| US 7,532,911 B2 | ||
| Random beamforming method for a MIMO system | ||
| Jong-Hyung Kwun, Seoul (Korea, Republic of); Chan-Soo Hwang, Yongin-si (Korea, Republic of); Eun-Yong Kim, Daejeon (Korea, Republic of); and Joo-Hwan Chun, Daejeon (Korea, Republic of) | ||
| Assigned to Samsung Electronics Co., Ltd, (Korea, Republic of); and Korea Advanced Institute of Science & Technology, (Korea, Republic of) | ||
| Filed on Mar. 29, 2006, as Appl. No. 11/392,433. | ||
| Claims priority of application No. 10-2005-0026138 (KR), filed on Mar. 29, 2005. | ||
| Prior Publication US 2006/0238268 A1, Oct. 26, 2006 | ||
| Int. Cl. H04M 1/00 (2006.01); H04B 1/16 (2006.01); H04B 1/10 (2006.01) | ||
| U.S. Cl. 455—562.1 [370/335; 370/295] | 7 Claims |
| 1. A transmission method based on random beamforming in a communication system with a base station for transmitting a signal
using at least two transmit antennas, and a plurality of mobile stations for receiving the signal using at least two receive
antennas, the method comprising the steps of:
receiving information about channel-by-channel transmission rates from the plurality of mobile stations;
allocating resources of different channels to at least two mobile stations on a basis of the received transmission rates during
a unit time; and
transmitting a signal through allocated channel resources based on random beamforming,
wherein random beamforming is a transmission scheme in which multi-user diversity and scheduling are combined, and
wherein the transmission rates are computed using a Signal to Interference plus Noise Ratio (SINR), and the SINR is computed
using a parameter representing a Minimum Mean-Square Error (MMSE) filter of each of the mobile stations, and a weight vector,
arbitrarily generated from the base station, multiplied by a transmission vector and a channel matrix.
|