| US 7,515,714 B2 | ||
| Communication apparatus and communication system | ||
| Masayuki Orihashi, Funabashi (Japan); Yutaka Murakami, Yokohama (Japan); Katsuaki Abe, Yokohama (Japan); and Akihiko Matsuoka, Yokohama (Japan) | ||
| Assigned to Panasonic Corporation, Osaka (Japan) | ||
| Appl. No. 10/502,048 PCT Filed Feb. 27, 2003, PCT No. PCT/JP03/02174 § 371(c)(1), (2), (4) Date Jul. 30, 2004, PCT Pub. No. WO03/073689, PCT Pub. Date Sep. 04, 2003. |
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| Claims priority of application No. 2002-054064 (JP), filed on Feb. 28, 2002; application No. 2002-132068 (JP), filed on May 07, 2002; and application No. 2003-048364 (JP), filed on Feb. 25, 2003. | ||
| Prior Publication US 2005/0123138 A1, Jun. 09, 2005 | ||
| Int. Cl. H04F 9/00 (2006.01) | ||
| U.S. Cl. 380—255 [375/150] | 4 Claims |
| 1. A communication apparatus, comprising:
a reference signal generating section that generates a first reference signal to enable a communicating party to estimate
a propagation environment;
a transmitting section that transmits the first reference signal;
a storing section that stores a known signal known between the apparatus and the communicating party
a propagation estimating section that obtains correlation between the known signal and a second reference signal transmitted
from the communicating party, and generates a delay profile as an estimation value of propagation environment;
a first data acquiring section that reads out first data associated with the delay profile generated in the propagation estimating
section, from a reference table that associates the delay profile with the first data; and
a decoding section that decodes a transmission signal encoded and transmitted using an estimation value of the propagation
environment estimated by the communicating party using the first reference signal, to obtain second data using the first data
read out by the first data acquiring section.
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