发明名称 |
Narrowband/wideband packet data communication system |
摘要 |
The best features of narrowband and wideband signaling are merged to provide a simple and reliable multiple-access network. This is done by transmitting the header of the packet using narrowband signaling coupled with an associated channel access protocol such as carrier-sense multiple-access. The data portion of the packet is then sent as a spread-spectrum signal with a spreading sequence that is common to all nodes in the network. The narrowband headers allow easy monitoring of channel loading and busy nodes while acting as a synchronization aid to the wideband signal. The multiple-access capability of spread-spectrum signaling increases channel throughput dramatically over a conventional narrowband-only system, and the anti-multipath feature allows increased data transmission rates on a multipath-prone channel. Common spreading sequences simplify transceiver design and allow packet broadcasting on the network.
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申请公布号 |
US5022046(A) |
申请公布日期 |
1991.06.04 |
申请号 |
US19890338908 |
申请日期 |
1989.04.14 |
申请人 |
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE AIR FORCE |
发明人 |
MORROW, JR., ROBERT K. |
分类号 |
H04J13/00;H04J13/02;H04L12/56 |
主分类号 |
H04J13/00 |
代理机构 |
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