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1. 发明申请

US20020154682A1 Soft handoff between cellular systems employing different encoding rates 有权
标题翻译：使用不同编码率的蜂窝系统之间的软切换
公开(公告)号：US20020154682A1
公开(公告)日：2002-10-24
申请号：US09801891
申请日：2001-03-08
申请人： MOTOROLA, INC.
发明人： Jiangnan Chen , Ron Rotstein , Yuda Luz , Louay A. Jalloul
IPC分类号： H04K001/00 , H04B015/00 , H04L027/30
CPC分类号： H04L1/0054 , H04B7/022 , H04W36/18
摘要： A receiver (200) is provided receiving signals from differing base stations (BTSA and BTSB). The signal from BTSA is encoded using a first rate convolutional encoder while the signal transmitted from BTSB is encoded using a second rate convolutional encoder. Since the multiple base station links may result in a different number of symbols being received for each bit transmitted, the symbols received for each link cannot be simply combined. Therefore, in the preferred embodiment of the present invention, the resulting symbols are passed to multiple branch metric circuits (210-211), where branch metrics (nulli) for the symbols are obtained. After the ith branch metrics for the base stations are computed, the branch metrics for each base station are passed to a combiner (212) where they are combined.
摘要翻译：提供接收机（200），接收来自不同基站（BTSA和BTSB）的信号。使用第一速率卷积编码器对来自BTSA的信号进行编码，而使用第二速率卷积编码器对从BTSB发送的信号进行编码。由于多个基站链路可能导致针对所发送的每个比特接收到不同数量的符号，因此不能简单地组合每个链路所接收的符号。因此，在本发明的优选实施例中，所得到的符号被传递到多个分支度量电路（210-211），其中获得符号的分支量度（μi）。在计算基站的第i个分支度量之后，将每个基站的分支度量传递到组合器（212），在那里组合它们。

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