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    • 2. 发明公开
    • Fast joint detection
    • Schnelle Auskreuzungsdetektion
    • EP2093895A1
    • 2009-08-26
    • EP09161683.9
    • 2003-08-15
    • INTERDIGITAL TECHNOLOGY CORPORATION
    • Kwak, JaeyoungHaim, John, W.Zeira, ArielaPan, Jung-Lin
    • H04B1/707
    • H04B1/71052H04B2201/70707
    • K data signals, or bursts, are transmitted over a shared spectrum in a code division multiple access communication format. A combined signal is received and sampled over the shared spectrum, as a plurality of received vector versions. The combined signal includes the K transmitted data signals. A plurality of system matrices and an associated covariance matrix using codes and estimated impulse responses of the K data signals is produced. Each system matrix corresponds to a received vector version. The system and covariance matrices are extended and approximated as block circulant matrices. A diagonal matrix of each of the extended and approximated system and covariance matrices are determined by prime factor algorithm - fast Fourier transform (PFA-FFT) without division of the matrix. The received vector versions are extended. A product of the diagonal matrices and the extended received vector versions is taken. An inverse block discrete Fourier transform is performed by a PFA-FFT on a result of the product to produce the estimated data of the K data signals.
    • K数据信号或脉冲串以码分多址通信格式通过共享频谱发送。 组合信号在共享频谱上被接收和采样,作为多个接收的矢量版本。 组合信号包括K个发送的数据信号。 产生多个系统矩阵和使用K个数据信号的代码和估计的脉冲响应的相关协方差矩阵。 每个系统矩阵对应于接收到的矢量版本。 系统和协方差矩阵被扩展和近似为块循环矩阵。 每个扩展和近似的系统和协方差矩阵的对角矩阵由素数因子算法 - 快速傅立叶变换(PFA-FFT)确定,而不分割矩阵。 收到的矢量版本被扩展。 采用对角矩阵和扩展接收向量版本的乘积。 通过PFA-FFT对乘积的结果执行逆块离散傅里叶变换,以产生K个数据信号的估计数据。