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    • 5. 发明申请
    • HYBRID REFERENCE SIGNAL WITH LOW PAPR FOR DFT-S-OFDM
    • WO2021090716A1
    • 2021-05-14
    • PCT/JP2020/040026
    • 2020-10-20
    • MITSUBISHI ELECTRIC CORPORATIONMITSUBISHI ELECTRIC R&D CENTRE EUROPE B.V.
    • BOUTTIER, Arnaud
    • H04L27/26
    • The invention relates to a method for transmitting at least a group of Kd data samples in a radio signal to be transmitted over a communication system, said radio signal being intended to be emitted by an emitter comprising at least one transmission antenna, said radio signal being provided by: determining a first position J1 and a second position J2 in a block of K samples; applying a DFT-spread-OFDM-type scheme to the block of K samples A = (A0;...; AK1), and obtaining an output signal representing a symbol comprising N complex samples Sn in the radio signal, with n = 0 to N-1; determining, in the output signal, a first position T1 and a second position T2 such that: J1=floor(T1xK/N); J2=ceil(T2xK/N); T2-T1=R, with R being a strictly positive integer; inserting, between the first position T1 and the second position T2 of the updated output signal, S reference samples and L cyclic prefix samples, with L being a positive or null integer, S being a strictly positive integer and R=S+L, to obtain a subsequent signal representing a hybrid symbol comprising a data section and a reference section; appending, to the hybrid symbol, a cyclic prefix of at least part of the hybrid symbol to obtain a signal representing the hybrid symbol appended with the cyclic prefix; and emitting the radio signal corresponding to the signal representing the hybrid symbol appended with the cyclic prefix.
    • 10. 发明申请
    • METHOD AND DEVICE FOR FORMING DFT-SPREAD OFDM SYMBOL INCLUDING DATA AND PILOTS
    • 用于形成包括数据和导频的DFT-扩展OFDM符号的方法和设备
    • WO2017110835A1
    • 2017-06-29
    • PCT/JP2016/088006
    • 2016-12-14
    • MITSUBISHI ELECTRIC CORPORATIONMITSUBISHI ELECTRIC R&D CENTRE EUROPE B.V.
    • MITSUBISHI ELECTRIC R&D CENTRE EUROPE B.V.BOUTTIER, ArnaudBRUNEL Loic
    • H04L27/26
    • H04L27/2636H04L25/03343H04L27/2613
    • A method and a device for forming a DFT-spread OFDM symbol including data and pilots, comprising: forms a pilot symbol in the time domain, the pilot symbol comprising at least two parts, a first part of the pilot symbol comprising samples of front pilots, a second part of the pilot symbol comprising null values, performing a DFT-spread OFDM modulation of the pilot symbol, precoding the data, putting the precoded data under the form of a data symbol in the time domain, the data symbol comprising at least two parts, a first part of the data symbol comprising null values, a second part of the data symbol comprising the data, performing a DFT-spread OFDM modulation of the data symbol, modifying a part of the DFT-spread OFDM modulated data symbol, combining the modified DFT-spread OFDM modulated data to the DFT-spread OFDM modulated pilot symbol.
    • 一种用于形成包括数据和导频的DFT扩展OFDM符号的方法和设备,包括:在时域中形成导频符号,所述导频符号包括至少两个部分,第一部分 所述导频符号包括前导频的采样,所述导频符号的第二部分包括空值,执行所述导频符号的DFT扩展OFDM调制,预编码所述数据,在所述时间中将所述预编码的数据置于数据符号的形式 所述数据符号包括至少两个部分,所述数据符号的第一部分包括空值,所述数据符号的第二部分包括所述数据,执行所述数据符号的DFT扩展OFDM调制,修改所述数据符号的一部分 DFT扩展OFDM调制数据符号,将修改的DFT扩展OFDM调制数据组合到DFT扩展OFDM调制导频符号。