OFDM receiving apparatus, OFDM transmission apparatus and OFDM communication method
    1.
    发明授权
    OFDM receiving apparatus, OFDM transmission apparatus and OFDM communication method 失效
    OFDM接收装置,OFDM发送装置和OFDM通信方式

    公开(公告)号:US06944119B1

    公开(公告)日:2005-09-13

    申请号:US09550167

    申请日:2000-04-14

    CPC分类号: H04L27/2613 H04L27/2662

    摘要: Synchronization symbol insertion section 102: inserts a synchronization symbol into a signal digital-modulated by modulation section 101. 0 symbol insertion section 103 inserts a 0 symbol into the signal with the synchronization symbol inserted. The signal with the synchronization symbol and 0 symbol inserted in this way is sent to IFFT section 104 to be subjected to an IFFT calculation. Then, guard interval insertion section 105 inserts a guard interval into the IFFT transformed signal waveform. Then, the signal with the guard interval inserted in this way is D/A-converted by D/A converter 106. The D/A-converted signal is subjected to normal radio transmission processing and then transmitted.

    摘要翻译: 同步符号插入部分102:将同步符号插入由调制部分101数字调制的信号中。 0符号插入部103将0符号插入到插入了同步符号的信号中。 以这种方式插入同步符号和0符号的信号被发送到IFFT部分104以进行IFFT计算。 然后,保护间隔插入部105将保护间隔插入IFFT变换信号波形。 然后,以这种方式插入保护间隔的信号由D / A转换器106进行D / A转换。 D / A转换信号经过正常的无线电传输处理,然后发送。

    OFDM communication apparatus
    2.
    发明授权
    OFDM communication apparatus 失效
    OFDM通信装置

    公开(公告)号:US07058006B2

    公开(公告)日:2006-06-06

    申请号:US10919251

    申请日:2004-08-17

    IPC分类号: H04M11/06

    CPC分类号: H04L27/2613 H04L27/2662

    摘要: Synchronization symbol insertion section 102 inserts a synchronization symbol into a signal digital-modulated by modulation section 101. 0 symbol insertion section 103 inserts a 0 symbol into the signal with the synchronization symbol inserted. The signal with the synchronization symbol and 0 symbol inserted in this way is sent to IFFT section 104 to be subjected to an IFFT calculation. Then, guard interval insertion section 105 inserts a guard interval into the IFFT-transformed signal waveform. Then, the signal with the guard interval inserted in this way is D/A-converted by D/A converter 106. The D/A-converted signal is subjected to normal radio transmission processing and then transmitted.

    摘要翻译: 同步符号插入部分102将同步符号插入由调制部分101数字调制的信号中。 0符号插入部103将0符号插入到插入了同步符号的信号中。 以这种方式插入同步符号和0符号的信号被发送到IFFT部分104以进行IFFT计算。 然后,保护间隔插入部105将保护间隔插入到IFFT变换信号波形中。 然后,以这种方式插入保护间隔的信号由D / A转换器106进行D / A转换。 D / A转换信号经过正常的无线电传输处理,然后发送。

    OFDM transmitting and receiving apparatus and OFDM transmitting and receiving method
    3.
    发明授权
    OFDM transmitting and receiving apparatus and OFDM transmitting and receiving method 失效
    OFDM发射和接收装置和OFDM发射和接收方法

    公开(公告)号:US06747945B2

    公开(公告)日:2004-06-08

    申请号:US09984944

    申请日:2001-10-31

    IPC分类号: H04J1100

    摘要: An average value of reception power of subcarriers A to D is calculated by a control circuit 162, and the average value is divided by envelops of received signals of subcarriers A to D, respectively, so as to calculate a coefficient signal of each subcarrier. Multipliers 106 to 109 multiply transmitting signals of subcarriers A to D output from mapping circuits 102 to 105 by the coefficient signals, respectively. Whereby, power between the subcarriers at a reception time can be maintained substantially constant so as to improve an error rate characteristic.

