| US 7,480,339 B2 | ||
| Apparatus and method for transmitting/receiving a pilot sequence in a mobile communication system using space-time trellis code | ||
| Chan-Soo Hwang, Yongin-shi (Korea, Republic of); Yung-Soo Kim, Songnam-shi (Korea, Republic of); Seung-Hoon Nam, Seoul (Korea, Republic of); and Jae-Hak Chung, Seoul (Korea, Republic of) | ||
| Assigned to Samsung Electronics Co., Ltd, (Korea, Republic of) | ||
| Filed on Oct. 28, 2003, as Appl. No. 10/695,579. | ||
| Claims priority of application No. 10-2003-0004582 (KR), filed on Jan. 23, 2003. | ||
| Prior Publication US 2004/0146025 A1, Jul. 29, 2004 | ||
| Int. Cl. H04B 7/02 (2006.01); H03D 1/00 (2006.01) | ||
| U.S. Cl. 375—267 [375/340] | 11 Claims |
| 1. An apparatus for transmitting a sequence for channel estimation through M transmission antennas in a mobile communication
system, the apparatus comprising:
a sequence generator for generating the sequence for the channel estimation;
P encoders for receiving P information bit streams and encoding the received P information bit streams with a space-time trellis
code (STTC);
M modulators for modulating information bit streams encoded from the P encoders as a punctured code into modulation symbol
streams respectively;
M puncturers for puncturing at least one modulation symbol in a predetermined position at each transmission antenna for each
of the modulation symbol streams output from the M modulators; and
M multiplexers individually connected to the M transmission antennas, for multiplexing each of the punctured signals output
from the M puncturers and the sequence to be inserted in the predetermined position,
wherein at least one of puncturing positions for the modulation symbol streams is different from other puncturing positions
at each antenna in a same transmission period.
|