply beam forming thereto are mixed. SOLUTION: The invention relates to a wireless communication system characterized in that a transmission apparatus includes a mapping section for placing a modulation signal and a reference signal in a first class resource block and a second class resource block, wherein at least one of resource blocks neighboring in a time direction and a frequency direction of the first class resource block is placed to become the second class resource block, and a receiving apparatus includes: a resource block selecting section for selecting a group of resource blocks including at least one resource block, that is the second class resource block, from among resource blocks neighboring in the time direction and the frequency direction of the first class resource block; and a propagation path estimating section for estimating a propagation path while using the reference signal in the group of resource blocks selected by the resource block selecting section, regarding the first class resource block. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To improve throughput when performing communication using beam forming. SOLUTION: A base station device estimates an arrival direction of an up-link signal by using the up-link signal transmitted by a mobile station device. Next, arrangement of data signal and a reference signal to a resource block to which the beam forming is applied and adjustment of a power of the data signal and the reference signal are performed. At this time, the adjustment is performed by considering that a power of an unused subcarrier is used as the power of the reference signal. Next, a beam directivity control is performed by controlling a weight for directing a beam in the estimated arrival direction and a down-link signal is transmitted to the mobile station device. The mobile station device receives the down-link signal transmitted by the base station device and performs a channel estimation by using the reference signal included in the down-link signal. Finally, an equalization process is performed by using the estimated channel characteristic and the data signal is reproduced based on the signal after the equalization process. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide: a communication system capable of preventing the degradation of efficiency of transmission from a transmission device to a reception device; a transmission device; and a communication method. SOLUTION: The transmission device for communicating with a reception device includes: a data signal arrangement pattern selection part for selecting any of a plurality of data signal arrangement patterns different in the number of data signals arranged in a resource element; a reference signal transmission power increasing part for increasing transmission power of a reference signal arranged in the resource element based on the data signal arrangement pattern selected by the data signal arrangement pattern selection part; and a signal transmission part for transmitting, to the reception device, a data signal arranged in the resource element based on the data signal arrangement pattern selected by the data signal arrangement pattern selection part, and a reference signal arranged in the resource element having the transmission power increased by the reference signal transmission power increasing part. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To perform DVRB mapping to allow the reception quality of each distributed virtual resource block DVRB to be equal. SOLUTION: A radio transmission apparatus includes: a transmission diversity processing part for allowing a signal to be transmitted to each radio reception apparatus to be redundant, and generating a set of signals by redundancy; a multiplexing part for multiplexing the signals to a plurality of radio reception apparatuses, which are made to be redundant, to a physical resource block composed of a frequency band and a time band, which have predetermined widths, with the set of signals by redundancy as a unit; and a transmission part for transmitting the signal multiplexed by the multiplexing part. Each radio reception apparatus includes: a reception part for receiving the signals transmitted from the radio transmission apparatus; a multiplexing/separating part for extracting the signals to the radio reception apparatus from the signals multiplexed by the physical resource block out of the received signals, based on the arrangement order by the multiplexing part; and a transmission diversity synthesizing part for synthesizing the signals constituting the set of signals by redundancy out of the extracted signals, and generating the signal before redundancy. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a technique for facilitating the confirmation of the connection state of cables in analog electronic apparatus and supporting an actual connection work. SOLUTION: A video apparatus having an analog video input terminal 1a or an analog video output terminal 9 includes: a video signal processing circuit 6 for processing an input video signal; a circuit 6a for specifying connection source apparatus information arranged at the side of the analog video input terminal 1a of the video signal processing circuit 6; and the specifying information output circuit 8b of the self apparatus arranged at the side of the analog video output terminal 9 of the video signal processing circuit 6. The circuit 6a for specifying connection source apparatus confirms the connection of the analog video input terminal 1a with the connection source apparatus by obtaining connection source apparatus specifying information which is inputted from the analog video input terminal 1a. