专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5331665A Decoder device for decoding convolutionally encoded message 失效
标题翻译：用于解码卷积编码消息的解码器装置
公开(公告)号：US5331665A
公开(公告)日：1994-07-19
申请号：US878731
申请日：1992-05-05
申请人： Hans J. J. Busschaert , Peter P. F. Reusens , Ronny M. A. Van Camp
发明人： Hans J. J. Busschaert , Peter P. F. Reusens , Ronny M. A. Van Camp
IPC分类号： H04L25/08 , H03M13/23 , H03M13/41 , H03D1/00 , G06F11/10 , H03M13/12 , H04L27/06
CPC分类号： H03M13/41
摘要： A decoder device (VD) used for decoding digital messages according to the Viterbi convolutional decoding algorithm. This Viterbi decoder (VD) may be integrated in a portion of a single electronic chip for inclusion in a receiver of a handportable mobile station of a digital cellular radio system. The decoder (VD) includes a first module (VITALFA) to calculate transition probabilities for the possible state transitions between two successive states of the decoder, and a second module (VIPROB) to calculate, as a function of the state transition probabilities, path probabilities for the possible paths constituted by successive state transitions and ending in each of these states, and to select the path having the highest path probability value. The first/second module (VITALFA/VIPROB) of the device (VD) further calculates a state transition/path bit error rate which is function of the difference between the bits (softbits) received in the first module (VITALFA) and the bits (coded bits) expected for a same state transition/path respectively.
摘要翻译：用于根据维特比卷积解码算法解码数字消息的解码器装置（VD）。该维特比解码器（VD）可以集成在单个电子芯片的一部分中，以包含在数字蜂窝无线电系统的手持移动台的接收机中。解码器（VD）包括第一模块（VITALFA），用于计算解码器的两个连续状态之间的可能状态转换的转换概率，以及第二模块（VIPROB），以根据状态转移概率来计算路径概率对于由连续状态转换构成的可能路径并且以这些状态中的每一个结束，并选择具有最高路径概率值的路径。设备（VD）的第一/第二模块（VITALFA / VIPROB）还计算状态转换/路径误码率，其是在第一模块（VITALFA）中接收的比特（软比特）与比特编码比特）分别预期相同的状态转换/路径。

IPRDB

热门服务

关于我们

友情链接

联系方式