BROADCAST SYSTEM AND METHOD FOR ERROR CORRECTION USING SEPARATELY RECEIVED REDUNDANT DATA AND BROADCAST DATA

    公开(公告)号:US20190356411A1

    公开(公告)日:2019-11-21

    申请号:US16530343

    申请日:2019-08-02

    Abstract: A control device for use in a broadcast system includes a broadcast controller that controls a broadcast transmitter of the broadcast system that broadcasts broadcast signals in a coverage area for reception by terminals including a broadcast receiver and a broadband receiver, and a broadband controller that controls a broadband server of a broadband system that provides redundancy data to terminals within the coverage area. The broadband controller is configured to control the provision of redundancy data by the broadband server for use by one or more terminals which use the redundancy data together with broadcast signals received via said broadcast system for recovering content received within the broadcast signals and/or provided via the broadband system.

    TRANSMISSION APPARATUS AND METHOD USING PRE-DISTORTION

    公开(公告)号:US20160156487A1

    公开(公告)日:2016-06-02

    申请号:US15017166

    申请日:2016-02-05

    Abstract: The present invention relates to a transmission apparatus and a corresponding transmission method for transmitting data within a multi-carrier transmission system comprising two or more transmission apparatuses that are configured to transmit the same data. To avoid destructive interferences a transmission apparatus (10) is proposed comprising a signal input (30) configured to receive multi-carrier signals (S(k)) carrying data to be transmitted, a distortion unit (32) configured to distort said multi-carrier signals (S(k)) by use of a distortion function (P(k)) including a phase parameter for differently modulating the phase of said multi-carrier signals (S(k)), wherein said distortion function (P(k)) is different from distortion functions used by other transmission apparatuses, whose coverage areas overlap with the coverage area of the present transmission apparatus, by using a phase parameter that is different from the phase parameter used by said other transmission apparatuses, and a transmission unit (34) configured to transmit said distorted multi-carrier signals as transmission signal (Tx(k)).

    OFDM transmitter comprising a pre-distortion unit, an OFDM modulator and a filter
    4.
    发明授权
    OFDM transmitter comprising a pre-distortion unit, an OFDM modulator and a filter 有权
    OFDM发射机,包括预失真单元,OFDM调制器和滤波器

    公开(公告)号:US09525442B2

    公开(公告)日:2016-12-20

    申请号:US14766586

    申请日:2014-02-11

    CPC classification number: H04B1/0475 H04L25/03828 H04L27/2626

    Abstract: An OFDM encoding apparatus for encoding OFDM symbols into an OFDM signal includes: a pre-distortion unit that pre-distorts OFDM symbols into pre-distorted OFDM symbols, the OFDM symbols including payload data and each being carried on multiple OFDM subcarriers; an OFDM generator that generates an OFDM signal from the pre-distorted OFDM symbols by OFDM modulating the pre-distorted OFDM symbols; and a filter that filters the OFDM signal to obtain a filtered OFDM signal, the filter being configured to attenuate the spectrum of the OFDM signal in frequency bands outside the signal bandwidth of the OFDM signal by applying a filter transfer function to the OFDM signal. The pre-distortion unit is configured to apply a pre-distortion transfer function equal to the inverse of the filter transfer function to the OFDM symbols.

    Abstract translation: 用于将OFDM符号编码为OFDM信号的OFDM编码装置包括:预失真单元,其将OFDM符号预失真为预失真的OFDM符号,所述OFDM符号包括有效载荷数据,并且每个OFDM符号在多个OFDM子载波上承载; OFDM发生器,其通过对所述预失真的OFDM符号进行OFDM调制从所述预失真的OFDM符号生成OFDM信号; 以及滤波器,对所述OFDM信号进行滤波以获得经滤波的OFDM信号,所述滤波器被配置为通过对所述OFDM信号应用滤波器传递函数来衰减所述OFDM信号的信号带宽外的频带中的OFDM信号的频谱。 预失真单元被配置为将等于滤波器传递函数的逆的预失真传递函数应用于OFDM符号。

    Transmission apparatus and method using pre-distortion
    6.
    发明授权
    Transmission apparatus and method using pre-distortion 有权
    使用预失真的传输设备和方法

    公开(公告)号:US09300499B2

    公开(公告)日:2016-03-29

    申请号:US14711050

    申请日:2015-05-13

    Abstract: The present invention relates to a transmission apparatus and a corresponding transmission method for transmitting data within a multi-carrier transmission system comprising two or more transmission apparatuses that are configured to transmit the same data. To avoid destructive interferences a transmission apparatus (10) is proposed comprising a signal input (30) configured to receive multi-carrier signals (S(k)) carrying data to be transmitted, a distortion unit (32) configured to distort said multi-carrier signals (S(k)) by use of a distortion function (P(k)) including a phase parameter for differently modulating the phase of said multi-carrier signals (S(k)), wherein said distortion function (P(k)) is different from distortion functions used by other transmission apparatuses, whose coverage areas overlap with the coverage area of the present transmission apparatus, by using a phase parameter that is different from the phase parameter used by said other transmission apparatuses, and a transmission unit (34) configured to transmit said distorted multi-carrier signals as transmission signal (Tx(k)).

