| US 7,545,772 B2 | ||
| Apparatus and method for assigning subchannels in an OFDMA communication system | ||
| In-Seok Hwang, Seoul (Korea, Republic of); Soon-Young Yoon, Seongnam-si (Korea, Republic of); Sang-Hoon Sung, Suwon-si (Korea, Republic of); Jae-Hee Cho, Seoul (Korea, Republic of); and Hoon Huh, Seongnam-si (Korea, Republic of) | ||
| Assigned to Samsung Electronics Co, Ltd, (Korea, Republic of) | ||
| Filed on Nov. 01, 2004, as Appl. No. 10/978,670. | ||
| Claims priority of application No. 10-2003-0077081 (KR), filed on Oct. 31, 2003. | ||
| Prior Publication US 2005/0094597 A1, May 05, 2005 | ||
| Int. Cl. H04Q 7/00 (2006.01); H04Q 7/28 (2006.01); H04B 7/212 (2006.01) | ||
| U.S. Cl. 370—329 [370/341; 370/348] | 16 Claims |
| 1. A method for assigning subchannels in a wireless communication system, the method comprising the steps of:
(1) generating (Q−1) subcarrier groups by classifying Q(Q−1) subcarrier bands;
(2) detecting subcarrier bands corresponding to a sequence from Q subcarrier bands of each of the (Q−1) subcarrier groups;
(3) assigning the detected subcarrier bands as a first subchannel;
(4) interleaving the (Q−1) subcarrier groups and detecting subcarrier bands corresponding to an interleaved sequence from
the Q subcarrier bands of each of the (Q−1) subcarrier groups; and
(5) assigning the subcarrier bands detected from each of the interleaved (Q−1) subcarrier groups as a second subchannel;
wherein the sequence is expressed as
S0=α,α2,α3, . . . ,αQ−2,αQ−1,
where S0 denotes the sequence, Q denotes a size of a Galois Field, and α denotes a primitive element of a Galois Field (Q).
|