中国移动业务支撑系统发展分析

介绍了全业务及3G业务对中国移动业务支撑系统的影响,总结出BSS在支撑全业务运营过程中存在的主要共性问题,指出了BSS需要快速提升的几项关键能力的意见.     

基于Fast-ICA同、异步系统短码CDMA信号扩频序列与信息序列盲估计

本文通过分析短码CDMA信号特性,将接收信号以间隔2倍扩频周期、重叠1倍扩频周期的时间窗进行分割,建模CDMA系统与线性混合的盲源分离模型一致,使建立的CDMA模型同时适用于同、异步系统.利用盲源分离方法,实现了同步系统、异步系统失步时间未知和已知条件下,各用户等功率或非等功率时,扩频序列与信息序列的盲估计.理论分析和...     

盲分离在MIMO中的应用

多输入多输出MIMO(Multiple-input Multiple-output)技术能够在不占用额外频谱带宽的前提下,有效地提高信道容量和频谱利用率,空时编码STC(Space Time Coding)是MIMO的核心技术。盲源分离BSS(Blind Source Separation)是指在源信号、传输通道特性未知的情况下,仅由观测信号和源信号的一些先验知识估计出源信号各个分量的过程。提出了一种用盲源分离技术来改善MIMO接收性能的方案,通过仿真表明相比原先单一的MIMO模型,这种方案能有效地降低误码率,使系统可靠性得到提高,理论和仿真均表明此方案是可行的。     

3G业务支撑系统体系演进的探讨

3G时代即将来临,3G带来的不仅是网络技术的变化,而且对业务支撑系统也提出了新的要求.本文阐述了3G业务的特点,并以此分析业务支撑系统的改造要求.建设3G业务支撑系统不是要推倒原有的系统,而是在原有系统上平滑演进.根据业务支撑系统的改造要求,本文讨论了3G业务支撑系统如何演进.     

OSS/BSS的应用集成

本文首先介绍了应用集成在OSS/BSS建设中的意义,然后说明当前OSS/BSS系统结构的原则和特点,最后讨论了应用集成的实施及相关技术.     

Blind source separation with nonlinear autocorrelation and non-Gaussianity

Blind source separation (BSS) is a problem that is often encountered in many applications, such as biomedical signal processing and analysis, speech and image processing, wireless telecommunication systems, data mining, sonar, radar enhancement, etc. One often solves the BSS problem by using the statistical properties of original sources, e.g., non-Gaussianity or time-structure information. Nevertheless, real-life mixtures are likely to contain both non-Gaussianity and time-structure information sources, rendering the algorithms using only one statistical property fail. In this paper, we address the BSS problem when source signals have non-Gaussianity and temporal structure with nonlinear autocorrelation. Based on the two statistical characteristics of sources, we develop an objective function. Maximizing the objective function, we propose a gradient ascent source separation algorithm. Furthermore, We give some mathematical properties for the algorithm. Computer simulations for sources with square temporal autocorrelation and non-Gaussianity illustrate the efficiency of the proposed approach.     

综合业务激活平台USAP

首先论述了在电信应用系统集中化建设的背景下，业务开通的现状、机遇与挑战；接着阐述建设综合业务激活系统平台的重要意义；最后介绍了大唐电信综合业务激活解决方案的体系结构以及系统特点。     

一种基于峰度的盲源分离算法研究

盲源分离(BSS)问题是在缺少先验知识的情况下，从接收到的观测信号中恢复统计独立的源信号。独立分量分析(ICA)方法把多维随机矢量转换为尽可能统计独立的分量，是现代解决盲源分离问题最主要的方法之一。本文给出了一种基于峰度的盲源分离算法，与用Comon的方法求解Givens矩阵相比，结构清晰、实现简单，而且几乎没有对源信号的概率密度函数做任何假设，可以对几乎所有概率密度的源信号进行分离，还借鉴了Comon的成对处理原则，把算法推广到了解决一般的盲源分离问题。仿真证明了该算法的有效性。     

A Systolic Architecture and Implementation of Feedback Network for Blind Source Separation

Blind source separation of independent sources from their convolutive mixtures is a problem in many real-world multi-sensor applications. However, the existing BSS architectures are more often than not based upon software and thus not suitable for direct implementation on hardware. The existing software of feedback network algorithm is not suitable for real-time implementations. In this paper, we present a parallel algorithm and architecture for hardware implementation of blind source separation. The algorithm is based on feedback network and is highly suited for parallel processing. The implementation is designed to operate in real time for speech signal sequences. It is systolic and easily scalable by simple adding and connecting chips or modules. In order to verify the proposed architecture, we have also designed and implemented it in a hardware prototyping with Xilinx FPGAs running at 33 MHz.

电信支撑系统BSS与OSS流程集成设计

本文简要描述了电信支撑系统BSS与OSS的整合目标架构,讨论了BSS与OSS衔接的主要内容,最后提出了采用BPM＋Workflow的两级流程架构实现流程集成的设计方案。