| US 7,526,258 B2 | ||
| Method and apparatus for transmitting signals, method and apparatus for receiving the signals, and communication system utilizing the same | ||
| Seigo Nakao, Gifu (Japan); and Yasuhiro Tanaka, Ichinomiya (Japan) | ||
| Assigned to Sanyo Electric Co., Ltd., Osaka (Japan) | ||
| Filed on Jan. 28, 2005, as Appl. No. 11/44,014. | ||
| Claims priority of application No. 2004-019807 (JP), filed on Jan. 28, 2004; application No. 2004-068223 (JP), filed on Mar. 10, 2004; application No. 2004-216186 (JP), filed on Jul. 23, 2004; and application No. 2005-015813 (JP), filed on Jan. 24, 2005. | ||
| Prior Publication US 2005/0164655 A1, Jul. 28, 2005 | ||
| Int. Cl. H04B 7/02 (2006.01) | ||
| U.S. Cl. 455—101 [455/277.1; 375/267] | 17 Claims |
| 1. A transmitting apparatus comprising:
a plurality of antennas;
a transmitter which transmits signals using a plurality of carriers via the plurality of antennas; and
a storage unit which stores respectively a plurality of known signals that correspond respectively to the plurality of antennas
and are to be transmitted from said transmitter in a predetermined period,
wherein among the plurality of known signals stored by said storage unit a known signal corresponding to one of the plurality
of antennas uses carriers which differ at least partially from carriers used for a known signal corresponding to another antenna
among the plurality of antennas, and
wherein, among the plurality of known signals stored by said storage unit, an autocorrelation characteristic of a known signal
corresponding to one of the plurality of antennas is defined in such a manner as to be higher than that of a known signal
corresponding to another antenna among the plurality of antennas.
|