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Simulation Research on Coverage and Capacity in cdma2000 1x EV-DO Network

Author: ZhaoWenBo
Tutor: DengPing
School: Southwest Jiaotong University
Course: Communication and Information System
Keywords: EV-DO Link budget Cover Capacity Scheduling algorithm
CLC: TN929.533
Type: Master's thesis
Year: 2008
Downloads: 222
Quote: 0
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Abstract


With the 3G mobile communications business is booming , as the 3G family of CDMA2000 1x EV - DO ( referred to as EV - DO ) systems in the world has also been widely used. In network planning , the distribution of base stations and the base station coverage and capacity of the base station has an important relationship . 3G in China is about to enter the large-scale commercial stage , EV-DO coverage and capacity problems have important practical significance . EV-DO is a technique used for data services , there are a variety of service rate forward link and reverse link . This article discusses the general process for coverage estimates , analysis of the various factors that affect the EV-DO link budget . Propagation model gives different wireless environment EV-DO coverage radius , and simulate a forward link rate of grade distribution model . EV-DO reverse link code division multiple access , is a self- jamming system . When the number of users reaches a certain number of simultaneous calls , multiple access interference up to a certain limit , the system will not work . This paper analyzes the impact of reverse capacity factors deduced on the basis of the the reverse limits of capacity formula , the impact of various factors on the reverse capacity in the Matlab simulation platform for the simulation analysis . EV-DO forward link using time division multiple access technology to support higher rates . In a real environment due to the pre-impact to a lot of capacity factors , the actual peak rate of less than . This article discusses the principles of several existing scheduling algorithms to analyze the impact on system throughput and fairness factors , focus on the proportional fair scheduling algorithm , and on this basis, an improved scheduling algorithm . Matlab simulation platform simulation show that , compared to the same proportional fair scheduling algorithm , the scheduling algorithm can better improve the fairness forward link throughput .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Wireless communications > Mobile Communications > Cellular mobile communications systems (mobile phones, mobile phone handsets ) > Code Division Multiple Access (CDMA) mobile communication
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