2011 International Conference on Devices and Communications (ICDeCom)最新文献_第8页

Performance Study of Discrete Wavelet Packet Based MB-OFDM System for Short Range Indoor Wireless Environment 基于离散小波包的MB-OFDM系统在近距离室内无线环境中的性能研究

2011 International Conference on Devices and Communications (ICDeCom) Pub Date : 2011-03-24 DOI: 10.1109/ICDECOM.2011.5738567

Dr. Bikramaditya Das, Suryakant Tiwari, Susmita Das

{"title":"Performance Study of Discrete Wavelet Packet Based MB-OFDM System for Short Range Indoor Wireless Environment","authors":"Dr. Bikramaditya Das, Suryakant Tiwari, Susmita Das","doi":"10.1109/ICDECOM.2011.5738567","DOIUrl":"https://doi.org/10.1109/ICDECOM.2011.5738567","url":null,"abstract":"Multiband Orthogonal Frequency Division Multiplexing (MB-OFDM) approach using UWB signals with short duration of pulses provide unique advantages in short-range high data rate wireless applications which include easy penetration through obstacles, high precision ranging and low processing power. A perfect reconstruction using discrete wavelet packet transmultiplexer in MB-OFDM transceiver counters the degrading effect of ISI, and also conserves bandwidth. In comparison to conventional FFT MB-OFDM, Discrete Wavelet Packet Modulation (DWPM) offers much lower side lobes in the transmitted signal, which reduces inter carrier interference (ICI) and narrowband interference (NBI). In this paper a detail study on conventional MB-OFDM and Discrete Wavelet Packet Transform (DWPT) MB-OFDM is attempted for high data rate ultra wideband (UWB) WPAN physical layer standard. Different multipath components in the UWB channels are characterized by different delays and attenuation. BER performances of MB-OFDM UWB on IEEE 802.15.3a channel models are investigated through simulation study. We show that, at low data rate (55 Mbps) the DWPT MB-OFDM system performs better in the CM4 channel environment than in the CM3 channel due to its inherent frequency diversity. In high data rate (480 Mbps), the BER performance in CM3 channel model is found to be better than in CM4 channel model. DWPT MB-OFDM outperforms than the conventional FFT MB-OFDM for high data rate applications.","PeriodicalId":290448,"journal":{"name":"2011 International Conference on Devices and Communications (ICDeCom)","volume":"139 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133339863","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

Characterization of Baseband Implementations Using Energy Efficiency Metric Based Quantification 利用基于能量效率度量的量化来表征基带实现

2011 International Conference on Devices and Communications (ICDeCom) Pub Date : 2011-03-24 DOI: 10.1109/ICDECOM.2011.5738464

H. K. Boyapati, R. Kumar, S. Chakrabarti

{"title":"Characterization of Baseband Implementations Using Energy Efficiency Metric Based Quantification","authors":"H. K. Boyapati, R. Kumar, S. Chakrabarti","doi":"10.1109/ICDECOM.2011.5738464","DOIUrl":"https://doi.org/10.1109/ICDECOM.2011.5738464","url":null,"abstract":"Energy consumption is an issue in general in information and communication technologies (ICT), but also cellular communications in particular. Base station sites are the main energy consumers in a mobile network. Their energy consumption significantly contributes to green house gas (Co2) emissions. It has been found that digital baseband is the main contributor to dynamic part of the power consumption in new base station deployments due to its explosive computational complexity. Hence, the implementations of baseband subsystem need to be energy efficient in advanced systems and thus to reduce Co2 foot print and save on energy costs. In this paper, we have presented an approach for evaluating energy efficiency metrics for any signal processing algorithm on TI's DSP and Xilinx FPGA. This evaluation of energy metrics is very much required to characterize the implementations and for quantifying the gains achieved from any energy efficient strategy. In addition, we showed that reducing execution cycles taken by signal processing algorithm effectively reduces its dynamic power consumption. As an example, FFT/IFFT algorithm, one of the critical block in OFDMA systems is considered for energy analysis.","PeriodicalId":290448,"journal":{"name":"2011 International Conference on Devices and Communications (ICDeCom)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130798506","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

