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    • 32. 发明申请
    • USER APPARATUS, BASE STATION APPARATUS, AND COMMUNICATION CONTROL METHOD
    • 用户装置,基站装置和通信控制方法
    • US20110164532A1
    • 2011-07-07
    • US12935031
    • 2009-03-25
    • Teruo KawamuraYoshihisa KishiyamaKenichi HiguchiMamoru Sawahashi
    • Teruo KawamuraYoshihisa KishiyamaKenichi HiguchiMamoru Sawahashi
    • H04W28/00
    • H04L27/0008H04L1/0003H04L1/0009H04L1/0017H04L1/0026H04L5/0007H04L5/0037H04L5/0046H04L5/0053H04L5/006H04L5/0091H04L25/0228H04L25/03834H04L27/2614H04L27/2628H04L27/2636H04L27/265
    • 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 inverse fast Fourier transform on the signal in the frequency domain on which waveform shaping has been performed so as to generate a transmission signal; and a transmission unit configured to transmit the transmission signal by radio.
    • 应用单载波方案和多载波方案的无线电接入方案的用户装置包括:无线接入方案设置单元,被配置为设置无线电接入方案; 离散付里叶变换单元,被配置为当所述无线电接入方案是所述单载波方案时,在调制符号序列上执行离散傅里叶变换; 串行并行转换单元,被配置为当所述无线电接入方案是所述多载波方案时对所述调制符号序列执行串行并行转换; 频域信号生成单元,被配置为向已经执行了离散付里叶变换的已调制符号序列或已经执行了串行并行转换的解调符号序列分配无线电资源以产生频域中的信号; 波形整形滤波器,被配置为对频域中的信号执行波形整形; 发送信号生成单元,被配置为对已经执行了波形整形的频域中的信号进行快速傅立叶逆变换,以产生发送信号; 以及发送单元,被配置为通过无线电发送所述发送信号。
    • 35. 发明申请
    • MOBILE COMMUNICATION SYSTEM, RECEIVER AND METHOD
    • 移动通信系统,接收机和方法
    • US20110090893A1
    • 2011-04-21
    • US12936270
    • 2009-03-03
    • Kenichi HiguchiHiroyuki Kawai
    • Kenichi HiguchiHiroyuki Kawai
    • H04L27/00H04B7/216
    • H04B7/0413H04J11/0046H04L25/0246H04L27/2647H04L2025/03426
    • A transmitter in a mobile communication system code-multiplexes transmission symbols together with spreading codes, performs inverse Fourier transform and transmits the result from multiple transmit antennas. A receiver in the mobile communication system performs Fourier transform on signals received at multiple receive antennas, extracts signal components of individual subcarriers and estimates symbols in accordance with a QR decomposition algorithm. A unitary matrix is derived such that a product of a spreading matrix including spreading elements as its elements and a channel matrix representing radio channel states is equal to a product of the unitary matrix and a triangular matrix. A reception vector, a unitary matrix and a triangular matrix are used to estimate symbol candidates transmitted from individual transmit antennas.
    • 移动通信系统中的发射机将传输符号与扩展码一起进行码复用,执行逆傅里叶变换,并从多个发射天线发射结果。 移动通信系统中的接收机对在多个接收天线处接收到的信号执行付里叶变换,根据QR分解算法提取各个子载波的信号分量和估计符号。 导出单一矩阵,使得包括扩展元素作为其元素的扩展矩阵和表示无线电信道状态的信道矩阵的乘积等于酉矩阵和三角矩阵的乘积。 接收矢量,酉矩阵和三角矩阵用于估计从各个发射天线发射的符号候选。