	US 7,586,992 B2
	Apparatus and method for channel estimation and cyclic prefix reconstruction in an OFDM-STBC mobile communication system
Jong-Hyung Kwun, Suwon-si (Korea, Republic of); Eung-Sun Kim, Suwon-si (Korea, Republic of); Jong-Hyeuk Lee, Seongnam-si (Korea, Republic of); Gi-Hong Im, Pohang-si (Korea, Republic of); and Hui-Chul Won, Busan (Korea, Republic of)
Assigned to Samsung Electronics Co., Ltd, (Korea, Republic of); and Postech Foundation, (Korea, Republic of)
Filed on Jan. 19, 2006, as Appl. No. 11/335,268.
Claims priority of application No. 10-2005-0005152 (KR), filed on Jan. 19, 2005.
Prior Publication US 2006/0159196 A1, Jul. 20, 2006
Int. Cl. H04L 1/02 (2006.01)

U.S. Cl. 375—267 [375/260; 375/348; 375/350; 375/347; 370/319; 370/320; 370/321; 370/330; 370/335; 370/342; 370/346; 370/347; 342/150; 342/151; 342/152; 342/153; 342/154; 333/193; 333/194; 333/195; 333/196]

16 Claims

1. A method of receiving signals in an orthogonal frequency division multiplexing (OFDM) mobile communication system using at least two transmit antennas and one receive antenna, comprising the steps of:

(a) acquiring a final recovered sequence estimate of previous received symbols;

(b) canceling an inter-symbol interference (ISI) signal component from a first received symbol sequence by using the final recovered sequence estimate;

(d) simultaneously recovering an inter-carrier interference (ICI) signal component from the ISI-cancelled first received symbol sequence and canceling an ISI signal component from a second received symbol sequence, in which the second received symbol sequence is received next to the first received symbol sequence by using the first recovered sequence estimate;

(e) acquiring a second recovered sequence estimate of the ISI-cancelled second received symbol sequence; and

(f) recovering an ICI signal component from the ISI-cancelled second received symbol sequence by using the second recovered sequence estimate,

wherein the first received symbol sequence is received at a first time period and the second received symbol sequence is received at a second time period later than the first time period, and steps (c) to (f) are iterated a predetermined number of times.