发明名称 |
CDMA Receiver with interference and phase variation canceller. |
摘要 |
<p>A receiver is disclosed for a DS/CDMA communication system wherein a symbol is spread with a predetermined spread code to produce a DS/CDMA signal which is transmitted on a radio frequency carrier. The receiver includes an interference canceller for cancelling signals from undesired sources introduced to a signal received from a desired source using a feedback signal. A phase variation canceller is provided for cancelling a phase variation that occurs in an interval between successive symbols of the received signal. Both cancellers are connected in series. A decision circuit compares an input signal from the interference canceller or from the phase variation canceller with a threshold and produces an output representing one of two discrete values depending on whether it is higher or lower than the threshold. A correction circuit derives a correction signal from a signal produced by the interference canceller and applies it to the interference canceller as the feedback signal. <IMAGE></p> |
申请公布号 |
EP0633677(A2) |
申请公布日期 |
1995.01.11 |
申请号 |
EP19940110661 |
申请日期 |
1994.07.08 |
申请人 |
NEC CORPORATION |
发明人 |
USHIROKAWA, AKIHISA, C/O NEC CORPORATION;YOSHIDA, SHOSEI, C/O NEC CORPORATION |
分类号 |
H04B1/10;H04B1/707;H04B1/7097;H04B7/216;H04J13/00;H04L25/03;(IPC1-7):H04J13/00;H04B7/26 |
主分类号 |
H04B1/10 |
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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