| 发明名称 |
TRANSMISSION METHOD, TRANSMISSION APPARATUS AND COMMUNICATION SYSTEM |
| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve data transmission efficiency when a plurality of antennas are used to transmit data. <P>SOLUTION: A base station apparatus 201 changes, during data transmission, only the modulation systems rather than the transmission methods, in either of the transmission methods that include a transmission method X, in which modulated signals A and B including the same data are transmitted via respective ones of a plurality of antennas, and a transmission method Y in which modulated signals A and B including different data are transmitted via respective ones of the plurality of antennas. The base station apparatus 201 uses a determined transmission method and a determined modulation system to transmit the modulated signals A and B to a communication terminal apparatus 251. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
| 申请公布号 |
JP2005039807(A) |
申请公布日期 |
2005.02.10 |
| 申请号 |
JP20040190418 |
申请日期 |
2004.06.28 |
| 申请人 |
MATSUSHITA ELECTRIC IND CO LTD |
发明人 |
MURAKAMI YUTAKA;KOBAYASHI SEIHO;ORIHASHI MASAYUKI;MATSUOKA AKIHIKO |
| 分类号 |
H04L1/00;H04B7/04;H04B7/06;H04B7/26;H04J11/00;H04J15/00;H04L1/06;H04Q7/38 |
主分类号 |
H04L1/00 |
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