Single user detection base station
AssigneeInterDigital Technology Corporation
InventorsParthapratim De, Ariela Zeira, Jung-Lin Pan, Raj Mani Misra
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Abstract
A code division multiple access base station is used in receiving a plurality of data signals over a shared spectrum. Each received data signal experiences a similar channel response. A combined signal of the received data signals is received over the shared spectrum. The combined signal is sampled at a multiple of the chip rate. A channel response is estimated. A column of a channel correlation matrix is determined using the estimated channel response. A spread data vector is determined using the determined column, the estimated channel response, the received combined signal and a fourier transform. Data of the data signals is estimated using the spread data vector.
Claims16
A code division multiple access base station for use in receiving a plurality of data signals received over a shared spectrum, each received data signal experiencing a similar channel response, the base station comprising:
- means for receiving a combined signal of the received data signals over the shared spectrum;
- means for sampling the combined signal at a multiple of a chip rate of the combined signal;
- means for estimating a channel response for the combined signal at the multiple of the chip rate;
- means for determining a column of a channel correlation matrix using the estimated channel response;
- means for determining a spread data vector using the determined column, the estimated channel response, the received combined signal and a fourier transform;
- and
- means for estimating data of the data signals using the spread data vector.
A code division multiple access base station for use in receiving a plurality of data signals received over a shared spectrum, each received data signal experiencing a similar channel response, the base station comprising:
- an antenna for receiving a combined signal of the received data signals over the shared spectrum;
- a sampling device for sampling the combined signal at a multiple of a chip rate of the received data signals;
- a channel estimation device for estimating a channel response for the combined signal at the multiple of the chip rate;
- and
- a single user detection device for determining a column of a channel correlation matrix using the estimated channel response, and for determining a spread data vector using the determined column, the estimated channel response, the received combined signal and a fourier transform;
- and
- wherein data of the data signals is estimated from the spread data vector.
Dependencies are inferred from the claim text.