发明名称 |
FDMA/TDMA TRANSCEIVER EMPLOYING COMMON SIGNAL PROCESSING |
摘要 |
A FDMA/TDMA or TDCDMA modulated signal is received through an antenna (10, FIG. 1) and down converted through a down converter (20). The signal is converted to a digital format and through an analog to digital converter (30). The digital representation of the modulated signal is filtered and decimated by way of a polyphase filter (40). The decimated representations of TDCDMA modulated signals from the polyphase filter (40) are correlated with the appropriate pseudonoise code, while decimated FDMA/TDMA modulated signals are correlated frequency information corresponding to the center of the appropriate FDMA/TDMA channel. For transmission of FDMA/TDMA or TDCDMA baseband information signals, the signals are output from a communications processor (FIG. 2, 190), input to a transform (150) and interpolated using an inverse polyphase filter (140). The resulting modulated baseband information signals are input to a digital to analog converter (130), upconverted through up converter (120) , and transmitted.
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申请公布号 |
WO0059169(A1) |
申请公布日期 |
2000.10.05 |
申请号 |
WO2000US06291 |
申请日期 |
2000.03.10 |
申请人 |
MOTOROLA INC. |
发明人 |
STARTUP, JAMES, WILLIAM;HELM, JIM, E.;GROSS, JONATHAN, H. |
分类号 |
H04J4/00;H04J13/00;H04L27/00;(IPC1-7):H04L27/00 |
主分类号 |
H04J4/00 |
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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