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1. 发明公开

EP0695054A2 Frequency multiplexing using polyphase filters and fast fourier transforms 失效
标题翻译：频繁多层次的手套Mehrphasenfilter和schnellen四变换
公开(公告)号：EP0695054A2
公开(公告)日：1996-01-31
申请号：EP95305004.4
申请日：1995-07-17
申请人： MMS SPACE SYSTEMS LIMITED
发明人： Wishart, Alexander Walker , Cornfield, Paul Simon
IPC分类号： H04L5/06
CPC分类号： H04J1/05
摘要： A digital signal processing apparatus for frequency multiplexing and demultiplexing of narrow band FDM signals has a first block fine processing stage (11) connected in series to a first block coarse processing stage (16, 17) and in parallel therewith a second block fine processing stage (11a) connected in series to a second block coarse processing stage (16, 17). The two stages 11 and 11a are coupled together at one side remote from the two coarse processing stages (16, 17) to provide a first port (14) and the stages (16 and 17) at the side remote from the port (14) provide a plurality of ports (15). Each stage (11, 11a) is a FIR lowpass filter and each stage (16, 17) incorporates a polyphase filter (16) in connection with a Fast Fourier Transform Unit (17).
摘要翻译：用于频带复用和解复用窄带FDM信号的数字信号处理装置具有与第一块粗处理级（16,17）串联连接的第一块精细处理级（11），并且与第二块精细处理级（11a），其串联连接到第二块粗加工台（16,17）。两级11和11a在远离两个粗加工级（16,17）的一侧耦合在一起，以便在远离端口（14）的一侧提供第一端口（14）和级（16和17）提供多个端口（15）。每个级（11,11a）是FIR低通滤波器，并且每个级（16,17）包括与快速傅立叶变换单元（17）相关联的多相滤波器（16）。

2. 发明公开

EP0695054A3 Frequency multiplexing using polyphase filters and fast fourier transforms 失效
标题翻译：多相滤波器和快速傅立叶变换的频装置
公开(公告)号：EP0695054A3
公开(公告)日：1999-12-08
申请号：EP95305004.4
申请日：1995-07-17
申请人： MMS SPACE SYSTEMS LIMITED
发明人： Wishart, Alexander Walker , Cornfield, Paul Simon
IPC分类号： H04L5/06
CPC分类号： H04J1/05
摘要： A digital signal processing apparatus for frequency multiplexing and demultiplexing of narrow band FDM signals has a first block fine processing stage (11) connected in series to a first block coarse processing stage (16, 17) and in parallel therewith a second block fine processing stage (11a) connected in series to a second block coarse processing stage (16, 17). The two stages 11 and 11a are coupled together at one side remote from the two coarse processing stages (16, 17) to provide a first port (14) and the stages (16 and 17) at the side remote from the port (14) provide a plurality of ports (15). Each stage (11, 11a) is a FIR lowpass filter and each stage (16, 17) incorporates a polyphase filter (16) in connection with a Fast Fourier Transform Unit (17).

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