发明名称 |
Efficient joint detection |
摘要 |
Data signals are received over a shared spectrum in a code division multiple access communication format as a combined signal. The combined signal is sampled as a plurality of received vector versions. A plurality of system matrices and an associated covariance matrix using codes and estimated impulse responses of the 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.
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申请公布号 |
US7643584(B2) |
申请公布日期 |
2010.01.05 |
申请号 |
US20090358739 |
申请日期 |
2009.01.23 |
申请人 |
INTERDIGITAL TECHNOLOGY CORPORATION |
发明人 |
KWAK JAEYOUNG;HAIM JOHN W.;ZEIRA ARIELA;PAN JUNG-LIN |
分类号 |
H04L27/06;H04B1/707;H04J11/00 |
主分类号 |
H04L27/06 |
代理机构 |
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