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 (4) for cancelling signals from undesired sources introduced to a signal received from a desired source using a feedback signal. A phase variation canceller (5) 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 (6) compares an output signal 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(A3) |
申请公布日期 |
1996.04.10 |
申请号 |
EP19940110661 |
申请日期 |
1994.07.08 |
申请人 |
NEC CORPORATION |
发明人 |
USHIROKAWA, AKIHISA;YOSHIDA, SHOSEI |
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 |
|
代理人 |
|
主权项 |
|
地址 |
|