发明名称 |
FILTER FOR IMPULSE RESPONSE SHORTENING, WITH ADDITION SPECTRAL CONSTRAINTS, FOR MULTICARRIER TRANSMISSION |
摘要 |
A channel in a multiple carrier communication system is equalized by computing a desired spectral response, shortening the impulse response of the channel so that a significant part of an energy of the impulse response is confined to a region that is shorter than a target length and filtering the signal based on the desired spectral response. A multiple carrier communication system may include a primary impulse shortening filter that receives an output signal of an analog to digital converter and accepts coefficients. A secondary impulse shortening filter may receive the output signal of the analog to digital converter, output an output signal, and pass coefficients to the primary impulse shortening filter. A reference signal generator may output a reference signal. A comparator may compare the output signal and the reference signal and output a resulting error signal. An adaptive processor may compute coefficients for the secondary impulse shortening filter based on the error signal.
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申请公布号 |
CA2599598(C) |
申请公布日期 |
2010.12.07 |
申请号 |
CA19992599598 |
申请日期 |
1999.04.05 |
申请人 |
TELLABS OPERATIONS, INC. |
发明人 |
HARIKUMAR, GOPAL;MARCHOK, DANIEL;RUDOFSKI, KENNETH J. |
分类号 |
H04L27/26;H03H17/02;H04B1/10;H04B15/00;H04L25/03 |
主分类号 |
H04L27/26 |
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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