发明名称 |
Scalable communication system using overlaid signals and multi-carrier frequency communication |
摘要 |
A communication system such as an OFDM or DMT system has nodes which are allowed to transmit continuously on one or just a few of the sysiem's frequency sub-channels, while the other nodes avoid putting any signal into those sub-channels. Simple low data rate nodes are allowed to use a small number of sub-channels while more complicated nodes use the remainder, and preferably functionality is provided to ensure that adjacent sub-channels are reliably spaced apart in frequency so that they do not bleed over into one another; to ensure that signals from all nodes arrive at the base station with well-aligned symbol transitions; and to ensure that signals from the various nodes arrive at the base station with similar power levels.
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申请公布号 |
US6628673(B1) |
申请公布日期 |
2003.09.30 |
申请号 |
US19990474602 |
申请日期 |
1999.12.29 |
申请人 |
ATHEROS COMMUNICATIONS, INC. |
发明人 |
MCFARLAND WILLIAM;MENG TERESA H. |
分类号 |
H04L5/02;H04L27/26;(IPC1-7):H04J1/00 |
主分类号 |
H04L5/02 |
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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