公开(公告)号：US07310369B1

公开(公告)日：2007-12-18

申请号：US09870926

申请日：2001-05-30

申请人： Abraham Krieger ,  Ramaswamy Murali ,  Donald Brian Eidson ,  Sachar Kons

发明人： Abraham Krieger ,  Ramaswamy Murali ,  Donald Brian Eidson ,  Sachar Kons

IPC分类号： H03D3/18 ,  H03D3/24

CPC分类号： H04L1/20 ,  H04B17/26 ,  H04B17/336 ,  H04L1/0054 ,  H04L1/0055

摘要： A method for estimating an SNR-related parameter, such as ES/N0, from one or more symbols. The number of symbols within a predetermined number of symbols that fall within one or more collection areas is counted. The count is then associated with a value of the SNR-related parameter. This association may be performed through one or more lookup tables. In one application, a scaling factor is derived from the count. The scaling factor may be used to scale symbols before they are quantized and inputted into a trellis decoder such as a log-MAP decoder.

摘要翻译： 一种用于从一个或多个符号估计SNR相关参数的方法，例如E / S / N 0 0。 计数落入一个或多个收集区域内的预定数量的符号内的符号数。 然后计数与SNR相关参数的值相关联。 该关联可以通过一个或多个查找表来执行。 在一个应用中，从计数导出缩放因子。 比例因子可以在量化之前对符号进行缩放并输入到诸如log-MAP解码器的网格解码器中。