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2016 2nd International Conference on Wireless and Telematics (ICWT)最新文献

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Performance of AODV and OLSR routing protocol in a hybrid sensor and vehicular network 802.11p AODV和OLSR路由协议在混合传感器和车载网络802.11p中的性能
Pub Date : 2016-08-01 DOI: 10.1109/ICWT.2016.7870868
Mohammed A. M. Al-Tahrawi, M. Ismail, R. Nordin, T. Yuwono
Hybrid sensor and vehicular network (HSVAN) is a new and inexpensive technology that combines the features of wireless sensor network (WSN) with vehicular ad hoc network and (VANET). In HSVAN, sensor nodes' distribution is prearranged and deployed along with the roadsides and have centralized communication channel with sensor gateway that alert drivers from dangerous conditions. However, the network dynamic imposes new challenges that should be addressed regarding appropriate routing protocols that should be implemented to disseminate the data among the nodes. In this paper, the performance of AODV and OLSR routing protocols in HSVAN adopting IEEE 802.11b and IEEE 802.11p MAC standards was investigated. The simulation scenario represents a rural environment with six nodes and one WSN gateway using the NS-3 and SUMO simulator. Simulation result shown that IEEE 802.11p achieved 9% throughput gain over IEEE 802.11b as a MAC protocol. Moreover, the AODV routing protocol outperformed OLSR by 3%, 4%, and 55% in term of throughput, packet delivery ratio, and end to end delay respectively. However, the effect of mobility high data request not been considered to imitate the real HSVAN environment.
混合传感器与车联网(HSVAN)是一种将无线传感器网络(WSN)与车载自组织网络(VANET)相结合的新型廉价技术。在HSVAN中,传感器节点的分布沿着路边预先安排和部署,并具有与传感器网关的集中通信通道,提醒驾驶员注意危险情况。然而,网络动态带来了新的挑战,这些挑战应该在适当的路由协议方面得到解决,这些路由协议应该被实现,以便在节点之间传播数据。本文对采用IEEE 802.11b和IEEE 802.11p MAC标准的HSVAN中AODV和OLSR路由协议的性能进行了研究。模拟场景使用NS-3和相扑模拟器表示具有6个节点和1个WSN网关的农村环境。仿真结果表明,作为MAC协议,IEEE 802.11p比IEEE 802.11b实现了9%的吞吐量增益。此外,AODV路由协议在吞吐量、包投递率和端到端延迟方面分别比OLSR高3%、4%和55%。然而,在模拟真实的HSVAN环境时,没有考虑移动性对高数据请求的影响。
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引用次数: 2
A performance evaluation of SCA-FDMA implementation on LabVIEW platform LabVIEW平台上SCA-FDMA实现的性能评价
Pub Date : 2016-08-01 DOI: 10.1109/ICWT.2016.7870861
H. Setiawan, Farida Pratiwi, Dwi Ana Ratna Wati
This paper discusses about a modelling, implementation and performances evaluation of physical layer of single carrier frequency division multiple access (SC-FDMA). They are done on LabVIEW model-based platform. The SC-FDMA physical layer model consists of data generator, a constellation mapper/demapper, a pair of discrete Fourier transform and channel model. The simulations are performed based on the various of signal to noise ratio (SNR) and number of user in the AWGN and flat Raleigh fading channel models. The bit error rate (BER) performance 10-6 for a single user using QPSK constellation and AWGN channel model is achieved in SNR 4dB. This performance decreases 3dB for multipath channel model.
