发明名称 |
METHOD FOR COMPUTING LOG-LIKELIHOOD RATIOS FOR CODED QUADRATURE MODULATED SIGNALS |
摘要 |
<p>According to an embodiment of the invention, a method and system is disclosed for determining log-likelihood ratios for a coded set of individual bits (40) of a quadrature amplitude modulation (QAM) codeword. In the method at most two constant values (33,35) may be determined to perform a set of predetermined functions, the output of each of function is based on the constant values and at least one received component corresponding to the codeword, to determine log-likelihood ratios (37) for each individual bit of the set of individual bits of the codeword. The QAM codeword may correspond to at least a portion of a signal of a wireless device, such as a mobile third-generation device operating according to a Wideband Code-Division Multiple Access (WCDMA) standard.</p> |
申请公布号 |
EP1807988(A2) |
申请公布日期 |
2007.07.18 |
申请号 |
EP20050791641 |
申请日期 |
2005.10.11 |
申请人 |
ICERA INC. |
发明人 |
ALLPRESS, STEPHEN ALAN;FELIX, STEPHEN;LUSCHI, CARLO |
分类号 |
H04L1/00;H04L25/03;H04L25/06;H04L27/34;H04L27/38 |
主分类号 |
H04L1/00 |
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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