| US 7,583,586 B2 | ||
| Apparatus and method for transmitting/receiving pilot signal in communication system using OFDM scheme | ||
| Sung-Eun Park, Suwon-si (Korea, Republic of); Seung-Hoon Choi, Suwon-si (Korea, Republic of); Dong-Seek Park, Yongin-si (Korea, Republic of); Jae-Yoel Kim, Gunpo-si (Korea, Republic of); Ji-Ho Jang, Seoul (Korea, Republic of); and Pan-Yuh Joo, Yongin-si (Korea, Republic of) | ||
| Assigned to Samsung Electronics Co., Ltd, (Korea, Republic of) | ||
| Filed on Jun. 27, 2005, as Appl. No. 11/167,663. | ||
| Claims priority of application No. 10-2004-0051468 (KR), filed on Jul. 02, 2004; and application No. 10-2004-0069408 (KR), filed on Aug. 26, 2004. | ||
| Prior Publication US 2006/0028976 A1, Feb. 09, 2006 | ||
| Int. Cl. H04J 11/00 (2006.01) | ||
| U.S. Cl. 370—209 [370/210; 370/335] | 57 Claims |
| 1. A method for transmitting a reference signal for identification of each cell in a communication system including a plurality
of cells each of which is identified by a cell identifier, the method comprising the steps of:
in response to input of the cell identifier, generating, by a block code encoder, a block code corresponding to the cell identifier
using a predetermined block code generator matrix;
generating a first part sequence by interleaving, by an interleaver, the block code according to at least one interleaving
scheme and performing, by an adder, an exclusive OR operation on the interleaved block code;
selecting a second part sequence corresponding to the cell identifier and from among predetermined sequences considering Peak-to-Average
Power Ratio (PAPR) reduction;
generating, by a combiner, a reference signal of a frequency domain by using the first part sequence and the second part sequence;
converting, by a transmitter, the reference signal of the frequency domain to a reference signal of a time domain through
an Inverse Fast Fourier Transform (IFFT) operation; and
transmitting, by the transmitter, the reference signal of the time domain in a over a reference signal transmission interval,
wherein the reference signal of the frequency domain is defined by:
 where PIDcell,S[k] denotes the reference signal, IDcell denotes the cell identifier, s denotes a sector identifier, k denotes a sub-carrier index, Nused denotes a number of used subcarriers, NFFT denotes a number of points of the IFFT operation, and qIDcell,S[m] denotes a setup sequence.
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