本文讨论了单载波频分多址(SC-FDMA)物理层的建模、实现和性能评价。它们是在基于LabVIEW模型的平台上完成的。SC-FDMA物理层模型由数据生成器、星座映射器/解析器、一对离散傅里叶变换和信道模型组成。基于AWGN和平面Raleigh衰落信道模型下信噪比(SNR)和用户数的变化进行了仿真。在信噪比为4dB的情况下,采用QPSK星座和AWGN信道模型实现了单用户误码率10-6的性能。对于多径信道模型,此性能降低3dB。
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引用次数: 0
Satellite deployment through two layer functions model to solve national supply and demand gap of capacity in indonesia 通过两层功能模型进行卫星部署,解决印尼全国容量供需缺口
Pub Date : 2016-08-01 DOI: 10.1109/ICWT.2016.7870846
Gerson Damanik, Iwan Setyawan, Daniel D. Kameo
Satellite is a a vital infrastructure for national security, national telecommunication infrastructure, broadcasting service, and earth observation purposes. Satellite pre-launching processes are the most and critical stages that should be government be involved significantly. Pre-launching stages are API/A process, Satellite Coordination process, Res 49 process, Notification process, and Satellite Launching process. Indonesian new government has a Nawacita program should be supported by national telecommunication infrastructure specially using satellite. Indonesian satellite market showed supply and demand gap condition, where the most of satellite usage was provided by foreign satellites. There were 34 for foreign satellites used in Indonesia that served by 15 countries. Currently, Indonesia used foreign satellite capacity is equal to 5 foreign satellites. In this paper, satellite deployment satellite model in Indonesia is developed by government investment budget that we called "layer one". The whole processes should follow Radio Regulations was setted up by ITU When "layer one" as a government function is completed and satellite capacity is ready be delivered to the users, then private companies, or government enterprises that already be selected by the government deliver that capacity. The selection of the operators could be through an auction, or others of selection method. The function of private company or government enterprises delivery satellite capacity or satellite service to their customers its called "layer two". Based on the result of interview be conducted, the problem with Indonesian satellite operators such as : lag of investment, inword looking orientation, and too many national satellite operators with minimum real satellite in operate.
卫星是国家安全、国家电信基础设施、广播服务和地球观测等重要基础设施。卫星发射前的过程是最关键的阶段,政府应该大力参与。发射前阶段是API/A过程、卫星协调过程、Res 49过程、通知过程和卫星发射过程。印尼新政府有一个纳瓦奇塔计划,应该由国家电信基础设施支持,特别是使用卫星。印度尼西亚卫星市场呈现供需缺口状况,大部分卫星使用由外国卫星提供。在印度尼西亚使用的外国卫星有34个,由15个国家提供服务。目前,印尼使用的外国卫星容量相当于5颗外国卫星。在本文中,印度尼西亚的卫星部署模型是由政府投资预算制定的,我们称之为“第一层”。整个过程应遵循国际电联制定的《无线电规则》。当“第一层”作为政府职能完成,卫星容量准备交付给用户时,然后由政府选择的私营公司或政府企业交付该容量。运营商的选择可以通过拍卖或其他选择方式进行。私营公司或政府企业向其客户提供卫星容量或卫星服务的功能称为“第二层”。根据访谈的结果,印尼卫星运营商存在的问题有:投资滞后,向内看的方向,国家卫星运营商太多,实际运行的卫星最少。
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引用次数: 1
DC backup power supply monitoring in substation based on wireless sensor network 基于无线传感器网络的变电站直流备用电源监控
Pub Date : 2016-08-01 DOI: 10.1109/ICWT.2016.7870860
Firdaus, Dies Okky Aditya, W. B. Pramono
DC system has an important role in the operation of the substation. It is used for the operating of protection relays, control (DC 110V and 220V) and operating of Scadatel (DC 48V). During this time in Kentungan Substation, controlling and monitoring of the batteries are still done manually in a certain time period. This research is to design a system of Wireless Sensor Network to monitor the batteries at substations in real time and automatically. Transmitter and receiver can work properly, which can communicate using zigbee communication with a range of ± 350 meters for outdoor LOS and ± 70 meters for indoor NLOS. System interface can perform properly, it is able to provide DC power supply state information and give warnings in case of overvoltage or overcurrent.
