专利检索 ap:("Gregory Agami" OR "Robert J Corke" OR "Daniel G Prysby" OR "Stefan Paun") AND inv:"Robert J Corke" 第 1 页

1.

发明授权
Data transmission and reception within a spread-spectrum communication system 有权

公开(公告)号：US07068701B2

公开(公告)日：2006-06-27

申请号：US09867236

申请日：2001-05-29

申请人： Gregory Agami , Robert J Corke , Daniel G Prysby , Stefan Paun

发明人： Gregory Agami , Robert J Corke , Daniel G Prysby , Stefan Paun

IPC分类号： H04B1/69 , H04K1/00

CPC分类号： H04J13/10 , H04L25/03866 , H04L27/34

摘要： A long code scrambler has been provided to scramble the data bits prior to QAM mapping. Different data rates are accommodated by using different long code m-tuples sampled at the modulation symbol rate, where m equals 2, 4 or 6 for 4, 16 or 64 QAM, respectively. In order to support 1XEV-DV users employing multiple Walsh code channels, a long code 6-tuple sample is permutated, to further randomize the QAM symbols. As appropriate for the modulation order, 2, 4 or 6 bits of the permutated 6-tuple are applied to the data sequence. That is, in addition to randomizing the modulation symbols for a given code channel, each code channel will likely have unique QAM symbols at any given symbol time.