2011 National Conference on Communications (NCC)最新文献_第2页

A clustering based channel model for indoor wireless communication 基于聚类的室内无线通信信道模型

2011 National Conference on Communications (NCC) Pub Date : 2011-03-17 DOI: 10.1109/NCC.2011.5734738

Akshay Kumar, R. Bhattacharjee, S. Goel

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引用次数: 1

Channel capacity of adaptive transmission schemes using equal gain combining receiver over Hoyt fading channels 等增益组合接收机自适应传输方案在霍伊特衰落信道上的信道容量

2011 National Conference on Communications (NCC) Pub Date : 2011-03-17 DOI: 10.1109/NCC.2011.5734781

R. Subadar, P. R. Sahu

引用次数: 5

Poisson noise removal from images using the fast discrete Curvelet transform 用快速离散曲波变换去除图像中的泊松噪声

2011 National Conference on Communications (NCC) Pub Date : 2011-03-17 DOI: 10.1109/NCC.2011.5734771

Sandeep Palakkal, K. Prabhu

引用次数: 10

Adaptive color illumination for microscopes 用于显微镜的自适应彩色照明

2011 National Conference on Communications (NCC) Pub Date : 2011-03-17 DOI: 10.1117/12.853015

Vishnu Vardhan Makkapati, V. Pathangay

引用次数: 4

Novel polyphase training sequence based synchronization estimator for OFDM 一种基于多相训练序列的OFDM同步估计方法

2011 National Conference on Communications (NCC) Pub Date : 2011-03-17 DOI: 10.1109/NCC.2011.5734711

G. Potnis, D. Jalihal

引用次数: 1

Performance analysis of data and voice connections in a cognitive radio network 认知无线电网络中数据和语音连接的性能分析

2011 National Conference on Communications (NCC) Pub Date : 2011-03-17 DOI: 10.1109/NCC.2011.5734764

M. Kartheek, Rakesh Misra, V. Sharma

引用次数: 12

Modified Half-Circle fractal antenna using DC Theorem for 2.4/5.2 GHz WLAN application 基于DC定理的改进半圆分形天线在2.4/5.2 GHz无线局域网中的应用

2011 National Conference on Communications (NCC) Pub Date : 2011-03-17 DOI: 10.1109/NCC.2011.5734744

Y. Choukiker, Sujeet Rai, S. K. Behera

引用次数: 18

Adaptive overlap-and-add technique in MB-OFDM based UWB receiver design 基于MB-OFDM的超宽带接收机设计中的自适应叠加技术

2011 National Conference on Communications (NCC) Pub Date : 2011-03-17 DOI: 10.1109/NCC.2011.5734747

T. Chakraborty, S. Chakrabarti

{"title":"Adaptive overlap-and-add technique in MB-OFDM based UWB receiver design","authors":"T. Chakraborty, S. Chakrabarti","doi":"10.1109/NCC.2011.5734747","DOIUrl":"https://doi.org/10.1109/NCC.2011.5734747","url":null,"abstract":"Traditional OFDM based transmission system uses Cyclic Prefix (CP) in an OFDM symbol in order to maintain orthogonality of transmission. Present days' Ultra-Wideband (UWB) systems use Multi-Band OFDM (MB-OFDM) techniques for transmission in application like Wireless Personal Area Network (WPAN). UWB based systems are power limited by the regulation of FCC. CP introduces correlation in the transmitted data sequence and hence introduces ripples in the power spectral density (PSD) of the transmitted data. This in turn reduces the range of data transmission. However, use of zero-pad suffix (ZPS) will have a flat PSD and hence does not suffer from the range degradation problem. In the receiver, ZP removal requires use of a technique called as overlap and add (OLA) in order to capture the multipath energy of the channel and maintain the orthogonality in the received data. During transmission, the length of the ZP is fixed and equal to the channel length. During reception, in traditional OFDM receiver, the OLA is done using a ZP length of same as channel length as transmitted. In UWB receiver the FFT window gets smeared due to multipath fading and hence estimation of true FFT window start point does affect the OLA process and hence the overall system performance. In this paper, we propose a method which adapts OLA length in UWB receiver depending on the current band of reception and the band wise estimated true FFT window start point. The proposed method is more beneficiary for high delay spread channel like channel model 4 (CM4). In CM4, the technique can achieve around 1 dB Eb/No gain at 10−2 of BER, while simulated over uncoded MB-OFDM based UWB system.","PeriodicalId":158295,"journal":{"name":"2011 National Conference on Communications (NCC)","volume":"190 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121732606","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: 3

Coexistence possibilities of LTE with ISM technologies and GNSS LTE与ISM技术和GNSS共存的可能性

2011 National Conference on Communications (NCC) Pub Date : 2011-03-17 DOI: 10.1109/NCC.2011.5734742

S. Baghel, M. A. Ingale, Giriraj Goyal

引用次数: 25

Joint stream allocation and scheduling for single-user MIMO communication in WMNs WMNs中单用户MIMO通信的联合流分配与调度

2011 National Conference on Communications (NCC) Pub Date : 2011-03-17 DOI: 10.1109/NCC.2011.5734740

M. Bansal, A. Trivedi

引用次数: 5