    摘要翻译: 通过控制电路162计算副载波A〜D的接收功率的平均值,分别将副载波A〜D的接收信号的包络除以平均值,计算各副载波的系数信号。 乘法器106至109分别乘以系数信号从映射电路102至105输出的子载波A至D的发送信号。 由此,可以将接收时间的子载波之间的功率保持为基本恒定,从而提高误码率特性。

    OFDM transmitting/receiving device and method
    4.
    发明授权
    OFDM transmitting/receiving device and method 有权
    OFDM发送/接收装置和方法

    公开(公告)号:US06345036B1

    公开(公告)日:2002-02-05

    申请号:US09582613

    申请日:2000-06-29

    IPC分类号: H04J1100

    摘要: An average value of reception power of subcarriers A to D is calculated by a control circuit 162, and the average value is divided by envelops of received signals of subcarriers A to D, respectively, so as to calculate a coefficient signal of each subcarrier. Multipliers 106 to 109 multiply transmitting signals of subcarriers A to D output from mapping circuits 102 to 105 by the coefficient signals, respectively. Whereby, power between the subcarriers at a reception time can be maintained substantially constant so as to improve an error rate characteristic.

    摘要翻译: 通过控制电路162计算副载波A〜D的接收功率的平均值,分别将副载波A〜D的接收信号的包络除以平均值,计算各副载波的系数信号。 乘法器106至109分别乘以系数信号从映射电路102至105输出的子载波A至D的发送信号。 由此,可以将接收时间的子载波之间的功率保持为基本恒定,从而提高误码率特性。

    OFDM communication apparatus
    5.
    发明申请
    OFDM communication apparatus 失效
    OFDM通信装置

    公开(公告)号:US20050013383A1

    公开(公告)日:2005-01-20

    申请号:US10919251

    申请日:2004-08-17

    IPC分类号: H04J11/00 H04L27/26 H04K1/10

    CPC分类号: H04L27/2613 H04L27/2662

    摘要: Synchronization symbol insertion section 102 inserts a synchronization symbol into a signal digital-modulated by modulation section 101. 0 symbol insertion section 103 inserts a 0 symbol into the signal with the synchronization symbol inserted. The signal with the synchronization symbol and 0 symbol inserted in this way is sent to IFFT section 104 to be subjected to an IFFT calculation. Then, guard interval insertion section 105 inserts a guard interval into the IFFT-transformed signal waveform. Then, the signal with the guard interval inserted in this way is D/A-converted by D/A converter 106. The D/A-converted signal is subjected to normal radio transmission processing and then transmitted.

    摘要翻译: 同步符号插入部分102将同步符号插入由调制部分101数字调制的信号中.0符号插入部分103将0符号插入到插入同步符号的信号中。 以这种方式插入同步符号和0符号的信号被发送到IFFT部分104以进行IFFT计算。 然后,保护间隔插入部105将保护间隔插入到IFFT变换信号波形中。 然后,以这种方式插入的保护间隔的信号由D / A转换器106进行D / A转换.D / A转换的信号经受​​正常的无线电传输处理,然后发送。

    TRANSMISSION DEVICE AND TRANSMISSION METHOD
    6.
    发明申请
    TRANSMISSION DEVICE AND TRANSMISSION METHOD 审中-公开
    传输设备和传输方法

    公开(公告)号:US20120051455A1

    公开(公告)日:2012-03-01

    申请号:US13266424

    申请日:2010-04-28

    申请人: Hiroaki Sudo

    发明人: Hiroaki Sudo

    IPC分类号: H04L27/04

    摘要: A transmission device capable of reducing the information amount of channel quality indicators (CQIs) without deteriorating throughput. In the device, an upper bit transmission control unit (104) sets the transmission intervals between upper bits of the CQIs inputted from an S/P conversion unit (103) to be longer than the transmission intervals between lower bits of the CQIs, and a lower bit transmission control unit (105) sets the transmission intervals between the lower bits of the CQIs inputted from the S/P conversion unit (103). Then, a transmission unit (107) transmits the CQI on the basis of the transmission intervals respectively set by the upper bit transmission control unit (104) and the lower bit transmission control unit (105).

