发明名称 |
Systems and method for orthogonal frequency divisional multiplexing |
摘要 |
Systems and methods for orthogonal frequency division multiplexing are provided. In one embodiment, a multi-carrier modem comprising: a receiver configured to de-modulate symbols from at least one of a plurality of spectrally overlapping carrier signals; a transmitter configured to modulate symbols onto at least one of a plurality of the spectrally overlapping carrier signals; a processor coupled to the transmitter, wherein the processor outputs data for transmission by the transmitter, wherein the processor applies an inverse Fourier transform to the data transmitted by the transmitter; and a controller programmed to instruct the transmitter to transmit a coarse timing adjustment followed by at least one secondary timing adjustment, wherein the secondary timing adjustment is a fine tuning adjustment with respect to the coarse timing adjustment.
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申请公布号 |
US7957265(B2) |
申请公布日期 |
2011.06.07 |
申请号 |
US20070927460 |
申请日期 |
2007.10.29 |
申请人 |
ADC TELECOMMUNICATIONS, INC. |
发明人 |
GEILE MICHAEL J.;BREDE JEFFREY |
分类号 |
H04J1/16;G06F17/14;H04B10/272;H04H20/69;H04H20/77;H04H20/78;H04H20/79;H04H20/80;H04H60/86;H04H60/96;H04H60/97;H04J3/14;H04J14/02;H04L1/00;H04L1/24;H04L5/02;H04L5/14;H04L12/10;H04L12/12;H04L12/24;H04L12/26;H04L12/28;H04L12/44;H04L25/03;H04L27/00;H04L27/26;H04L27/34;H04M7/00;H04M9/02;H04N7/173;H04N7/22;H04N7/24 |
主分类号 |
H04J1/16 |
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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