发明名称 |
CDMA receiving apparatus, method, program and recording medium |
摘要 |
In a CDMA receiving apparatus, a delay profile using a desired constraint length is generated by a delay profile generating unit from received signal wave-form data recorded on a received signal wave-form buffer unit. Several demodulation paths are selected at peak position of the delay profile by the path search unit. Demodulation symbols which are generated from received signal wave-form data of each demodulation path by the channel demodulating unit are brought into in-phase by an adjustment angle which is obtained by the channel estimating unit. If the reception quality which is measured by the reception quality measuring unit is lower than a predetermined value for a combined demodulation symbol which is combined by a RAKE unit, the combination of said selected demodulation paths or the constraint length is changed to repeat the demodulation operation of the same received signal wave-form data.
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申请公布号 |
US7519107(B2) |
申请公布日期 |
2009.04.14 |
申请号 |
US20040894118 |
申请日期 |
2004.07.20 |
申请人 |
SHARP KABUSHIKI KAISHA |
发明人 |
SUGAHARA SHIRO |
分类号 |
H04B1/00;H04B1/10;H04B1/69;H04B1/707;H04B7/26;H04J13/00;H04L7/00 |
主分类号 |
H04B1/00 |
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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