发明名称 |
Methods and apparatus for detecting cellular digital packet data (cdpd) |
摘要 |
Disclosed herein are methods and apparatus for detecting the presence of a CDPD carrier in a channel of a cellular system (although the invention is broadly applicable to detecting a specific kind of carrier associated with an "overlay" system, wherein an "overlay" system is one that shares the frequency allocation of another system on a non-cooperating basis). This specification describes a spectral estimation technique for detection of a CDPD carrier. In addition, this specification describes an MMSE (minimum mean-squared error) method that improves on the spectral estimation method. |
申请公布号 |
AU7728094(A) |
申请公布日期 |
1995.04.03 |
申请号 |
AU19940077280 |
申请日期 |
1994.09.14 |
申请人 |
PACIFIC COMMUNICATION SCIENCES, INC. |
发明人 |
GEORGE PEPONIDES;KUMAR BALACHANDRAN;FRANK QUICK;KEITH SMITH |
分类号 |
G10L11/02;H04B17/00;H04L12/56;H04L27/00;H04L27/18;H04W48/18 |
主分类号 |
G10L11/02 |
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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