| US 7,515,875 B2 | ||
| Multi-carrier communication apparatus | ||
| Koji Horisaki, Yokohama (Japan) | ||
| Assigned to Kabushiki Kaisha Toshiba, Tokyo (Japan) | ||
| Filed on Nov. 15, 2005, as Appl. No. 11/273,327. | ||
| Application 11/273327 is a division of application No. 10/235828, filed on Sep. 06, 2002, granted, now 6,990,318. | ||
| Claims priority of application No. 2001-295107 (JP), filed on Sep. 26, 2001. | ||
| Prior Publication US 2006/0073789 A1, Apr. 06, 2006 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. H04B 7/00 (2006.01); H04Q 7/20 (2006.01) | ||
| U.S. Cl. 455—59 [455/63.1; 455/65; 455/67.14; 455/504; 370/203; 375/260] | 15 Claims |
| 1. A multi-carrier communication method of communicating between a first station and a second station as a destination station
using a reference signal used for estimating a state of a channel, the method comprising:
modulating data on a plurality of subcarriers;
transmitting a reference signal together with the data modulated to a destination station on every subcarrier; and
controlling a reference signal transmission pattern according to a given communication condition, the reference signal transmission
pattern including a transmission interval of the transmitted reference signal;
controlling the reference signal transmission pattern according to at least one of a communication quality in transmitting
data to the destination station, a response of the channel, and a degradation degree of the reference signal;
detecting at least one of the communication quality, the response, and the degradation degree of the reference signal; and
transmitting at least one of the communication quality, the response and the degradation degree of the reference signal.
|