| US 7,573,900 B2 | ||
| Apparatus and method for transmitting data using transmit antenna diversity in a packet service communication system | ||
| Sung-Jin Kim, Suwon-shi (Korea, Republic of); Hyeon-Woo Lee, Suwon-shi (Korea, Republic of); Sang-Hwan Park, Suwon-shi (Korea, Republic of); and Ju-Ho Lee, Suwon-shi (Korea, Republic of) | ||
| Assigned to Samsung Electronics Co., Ltd, (Korea, Republic of) | ||
| Filed on Jun. 30, 2003, as Appl. No. 10/611,103. | ||
| Claims priority of application No. 10-2002-0037697 (KR), filed on Jun. 29, 2002. | ||
| Prior Publication US 2004/0131038 A1, Jul. 08, 2004 | ||
| Int. Cl. H04J 3/16 (2006.01) | ||
| U.S. Cl. 370—465 [343/853; 455/69] | 14 Claims |
| 1. An apparatus for transmitting packet data through at least two transmit antennas in a packet data communication system
using transmit antenna diversity, comprising:
a feedback information interpreter for interpreting feedback information including channel quality indicators (CQIs) and antenna
weights received from a plurality of user equipments (UEs) requesting a packet data service;
a weight generator for classifying the antenna weights into orthogonal weight groups, selecting a maximum CQI for each of
the orthogonal weight groups, summing a maximum CQI pair corresponding to each orthogonal weight pair of the orthogonal weight
groups, and selecting weights corresponding to CQIs that form the greatest sum as antenna weights; and
a transmitter for transmitting the packet data by applying the selected weights to the transmit antennas.
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