    摘要翻译: 一种能够在不降低吞吐量的情况下减少信道质量指示符(CQI)的信息量的发送装置。 在设备中,高位传输控制单元(104)将从S / P转换单元(103)输入的CQI的高位之间的传输间隔设置为比CQI的低位之间的传输间隔长, 低位传输控制单元(105)设置从S / P转换单元(103)输入的CQI的低位之间的传输间隔。 然后,发送部(107)根据由高位发送控制部(104)和下位发送控制部(105)分别设定的发送间隔发送CQI。

    Communication system and communication method
    7.
    发明授权
    Communication system and communication method 有权
    通信系统和通信方法

    公开(公告)号:US08051198B2

    公开(公告)日:2011-11-01

    申请号:US10542657

    申请日:2004-11-24

    申请人: Hiroaki Sudo

    发明人: Hiroaki Sudo

    IPC分类号: G06F15/16

    摘要: A communication system enabling significant reduction in delay in handover between MAPs without increasing the number of MAPs to install. In the communication system, MAP(101) issues a Router Advertisement to AR(111) to AR(118). Particularly, MAP(101) assigns a plurality of Router Advertisements of a source of care-of address (RCOA) to register with HA to AR(118) of a cell on either side of a boundary of areas for each MAP. MN(107) receives a Router Advertisement transmitted from AR that is a communicating party among AR(119) to AR(126), and using the Router Advertisement, generates care-of addresses, RCOA and LCOA. AR(111) to AR(118) transmit the Router Advertisement RA generated by MAP(101) to MN in communication. Further, AR(111) to AR(118) transmit the care-or-addresses, RCOA and LCOA, issued from MN(107) to MAP(101).

    摘要翻译: 一种通信系统,其能够显着地减少MAP之间切换的延迟,而不增加要安装的MAP的数量。 在通信系统中,MAP(101)向AR(111)向AR(118)发布路由器通告。 特别地,MAP(101)分配转交地址(RCOA)的多个路由器通告,以向每个MAP的区域边界的任一侧的单元的HA向AR(118)注册。 MN(107)接收从AR(119)到AR(126)中的作为通信方的AR发送的路由器通告,并使用路由器通告生成转交地址,RCOA和LCOA。 AR(111)到AR(118)将通过MAP(101)生成的路由器通告RA传送到MN进行通信。 此外,AR(111)到AR(118)向MN(107)发送从MN(107)发送到MAP(101)的认证或地址RCOA和LCOA。

    Transmission apparatus and transmission method
    8.
    发明授权
    Transmission apparatus and transmission method 有权
    传输装置及传输方式

    公开(公告)号:US07826871B2

    公开(公告)日:2010-11-02

    申请号:US11814658

    申请日:2006-01-24

    申请人: Hiroaki Sudo

    发明人: Hiroaki Sudo

    IPC分类号: H04M1/00

    摘要: There is provided a transmission device capable of preventing increase of retransmission information or encoding redundant bit and improving a throughput in a MIMO communication method. In this device, an encoding unit (130) subjects data transmitted from a first transmission antenna (110) and a second transmission antenna (120) each formed by a plurality of antennas, to encoding processing all at once. Modulation units (113, 123) modulate the data encoded by the encoding unit (130) for each of the first and the second transmission antennas (110, 120). Transmission units (115, 125) process the modulated data so that it can be transmitted from the corresponding first and the second antennas (110, 120). A transmission control unit (160) performs transmission control of the data transmitted from the respective antennas (110, 120). When retransmitting data, the transmission control unit (160) retransmits the data transmitted from a transmission antenna having a smaller number of antennas than the first and the second antennas (110, 120).