直流系统在变电站的运行中起着重要的作用。用于保护继电器的操作,控制(直流110V和220V)和Scadatel(直流48V)的操作。在此期间,在一定的时间段内,肯顿根变电站对电池的控制和监测仍然是人工完成的。本课题的研究是设计一个无线传感器网络系统,实现变电站电池的实时自动监测。收发工作正常,采用zigbee通信方式进行通信,室外LOS范围为±350米,室内NLOS范围为±70米。系统接口能够正常工作,能够提供直流电源状态信息,并在过压或过流时发出警告。
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引用次数: 4
Inter-cell interference coordination with soft frequency reuse method for LTE network 基于软频率复用的LTE网络小区间干扰协调
Pub Date : 2016-08-01 DOI: 10.1109/ICWT.2016.7870852
Iskandar, H. Nuraini
Due to the requirement of high capacity to access broadband service as well as high spectrum efficiency, the frequency reuse of one is targeted to be applied in LTE network planning. But it can lead to a worse inter-cell interference levels experienced especially by users located at the cell edge area. Soft Frequency Reuse (SFR) is considered as an effective frequency reuse scheme for inter-cell interference coordination to increase the spectrum efficiency. In this research, an LTE network will be planned at 1800 MHz using monte carlo computer simulation to examine the performance of SFR for LTE downlink transmission. We consider issues of different power ratio and various traffic loads. Both performance of cell edge users and overall cell performance are evaluated in terms of SINR, BLER, and throughput. The result of performance with SFR scheme will be compared againts the classical frequency reuse one and frequency reuse three scheme. The simulation result shows that SFR can improve the performance for the users at the cell edge. In general, SINR can be increased about four times compared with frequency reuse one and BLER can be improved up to 81,41%.
由于接入宽带业务需要高容量和高频谱效率,1的频率复用是LTE网络规划中有针对性的应用。但它会导致更严重的小区间干扰水平,尤其是位于小区边缘区域的用户。软频率复用(Soft Frequency Reuse, SFR)被认为是一种有效的小区间干扰协调频率复用方案,可提高频谱效率。在本研究中,将使用蒙特卡罗计算机模拟在1800mhz规划LTE网络,以检查LTE下行传输的SFR性能。我们考虑了不同功率比和不同流量负载的问题。蜂窝边缘用户的性能和总体蜂窝性能都是根据SINR、BLER和吞吐量进行评估的。将SFR方案的性能与经典的频率复用一种和频率复用三种方案进行比较。仿真结果表明,SFR可以提高小区边缘用户的性能。总的来说,与频率复用相比,SINR可提高约4倍,BLER可提高81.41%。
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引用次数: 9
Performance analysis of FMCW-based X-band weather radar 基于fmcw的x波段气象雷达性能分析
Pub Date : 2016-08-01 DOI: 10.1109/ICWT.2016.7870848
Kusmadi, A. Munir
In this paper, a performance analysis of weather radar system works on X-band frequency is approached using an EM & Circuit simulator. The radar which is designed using frequency modulated continuous wave (FMCW) technique is intended to operate at center frequency of 9GHz. The FMCW signal referred as chirp signal is generated using a direct digital synthesizer (DDS) with a bandwidth of 50MHz. By using double up-converter to reach the operating frequency, the signal is powered using 2Watt amplifier to be transmitted by the transmitter antenna. The reflected signal is then received by the receiver antenna to be further processed and analyzed. From the simulation results, it shows that the reflected signal has a delay time compared to the reference signal indicating the performance of FMCW radar weather to detect the object as far as 800 meters from the radar.
