The invention provides a method for detecting uplink synchronization signals transmitted by a base station to a user terminal (UE) in a TD SCDMA mobile communication system. In a multi cell environment, because the distance between the base station (Node, B) will interfere with the existence of distal frequency neighboring cell or uplink time slot GP downlink time slot and UpPTS time slot end, the interference is large, the base station (Node B) will not be able to correctly detect UpPCH send information UE. In order to overcome the interference problem, Chinese Communication Standardization Organization (CCSA) and 3GPP in the relevant standards efforts, but as the communication environment is more and more complex, UpPCH interference is still unable to avoid. Aiming at the above problems, the invention discloses a method for improving the uplink pilot channel detection method, characterized in that, firstly, in the District of SYNC UL code to calculate the value of the normalized correlation power of the received signal by correspondence, followed by the normalized correlation value to determine the peak power and the corresponding time, at the end of the uplink belonging to different SYNC UL code the pilot channel activation judgment. After simulation and test, this method can better solve the influence of the interference on uplink synchronization.
【技术实现步骤摘要】
【技术保护点】
一种上行同步方法，其特征在于，包含以下步骤： 步骤１：用本小区的上行导频码（ＳＹＮＣ－ＵＬ）对接收信号计算归一化相关功率值，该步骤１包含： １．１接收从保护时隙（ＧＰ）起始时刻＋ｎ↓［ＵｐＰＣＨＳｈｉｆｔ］开始的Ｌ个码片（ｃｈｉ ｐ）数据，形成一个码片数据列，这里Ｌ是所述码片数据列的长度，扩展所述码片数据列前３２个码片（ｃｈｉｐ）和其后９５个码片（ｃｈｉｐ），用０填充，得到Ｌ＋１２７长数据ｒ↓［ｉ］，ｉ＝１～Ｌ＋１２７，这里ｉ是码片序号； １．２用本小区的８个 上行导频码（ＳＹＮＣ－ＵＬ）分别对ｒ↓［ｉ］进行滑动求相关，得到 ｃ↓［ｎ，ｉ］＝...
【技术特征摘要】
【专利技术属性】
技术研发人员：戎波，孙飞雪，
申请(专利权)人：杰脉通信技术上海有限公司，晨星半导体股份有限公司，
类型：发明
国别省市：31[中国|上海]
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