发明名称 |
Method and systems for simultaneously broadcasting and receiving digital and analog signals |
摘要 |
Apparatus and method for transmitting a digitized wideband signal robust to multipath degradation and intersymbol interference within a predetermined broadcast band. A basis set of wideband mutually orthogonal pseudorandom basis signal waveforms of substantially equal length and having predetermined autocorrelation values and a predetermined spectral shape are generated. The length of the waveforms in the set represents a baud. The wideband waveforms of the basis set are data modulated so as to define digital data. The basis set substantially maintains the predetermined spectral shape during the modulation. |
申请公布号 |
ZA9505666(B) |
申请公布日期 |
1997.01.07 |
申请号 |
ZA19950005666 |
申请日期 |
1995.07.07 |
申请人 |
USA DIGITAL RADIO PARTNERS L.P., A LEGAL BODY ORGANISED AND EXISTING UNDER THE LAWS OF THE USA |
发明人 |
BILLIE J. HUNSINGER;DEREK D. KUMAR |
分类号 |
H04B1/40;H04B1/707;H04H20/30;H04H20/33;H04J9/00;H04J11/00;H04J13/00;H04J13/12;H04L5/02;H04L27/26 |
主分类号 |
H04B1/40 |
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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