E-Plane Waveguide Diplexer for Ku Band Ku波段e平面波导双工器

2011 International Conference on Devices and Communications (ICDeCom) Pub Date : 2011-03-24 DOI: 10.1109/ICDECOM.2011.5738521

M. Raj, S. Pal

引用次数: 1

Miniaturized Patch Antennas on Magnetodielectric Substrate for X Band Communications 用于X波段通信的磁介质基板小型化贴片天线

2011 International Conference on Devices and Communications (ICDeCom) Pub Date : 2011-03-24 DOI: 10.1109/ICDECOM.2011.5738511

K. Borah, N. Bhattacharyya

引用次数: 7

Low-Profile Impedance Matched Wideband Double Inverted-F Antenna for WiMAX/Wi-Fi Operations in a Laptop Computer 用于笔记本电脑WiMAX/Wi-Fi操作的低轮廓阻抗匹配宽带双倒角天线

2011 International Conference on Devices and Communications (ICDeCom) Pub Date : 2011-03-24 DOI: 10.1109/ICDECOM.2011.5738510

D. Karmokar, Md. Selim Hossain, M. N. Mollah

引用次数: 4

Novel High Speed MCML 8-Bit by 8-Bit Multiplier 新型高速MCML 8位乘8位乘法器

2011 International Conference on Devices and Communications (ICDeCom) Pub Date : 2011-03-24 DOI: 10.1109/ICDECOM.2011.5738526

A. Saha, D. Pal, M. Chandra, M. Goswami

引用次数: 12

Design and Analysis of DS-CDMA RAKE Receiver Simulator for Wireless Communication DS-CDMA无线通信RAKE接收机模拟器的设计与分析

2011 International Conference on Devices and Communications (ICDeCom) Pub Date : 2011-03-24 DOI: 10.1109/ICDECOM.2011.5738569

Mohammad Farukh Hashmi, P. Dhakad, B. Nagaria

引用次数: 10

On Energy Level Performance of Adaptive Power Based WSN in Shadowed Channel 阴影信道下基于自适应功率的WSN的能级性能研究

2011 International Conference on Devices and Communications (ICDeCom) Pub Date : 2011-03-24 DOI: 10.1109/ICDECOM.2011.5738562

A. Nandi, S. Kundu

{"title":"On Energy Level Performance of Adaptive Power Based WSN in Shadowed Channel","authors":"A. Nandi, S. Kundu","doi":"10.1109/ICDECOM.2011.5738562","DOIUrl":"https://doi.org/10.1109/ICDECOM.2011.5738562","url":null,"abstract":"Sensing range is an important measure of the performance in Wireless Sensor Networks (WSNs). The sensing range which is determined by detection probability depends on the nature of the propagation path, transmit power etc. The detection probability degrades with decrease in node spatial density and increase in level of shadowing. In fixed transmit power scheme detection probability degrades with decrease in node spatial density. However it is important to keep the detection probability at a particular level considering the sensing range. Further poor detection probability results degradation in performance of the system. In this paper we propose an adaptive power scheme for WSN where transmit power is adapted as node density and level of shadowing changes so as to keep the detection probability at a given level as demanded by sensing range. The impact of shadowing on detection probability and Bit Error Rate (BER) are investigated. Energy consumption of fixed and adaptive transmit power scheme is analyzed for a given packet size. Further energy consumption for an optimal packet length which yields highest energy efficiency is evaluated for both fixed and adaptive power based schemes.","PeriodicalId":290448,"journal":{"name":"2011 International Conference on Devices and Communications (ICDeCom)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116700779","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Parameter Estimation of Dual Band Elliptical Fractal Patch Antenna Using ANN 基于神经网络的双波段椭圆分形贴片天线参数估计

2011 International Conference on Devices and Communications (ICDeCom) Pub Date : 2011-03-24 DOI: 10.1109/ICDECOM.2011.5738516

Pooja Arora, B. S. Dhaliwal

引用次数: 11

Design of OTA Based Floating Inductor 基于OTA的浮动电感器设计

2011 International Conference on Devices and Communications (ICDeCom) Pub Date : 2011-03-24 DOI: 10.1109/ICDECOM.2011.5738487

Priyanka Soni, B. P. Singh, M. Bhardwaj

引用次数: 11