| US 7,548,577 B2 | ||
| Frequency domain joint detection for wireless communication systems | ||
| Jung-Lin Pan, Selden, Pa. (US); Yingming Tsai, Boonton, N.J. (US); and Guodong Zhang, Farmingdale, N.Y. (US) | ||
| Assigned to InterDigital Technology Corporation, Wilmington, Del. (US) | ||
| Filed on May 26, 2006, as Appl. No. 11/441,881. | ||
| Claims priority of provisional application 60/687834, filed on Jun. 06, 2005. | ||
| Prior Publication US 2006/0274842 A1, Dec. 07, 2006 | ||
| Int. Cl. H04B 1/00 (2006.01) | ||
| U.S. Cl. 375—130 [375/147; 375/316; 375/340; 375/136] | 21 Claims |
| 1. A method for joint detection of data symbols in a frequency domain, the method comprising:
receiving data;
converting the data into parallel data by a serial-to-parallel converter;
performing a fast Fourier transform on the parallel data to convert the parallel data to frequency domain data by a fast Fourier
transform processor; and
performing frequency domain joint detection on the frequency domain data to obtain the data symbols of users jointly in a
frequency domain, wherein users are assigned a plurality of subcarriers and a spreading code with a spreading factor equal
to the number of subcarriers so that user data is spread with the spreading code and mapped to the subcarriers, and the frequency
domain joint detection is performed on the subcarriers.
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