error spread

Then the key technologies of air interface are put forward, including the direct sequence spread spectrum, full-duplex, time-division multiple access, code-division multiple access, error control, mobility management and data communication protocol.

然后分析了无线数据平台使用的技术：直接序列扩频、全双工、时分复用多址、码分复用多址、差错控制、移动性管理、数据通信协议；

A novel localization algorithm based on the localizable corroborative body is proposed in this thesis. The advantage of this strategy is that the localization information of the multi-hop beacons can be utilized as well as spread and accumulation of localization error are avoided.

这种基于协作模式的定位策略的主要优点在于充分利用了多跳导标节点的位置信息，同时还可有效避免了定位误差在网络中恶性传播和积累。

In this paper, the multiple access performances of spread spectrum with chaotic sequence and that with pseudo-random sequence, pseudo-( chaotic) time hopping and conventional time hopping are compared, in terms of theoretical analysis of bit error rate, simulation results and the receiver.

从误码率理论分析、性能仿真和接收机结构等几个方面对混沌序列扩频与伪随机序列扩频、伪混沌跳时与传统跳时多址接入方式进行比较研究。

Spread error of Loran-C electric wave in the land route play's an important part of error source in Loran navigation system and Beidou/ Loran-c integrated navigation system, it seriously affects the positioning precision of the loran system.

罗兰-C电波在陆地路径上的传播误差是罗兰导航系统及北斗/罗兰组合导航系统中重要误差源，严重影响系统的导航定位精度。

2,4,6 respectively, spread path simulation, the results obtained, with the path of the increase in the number of symbol error rate reduced.

分别设定2、4、6条传播路径仿真，从仿真结果分析，随着路径数量的增加误符号率减小。