专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

WO2009097732A1 高速下行分组接入的调制方式的指示方法及判断方法审中-公开
公开(公告)号：WO2009097732A1
公开(公告)日：2009-08-13
申请号：PCT/CN2008/073768
申请日：2008-12-26
申请人：中兴通讯股份有限公司 , 赵静 , 陈慧 , 马志锋 , 黄河 , 陈冠
发明人：赵静 , 陈慧 , 马志锋 , 黄河 , 陈冠
IPC分类号： H04L1/00
CPC分类号： H04L1/0028 , H04L1/0003

2. 发明申请

WO2008014631A1 一种CDMA下行接收信号的解调方法审中-公开
公开(公告)号：WO2008014631A1
公开(公告)日：2008-02-07
申请号：PCT/CN2006/001493
申请日：2006-06-29
申请人：中兴通讯股份有限公司 , 陈冠
发明人：陈冠
IPC分类号： H04J13/02 , H04B1/707
CPC分类号： H04B1/711
摘要： A demodulation method for downlink received signal in CDMA, including the following steps: multipath searching the received baseband digital I/Q signal, channel estimating the searched L pieces of effective multipath to obtain the column vector of the channel estimation value (110); the 3 pieces of paths respectively called a strong-path, a week-path, a dummy-path which the weak-path is related to the strong-path are assigned (120), if L is equal to 2 and the Signal-To-Noise ratio is larger than the threshold predetermined; multipath de-scrambling and despreading the paths assigned to obtain a despreading column vector for a target symbol (130); one of the interfering item of the strong-path is replaced by the dispreading result multiplied by a coefficient, so that the despreading result of the strong-path updated is obtained (140); the old despreading result is replaced by the strong-path despreading result updated for maximal ratio combining to obtain demodulated target symbol (150). The present method operates simply and can achieve better performance than Rake receiver, when the number of paths is 2 and the Signal-To-Noise ratio is relatively large, and the interference in cellular presents on main situation.

3. 发明申请

WO2008011745A1 CDMA下行接收信号的解调方法及其多径分配的优化方法审中-公开
公开(公告)号：WO2008011745A1
公开(公告)日：2008-01-31
申请号：PCT/CN2006/001423
申请日：2006-06-22
申请人：中兴通讯股份有限公司 , 陈冠 , 刁心玺
发明人：陈冠 , 刁心玺
IPC分类号： H04J13/00
CPC分类号： H04B1/711 , H04B1/7117 , H04B1/712
摘要：一种CDMA下行接收信号的解调方法及其多径分配的优化方法，先利用基带数字信号搜索出L个有效多径，对其进行信道估计，得到信道估计值列向量；进行多径分配时，如可分配的多径解扩资源M L，先将多径解扩资源分配给有效多径L，剩下的M-L个多径解扩资源则优先分配给信噪比最高的有效多径之间所分配的虚径；对分配得到的径进行多径的解扰解扩，得到对于目标符号的解扩列向量；计算出干扰相关矩阵，根据该干扰相关矩阵和信道估计值列向量计算多径合并权重，最后计算出解调的目标符号。本发明在多径解扩径数受限的情况下，实现了多径分配的最优配置。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式