发明名称 |
DIGITAL TRANSMISSION SYSTEM |
摘要 |
An orthogonal frequency division multiplex (OFDM) transmission system, e.g. for transmitting data traffic over a telephone subscriber twisted pair loop, includes a transmitter for generating sets of time division samples in respective channels corresponding to an input data sequence comprising a series of bits, and a receiver coupled to the transmitter via the transmission path. The receiver incorporates a time variant digital filter having a plurality of elements one for each said channel, and Fourier transform means for recovering the data stream from the outputs of said filter elements. The time variant digital filter comprises a set of wavelet filters one for each transmission channel and whose tap weights are determined so as to provide specific interference rejection. |
申请公布号 |
CA2211215(A1) |
申请公布日期 |
1997.02.27 |
申请号 |
CA19962211215 |
申请日期 |
1996.08.16 |
申请人 |
NORTHERN TELECOM LIMITED |
发明人 |
HUMPHREY, LESLIE DEREK;TATE, CHRISTOPHER |
分类号 |
H04J11/00;H04L27/00;H04L27/26;(IPC1-7):H04J11/00;H04L1/00;H04M11/06 |
主分类号 |
H04J11/00 |
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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