发明名称 |
Single user detection circuit |
摘要 |
A circuit for use in a receiver receives a plurality of code division multiple access data signals simultaneously. Each data signal experiences a similar channel response. The circuit receives a combined signal over the shared spectrum in a time slot. The combined signal comprises the plurality of data signals. The combined signal is sampled at a multiple of a chip rate of the combined signal. The similar channel response is estimated. A channel response matrix or a channel correlation matrix is constructed based in part on the estimated channel response. A spread data vector is determined based in part on a fast Fourier transform (FFT) decomposition of a circulant version of the channel response matrix or channel correlation matrix. The spread data vector is despread to recover data from the matrix.
|
申请公布号 |
US2005180495(A1) |
申请公布日期 |
2005.08.18 |
申请号 |
US20050100901 |
申请日期 |
2005.04.07 |
申请人 |
INTERDIGITAL TECHNOLOGY CORPORATION |
发明人 |
PAN JUNG-LIN;DE PARTHAPRATIM;ZEIRA ARIELA |
分类号 |
H04L5/22;H04Q7/38;(IPC1-7):H04B1/707 |
主分类号 |
H04L5/22 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|