| US 7,573,944 B2 | ||
| Apparatus and method for canceling inter-symbol interference in a broadband wireless communication system | ||
| Young-Bin Chang, Hwasung-si (Korea, Republic of); Chi-Woo Lim, Suwon-si (Korea, Republic of); Pan-Yuh Joo, Seoul (Korea, Republic of); and Jae-Weon Cho, Suwon-si (Korea, Republic of) | ||
| Assigned to Samsung Electronics Co., Ltd, (Korea, Republic of) | ||
| Filed on Oct. 20, 2005, as Appl. No. 11/254,681. | ||
| Claims priority of application No. 10-2004-0084336 (KR), filed on Oct. 21, 2004; and application No. 10-2005-0005202 (KR), filed on Jan. 20, 2005. | ||
| Prior Publication US 2006/0087961 A1, Apr. 27, 2006 | ||
| Int. Cl. H04L 27/28 (2006.01) | ||
| U.S. Cl. 375—260 | 42 Claims |
| 1. A transmitter in a broadband wireless communication system, comprising:
a controller for determining a cyclic prefix (CP) length, a puncturing pattern, and a time sample interval according to a
delay spread;
a puncturer for puncturing coded data according to the puncturing pattern;
an inverse fast Fourier transform (IFFT) processor for IFFT-processing the punctured coded data and outputting sample data;
a CP inserter for generating an orthogonal frequency division multiplexing (OFDM) symbol by inserting a copy of a last part
of the sample data before the sample data, the last part of the sample data being equal in length to the CP length; and
a digital-to-analog (D/A) converter for converting the OFDM symbol to an analog signal at a sampling rate determined by the
time sample interval.
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