发明名称 |
MOBILE COMMUNICATION TERMINAL OF SPREAD SPECTRUM COMMUNICATION SYSTEM |
摘要 |
<p>PROBLEM TO BE SOLVED: To suppress the decline of line quality when a mobile communication terminal is used near the head part of a human body. SOLUTION: A plurality of antennas 1 and 6 are arranged so as to reduce the cross-correlation of reception waves, signals received by the plurality of antennas 1 and 6 are inputted and reception signals are delayed by delay means 5 and 9 so as to make the time difference of the respective reception signals be at least more than the 1-chip time of a spreading code. The respective reception signals thus prevented from interfering with each other is then synthesized by a synthesis means 10 and the output signals of the synthesis means 10 are inputted to a rake reception means 12. By the directivity of the antennas when used near the human body, the reduction of the spread of delay dispersion is prevented and the decline of a path diversity gain by rake reception is suppressed.</p> |
申请公布号 |
JP2000031889(A) |
申请公布日期 |
2000.01.28 |
申请号 |
JP19980196870 |
申请日期 |
1998.07.13 |
申请人 |
HITACHI LTD |
发明人 |
SUDO SHIGEYUKI;HIKINO OSAMU;HIGUCHI KAZUTOSHI |
分类号 |
H04J13/00;H04B1/7115;H04B7/26;H04W16/28;H04W88/02;(IPC1-7):H04B7/26;H04J13/04 |
主分类号 |
H04J13/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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