本文利用电磁电路模拟器对工作在x波段的气象雷达系统进行了性能分析。该雷达采用调频连续波(FMCW)技术设计,工作在9GHz的中心频率。FMCW信号称为啁啾信号,使用带宽为50MHz的直接数字合成器(DDS)产生。通过双上变频器达到工作频率,用2w放大器为信号供电,由发射机天线发射。反射信号随后被接收天线接收,进行进一步的处理和分析。仿真结果表明,反射信号相对于参考信号有一定的延迟时间,这表明FMCW雷达天气对距离雷达800米以内目标的探测性能。
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引用次数: 4
Sensing time-based throughput performance in OFDM cognitive radio system OFDM认知无线电系统中基于时间感知的吞吐量性能
Pub Date : 2016-08-01 DOI: 10.1109/ICWT.2016.7870858
N. Armi, Chaeriah. B.A.W, F. Y. Suratman, A. Wijaya
The required time for spectrum sensing is critical issue in cognitive radio (CR). Secondary User (SU) must sense license spectrum to seek opportunities as quick as possible. However, quick sensing decreases the fidelity of sensing outcome. Sensing time has a significant impact to the throughput performance. This paper studies the impact of sensing time to the throughput performance at low signal to noise ratio (SNR). The throughput is evaluated in idle and busy states with certain and uncertain noises. OFDM technique with 16 QAM is used as primary user (PU) signal. At low SNR with a certain probability of false alarm (Pf) target during 50 ms, the throughput performance is gradually increased. In case of idle state, throughput has better performance compared with busy state.
在认知无线电(CR)中,频谱感知所需的时间是一个关键问题。二级用户(Secondary User, SU)需要对license频谱进行感知,以便尽快寻找机会。然而,快速传感降低了传感结果的保真度。感知时间对吞吐量性能有重要影响。本文研究了低信噪比下感知时间对吞吐量性能的影响。在确定噪声和不确定噪声的情况下,对空闲和繁忙状态下的吞吐量进行了评估。采用16 QAM OFDM技术作为主用户(PU)信号。在低信噪比条件下,在50 ms内具有一定的虚警(Pf)目标概率时,吞吐量性能逐渐提高。在空闲状态下,吞吐量比繁忙状态有更好的性能。
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引用次数: 3
Adaptive FFT-based signal processing on FMCW weather radar 基于fft的FMCW天气雷达信号处理
Pub Date : 2016-08-01 DOI: 10.1109/ICWT.2016.7870841
A. Maurizka, Habibur Muhaimin, A. Munir
Weather radar is usually used to monitor the precipitation events in atmosphere by estimating reflectivity from received power signals on receiver. Since received signals are contaminated by noise, such techniques are developed to calculate reflectivity accurately. Signal processing on Doppler domain is one of Fast Fourier Transform (FFT)-based method that is usually used to calculate reflectivity. Another FFT-based method that can be used to estimate reflectivity is using spectrum estimation to substitute FFT, so that the processing can be done in time domain. However, spectrum estimation requires more concern on signal modelling and filter coefficients estimation. This research compares and analyzes the performance of FFT-based spectrum estimation with Doppler domain processing. The spectrum estimation methods are based on autoregressive (AR) parametric estimation and adaptive filtering that has been well known in another application. Raw voltages on receiver are processed to estimate reflectivity. Simulation done for FMCW radar with center frequency 9.475 GHz (X-band) and typically bandwith of 5 MHz. The simulation results show that time domain signal processing using adaptive filter gives more satisfying result com pared to parametric estimation.
