发明名称 |
Scalable QAM system and method |
摘要 |
A scalable QAM system and communication method. High-level QAM signals are broadcast from a transmitter. The transmitter comprises a scalable frame structure in a MAC layer and a bitmap method in a physical layer transmitting modulated signals with data distributed in different bit positions. Each client determines whether to demodulate all the received data on the bit plane or only a portion of the data in certain bit positions according to the transmission quality (SNR) of the received signal, in order to acquire a lower bit error rate and improve the efficiency of the transmission bandwidth.
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申请公布号 |
US7471640(B2) |
申请公布日期 |
2008.12.30 |
申请号 |
US20030748031 |
申请日期 |
2003.12.31 |
申请人 |
INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE |
发明人 |
HUANG CHENG-YI;LIN DAVID W.;FAN CHIH PENG |
分类号 |
H04J1/16;H04J3/00;H04J3/16;H04J3/24;H04L1/00;H04L23/02;H04L27/34;H04L27/36 |
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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