Using Decision to Suppress MAI of Downlink Positioning Signal in CDMA Mobile Communications Systems

HUA Yun; GONG Yao-huan; HE Fang

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Using Decision to Suppress MAI of Downlink Positioning Signal in CDMA Mobile Communications Systems

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- Using Decision to Suppress MAI of Downlink Positioning Signal in CDMA Mobile Communications Systems
- Acta Electronica Sinica Vol. 31, Issue 10, Pages: 1456-1460(2003)
- 作者机构：
  
  电子科技大学电子工程学院,四川,成都,610054
- 作者简介：
- 基金信息：
- DOI：
  CLC： 1N929.533
- Published Online：25 October 2003，
  
  Published：2003
- 稿件说明：
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HUA Yun, GONG Yao-huan, HE Fang. Using Decision to Suppress MAI of Downlink Positioning Signal in CDMA Mobile Communications Systems[J]. Acta Electronica Sinica, 2003, 31(10): 1456-1460.
DOI：

HUA Yun, GONG Yao-huan, HE Fang. Using Decision to Suppress MAI of Downlink Positioning Signal in CDMA Mobile Communications Systems[J]. Acta Electronica Sinica, 2003, 31(10): 1456-1460. DOI：

摘要

本文深入分析了CDMA系统中利用下行链路信号进行移动台定位存在的多址干扰(MAI)问题.通过数学推导提出了一种判决算法

该算法可以计算出信号到达时间(ToA)估计的准确程度

去除不可靠的测量结果

提高定位精度.算法实现简单

仿真结果表明

该算法可以大幅度提高定位精度.

Abstract

In this paper we first analyzed the effect of MAI in CDMA mobile communication when using downlink signal to position mobile station

and then proposed an algorithm through mathematical derivation.Using this algorithm we can calculate the reliability of the estimation of Time of Arrive of downlink signal

get rid of the result that is not reliable

and improve the veracity of location estimation.The algorithm is very simple .Simulation results demonstrate that the proposed algorithm can reduce error of location estimation very greatly.

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