发明名称 |
SYSTEM AND METHOD PERFORMING QUADRATURE AMPLITUDE MODULATION BY COMBINING CO-SETS AND STRONGLY CODED CO-SET IDENTIFIERS |
摘要 |
A method of encoding a stream of data elements is provided which involves splitting the stream of data elements into a first stream and a second stream; encoding the first stream to produce a first encoded stream; performing a constellation mapping using a combination of the first encoded stream and a third stream which is based on the second stream. This may involve involves defining a signal constellation; defining a plurality of co-sets within the constellation such that a minimum distance between constellation points within each co-set is larger than a minimum distance between any constellation points within the signal constellation; performing said constellation mapping by using the first encoded stream to identify a sequence of co-sets of said plurality of co-sets, and by using the third stream to identify a sequence of constellation points within respective co-sets of the sequence of co-sets identified by said first encoded stream. |
申请公布号 |
WO03019792(A1) |
申请公布日期 |
2003.03.06 |
申请号 |
WO2002CA01296 |
申请日期 |
2002.08.23 |
申请人 |
NORTEL NETWORKS LIMITED |
发明人 |
TONG, WEN;KHANDANI, AMIR |
分类号 |
H03M13/25;H03M13/29;H04L1/00;H04L25/03;H04L27/26;H04L27/34;H04L27/36;(IPC1-7):H03M13/35;H04L27/18 |
主分类号 |
H03M13/25 |
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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