    Abstract translation: 本发明涉及一种在多载波传输系统内发送数据的发送装置和相应的发送方法,该多载波传输系统包括被配置为发送相同数据的两个或多个发送装置。 为了避免破坏性干扰,提出了一种发送装置(10),其包括被配置为接收承载要发送的数据的多载波信号(S(k))的信号输入(30),失真单元(32) 使用包括用于不同地调制所述多载波信号(S(k))的相位的相位参数的失真函数(P(k))的载波信号(S(k)),其中所述失真函数 ))不同于其覆盖区域与本发送装置的覆盖区域重叠的其他发送装置使用的失真函数,通过使用与所述其他发送装置使用的相位参数不同的相位参数,以及发送单元 (34),被配置为发送所述失真的多载波信号作为发送信号(Tx(k))。

    CONTROL DEVICE AND METHOD FOR USE IN A BROADCAST SYSTEM
    8.
    发明申请
    CONTROL DEVICE AND METHOD FOR USE IN A BROADCAST SYSTEM 有权
    用于广播系统的控制装置和方法

    公开(公告)号:US20150280861A1

    公开(公告)日:2015-10-01

    申请号:US14437417

    申请日:2013-11-22

    Abstract: A control device for use in a broadcast system includes a broadcast controller that controls a broadcast transmitter of the broadcast system that broadcasts broadcast signals in a coverage area for reception by terminals including a broadcast receiver and a broadband receiver, and a broadband controller that controls a broadband server of a broadband system that provides redundancy data to terminals within the coverage area. The broadband controller is configured to control the provision of redundancy data by the broadband server for use by one or more terminals which use the redundancy data together with broadcast signals received via said broadcast system for recovering content received within the broadcast signals and/or provided via the broadband system.

    Abstract translation: 用于广播系统的控制装置包括广播控制器,其控制广播系统的广播发射机,广播系统在广播接收机和宽带接收机的终端的广播区域中广播广播信号,以及宽带控制器, 向覆盖区内的终端提供冗余数据的宽带系统的宽带服务器。 宽带控制器被配置为控制由宽带服务器提供的冗余数据供一个或多个终端使用,所述终端使用冗余数据以及经由所述广播系统接收的广播信号,用于恢复在广播信号内接收的内容和/或经由 宽带系统。

    Receiver for receiving data in a broadcast system

    公开(公告)号:US10333759B2

    公开(公告)日:2019-06-25

    申请号:US16126244

    申请日:2018-09-10

    Abstract: A receiver for receiving data in a broadcast system comprises a broadcast receiver that receives via said broadcast system a receiver input data stream comprising a plurality of channel symbols represented by constellation points in a constellation diagram, a demodulator that demodulates said channel symbols into codewords, and a decoder that decodes said codewords into output data words. A redundancy calculator determines a required amount of redundancy data required for correct demodulation and decoding by use of the originally received channel symbol and additional redundancy data. A broadband request unit requests, if demodulation of a channel symbol and/or decoding of a codeword is erroneous or likely to fail, a required amount of redundancy data via a broadband system, that is received by a broadband receiver via said broadband system. Said demodulator and/or said decoder is configured to use said redundancy data for demodulation and decoding, respectively.

    Receiver for receiving data in a broadcast system

    公开(公告)号:US10110352B2

    公开(公告)日:2018-10-23

    申请号:US15610095

    申请日:2017-05-31

    Abstract: A receiver for receiving data in a broadcast system comprises a broadcast receiver that receives via said broadcast system a receiver input data stream comprising a plurality of channel symbols represented by constellation points in a constellation diagram, a demodulator that demodulates said channel symbols into codewords, and a decoder that decodes said codewords into output data words. A redundancy calculator determines a required amount of redundancy data required for correct demodulation and decoding by use of the originally received channel symbol and additional redundancy data. A broadband request unit requests, if demodulation of a channel symbol and/or decoding of a codeword is erroneous or likely to fail, a required amount of redundancy data via a broadband system, that is received by a broadband receiver via said broadband system. Said demodulator and/or said decoder is configured to use said redundancy data for demodulation and decoding, respectively.

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