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To unify maneuverability of program reservation and enable program reservation even from a remote place, even in the case of a receiver of different manufacturers. SOLUTION: An EPG data acquisition means 501 receives a digital broadcast signal from a broadcasting station, and acquires electronic program guide (EPG) data showing a program guide from the signal. A reservation reception means 503 receives program reservation from a user on a web page. A reservation information forming means 504 forms program reservation information containing the received program reservation and a receiver ID of the user, on the basis of the acquired EPG data, and stores the information in a storage device 309. The stored program reservation information is encoded to a control instruction code for controlling program reservation process in a receiver of a broadcasting condition corresponding to a receiver ID, multiplexed by a broadcast signal with a suitable point and broadcasted. In a receiver 105, only a control instruction code having the own receiver ID is extracted, and program reservation processing is performed on the basis of the code. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To enable a usage of a content even when a terminal device exists in a limited area unconnectable to a public network, and enable a secure purchase of an authentic content when the terminal device moves to the outside of the limited area.SOLUTION: A local server device comprises: a limited area-purpose distribution device communication part 201 that acquires a provisional content to be distributed only in a limited area from a content storing device existing on the public network; a provisional content storage part 203 that stores the acquired provisional content; a provisional purchase-purpose content generation part 205 that adds the identification information of the limited area to the provisional content to generate a provisional purchase-purpose content; and a terminal authentication part 213 that authenticates the terminal device on the basis of first authentication information available only in the limited area. When a request comes from the authenticated terminal device, the provisional purchase-purpose content is distributed to the authenticated terminal device.
Abstract:
PROBLEM TO BE SOLVED: To uniquely determine data power of an OFDM symbol including a reference signal and data power of an OFDM symbol including no reference signal in a multicarrier communication system. SOLUTION: A transmission device sets power of the reference signal first and the reference signal and a power boost value PB next to find the power of a data signal of the OFDM symbol including no reference signal, and then determines the total of power of a data signal of the OFDM symbol including the reference signal so that R+D A =D B may be satisfied. Data power per subcarrier is found by dividing the total by the number of subcarriers of RE of a data signal in an RB in each OFDM symbol. Then a level of power control is set by RB pair, and the set power of the reference signal and the found data power per RB pair are transmitted as power of a transmission signal. COPYRIGHT: (C)2009,JPO&INPIT
Abstract translation:要解决的问题:在多载波通信系统中唯一确定包括参考信号的OFDM符号和不包括参考信号的OFDM符号的数据功率的数据功率。 解决方案:传输设备首先将参考信号的功率和参考信号以及旁路的功率提升值PB设置为不包括参考信号的OFDM符号的数据信号的功率,然后确定功率的总和 包括参考信号的OFDM符号的数据信号,使得可以满足R + D = D B SB>。 通过将总数除以每个OFDM符号中的RB中的数据信号的RE的子载波数来找到每个子载波的数据功率。 然后通过RB对设置功率控制电平,并且将参考信号的设定功率和每RB对的找到的数据功率作为发送信号的功率发送。 版权所有(C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a radio transmitter for capable of preventing a deterioration in a bit error rate and transmission efficiency and effectively utilizing the transmission power of each antenna. SOLUTION: The radio transmitter includes: a block encoding part for generating a double redundant signal from a modulated signal; a reference signal generating part for generating a reference signal; a mapping part for adjusting transmission power of respective transmission signals according to one or any of a plurality of signal arrangement patterns in which an antenna with the respective transmission signals including the reference signal and the redundant signal allocated, a time domain, a frequency domain and the transmission power of each transmission signal are allocated, and allocating the respective transmission signals; and a transmission part for transmitting the signals arranged by the mapping part. In the radio transmitter, in a first patten being one of the patterns, the redundant signal is allocated by half each to the same time domain and the same frequency domain of two antennas, and in the two antennas, the reference signal is allocated to the same time domain and different frequency domains in a pattern. COPYRIGHT: (C)2009,JPO&INPIT