    摘要翻译: 提供了一种能够防止重传信息的增加或编码冗余比特并且提高MIMO通信方法中的吞吐量的传输装置。 在该装置中,编码单元(130)对由多个天线构成的第一发送天线(110)和第二发送天线(120)发送的数据进行一次全部的编码处理。 调制单元(113,123)对第一和第二发送天线(110,120)中的每一个调制由编码单元(130)编码的数据。 传输单元(115,125)处理调制数据,使得其可以从对应的第一和第二天线(110,120)传输。 发送控制单元(160)对从各个天线(110,120)发送的数据进行发送控制。 当重传数据时,发送控制单元(160)重发从具有比第一和第二天线(110,120)小的天线数的发​​送天线发送的数据。

    CDMA transmission apparatus and CDMA transmission method
    9.
    发明授权
    CDMA transmission apparatus and CDMA transmission method 有权
    CDMA传输装置和CDMA传输方式

    公开(公告)号:US07764711B2

    公开(公告)日:2010-07-27

    申请号:US11767124

    申请日:2007-06-22

    申请人: Hiroaki Sudo

    发明人: Hiroaki Sudo

    IPC分类号: H04J1/00

    摘要: A control section (110) recognizes the type of data included in a transmission signal and outputs a control signal (C1) to an S/P conversion section (101) and a spreading control section (107). The S/P conversion section (101) apportions a specific type of data output from the control section (110) to different transmission systems. Spreading sections (102, 103) carry out spreading processing on the specific type of data output from the S/P conversion section (101) with different spreading codes assigned thereto under the control of the spreading control section (107). The data output from the spreading sections (102, 103) is transmitted by radio through addition sections (104-1, 104-2), transmission sections (105-1, 105-2) and antennas (106-1, 106-2). In this way, it is possible to improve the reception performance on the receiving side for specific data while maintaining the transmission efficiency of an MIMO communication system.

    摘要翻译: 控制部(110)识别包含在发送信号中的数据的种类,并将控制信号(C1)输出到S / P转换部(101)和扩展控制部(107)。 S / P转换部分(101)将从控制部分(110)输出的特定类型的数据分配给不同的传输系统。 在扩展控制部分(107)的控制下,扩展部分(102,103)对由S / P转换部分(101)输出的特定类型的数据进行扩展处理,具有不同的分配给它的扩展码。 通过加法部(104-1,104-2),发送部(105-1,105-2)和天线(106-1,106-2)发送来自扩频部(102,103)的数据输出 )。 以这种方式,可以在保持MIMO通信系统的传输效率的同时,提高接收侧的特定数据的接收性能。

    OFDM transmission/reception apparatus
    10.
    发明授权
    OFDM transmission/reception apparatus 有权
    OFDM发送/接收装置

    公开(公告)号:US07558190B2

    公开(公告)日:2009-07-07

    申请号:US11497263

    申请日:2006-08-02

    申请人: Hiroaki Sudo

    发明人: Hiroaki Sudo

    IPC分类号: H04J11/00 H04K1/10

    摘要: Modulation section 201 performs modulation processing on transmission data. Mapping control section 202 controls mapping of the baseband signal onto the subcarriers so that the important information conventionally transmitted by one subcarrier is transmitted by two subcarriers and one of the two subcarriers should be the subcarrier with a carrier frequency signal of frequency 0 which was conventionally not used. IFFT section 203 performs IFFT processing on the modulated transmission data. Transmission section 204 performs transmission processing on the IFFT-processed transmission data and transmits the processed transmission data from antenna 205.

    摘要翻译: 调制部201对发送数据进行调制处理。 映射控制部分202控制基带信号到子载波上的映射,使得由一个子载波传统传送的重要信息由两个子载波发送,并且两个子载波中的一个应当是具有频率为0的载波频率信号的子载波,其通常不是 用过的。 IFFT部203对调制后的发送数据进行IFFT处理。 发送部204对经IFFT处理的发送数据进行发送处理,并从天线205发送经处理的发送数据。