气象雷达通常利用接收到的功率信号估计反射率来监测大气中的降水事件。由于接收到的信号受到噪声的污染,因此开发了这种技术来准确地计算反射率。多普勒域信号处理是一种基于快速傅里叶变换(FFT)的方法,通常用于计算反射率。另一种基于FFT的反射率估计方法是用频谱估计代替FFT,在时域内进行处理。然而,频谱估计需要更多地关注信号建模和滤波系数的估计。本研究比较分析了基于fft的频谱估计与多普勒域处理的性能。频谱估计方法是基于自回归(AR)参数估计和自适应滤波,这在另一个应用中是众所周知的。对接收器上的原始电压进行处理以估计反射率。对中心频率为9.475 GHz (x波段)、典型频带为5 MHz的FMCW雷达进行了仿真。仿真结果表明,与参数估计相比,采用自适应滤波对时域信号进行处理的结果更令人满意。
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引用次数: 5
Design and evaluation of network-based distributed mobility management solution based on PFMIPv6 基于PFMIPv6的网络分布式移动管理方案设计与评价
Pub Date : 2016-08-01 DOI: 10.1109/ICWT.2016.7870867
Mohammed Balfaqih, M. Ismail, R. Nordin, Zain A. Balfaqih, T. Yuwono
Proxy Mobile IPv6 (PMIPv6) protocol provides IP mobility support to a Mobile User (MU) once it performs a handover from an access router to another. Furthermore, Fast Handover for PMIPv6 (PFMIPv6) protocol has been standardized to improve the handover performance of PMIPv6 in terms of handover latency and packet loss. The limitation of these Centralized Mobility Management (CMM) protocols (e.g., non optimal routes, single point of failure and scalability) has led to the development of Distributed Mobility Management (DMM) paradigm. DMM aims to flat the network architecture by placing the anchor entity dynamically closer to the MU. The DMM solutions can be classified into: host-based DMM, in which MU participates in IP mobility process, and network-based DMM, where IP mobility process is done in the network side without MU involvement. However, existing network-based DMM proposals rely on PMIPv6 protocol which experience high handover latency and packet loss. Thus, we present the design and operation of a proposed network-based DMM solution based on PFMIPv6. We have developed an analytical model to evaluate and compare the handover latency and the packet loss of the proposed network-based DMM solution and IETF networkbased DMM proposal.
代理移动IPv6 (Proxy Mobile IPv6, PMIPv6)协议在移动用户(Mobile User, MU)从接入路由器切换到另一个路由器时,为其提供IP移动性支持。此外,为了从切换延迟和丢包方面提高PMIPv6的切换性能,PFMIPv6 (Fast switching for PMIPv6)协议被标准化。这些集中式移动管理(CMM)协议的局限性(例如,非最优路由,单点故障和可扩展性)导致了分布式移动管理(DMM)范式的发展。DMM的目标是通过将锚实体动态地放置在更靠近MU的地方,使网络体系结构扁平化。DMM解决方案分为基于主机的DMM (MU参与IP迁移过程)和基于网络的DMM (IP迁移过程在网络侧完成,MU不参与)。然而,现有的基于网络的DMM方案依赖于PMIPv6协议,该协议具有较高的切换延迟和丢包问题。因此,我们提出了一种基于PFMIPv6的基于网络的DMM解决方案的设计和运行。我们开发了一个分析模型来评估和比较基于网络的DMM方案和基于IETF网络的DMM方案的切换延迟和丢包。
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引用次数: 3
A simulation study of least-squares received beamforming on HAP frequency-selective channel HAP选频信道最小二乘接收波束形成的仿真研究
Pub Date : 2016-08-01 DOI: 10.1109/ICWT.2016.7870857
I. Zakia
This paper explores the impact of slightly frequencyselective Rician fading channel on the performance of leastsquares received beamforming. This channel type is encountered in the communications from high-altitude platform (HAP) to high-speed train (HST) in urban area and at Ka-band operating frequency. The system performance in terms of mean-square error (MSE) and bit error rate (BER) for different scenarios of Direction of Arrival (DOA) are evaluated by Monte Carlo simulation.
研究了微频率选择性衰落信道对最小二乘接收波束形成性能的影响。这种信道类型是在ka波段工作频率下,从城市高空平台(HAP)到高速列车(HST)的通信中遇到的。通过蒙特卡罗仿真,对不同到达方向(DOA)场景下的系统性能进行了均方误差(MSE)和误码率(BER)评估。
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引用次数: 1
期刊
2016 2nd International Conference on Wireless and Telematics (ICWT)
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