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Ensuring Feasibility of Wireless Sensor Networks 确保无线传感器网络的可行性
2008 4th IEEE International Conference on Circuits and Systems for Communications Pub Date : 2008-05-26 DOI: 10.1109/ICCSC.2008.185
Simone Campanoni, W. Fornaciari
{"title":"Ensuring Feasibility of Wireless Sensor Networks","authors":"Simone Campanoni, W. Fornaciari","doi":"10.1109/ICCSC.2008.185","DOIUrl":"https://doi.org/10.1109/ICCSC.2008.185","url":null,"abstract":"A comprehensive WSNs (wireless sensor networks) design methodology should deserve enough effort to select a suitable set of sensors with a proper spatial distribution, in order to ensure a correct monitoring of the parameters relevant for the application. The goal of this paper is to show how it is possible a priori ensuring that a given WSN is actually capable to satisfy the application requirements. In addition to this, the flexibility of the approach is also demonstrated by evaluating the sensitivity of the WSN performance to parameters like sensors distribution, observation time and the events to be analyzed. This paper presents the overall design methodology implemented in SWORDFISH (sensor networks development framework integrating simulation and hardware optimization) and some representative case studies.","PeriodicalId":137660,"journal":{"name":"2008 4th IEEE International Conference on Circuits and Systems for Communications","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131585439","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: 0
Study on Capacity of BLAST System with Error Propagation 考虑误差传播的BLAST系统容量研究
2008 4th IEEE International Conference on Circuits and Systems for Communications Pub Date : 2008-05-26 DOI: 10.1109/ICCSC.2008.89
Zhanjun Jiang, Wen Pan, Dongming Wang, X. You
{"title":"Study on Capacity of BLAST System with Error Propagation","authors":"Zhanjun Jiang, Wen Pan, Dongming Wang, X. You","doi":"10.1109/ICCSC.2008.89","DOIUrl":"https://doi.org/10.1109/ICCSC.2008.89","url":null,"abstract":"The capacity of the BLAST system is larger than that of a single antenna system, but error propagation affects the BLAST architecture capacity. The ergodic capacity is analyzed of BLAST architecture with error propagation (EP-BLAST). We find that in EP-BLAST system, the diversity orders of all symbols transmitted by different antenna are same, which are equal to the smallest diversity order of the symbol in error-free BLAST (EF-BLAST). Since it is difficult to obtain a closed-form solution of the ergodic capacity of EP-BLAST, the upper-bound of the capacity is achieved in this paper.","PeriodicalId":137660,"journal":{"name":"2008 4th IEEE International Conference on Circuits and Systems for Communications","volume":"285 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134105675","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: 0
Carrier Frequency Offset Estimation in Multiantenna Transmission Systems Based on Single-Carrier Modulation 基于单载波调制的多天线传输系统载波频偏估计
2008 4th IEEE International Conference on Circuits and Systems for Communications Pub Date : 2008-05-26 DOI: 10.1109/ICCSC.2008.92
Yaning Zou, M. Valkama, M. Renfors
{"title":"Carrier Frequency Offset Estimation in Multiantenna Transmission Systems Based on Single-Carrier Modulation","authors":"Yaning Zou, M. Valkama, M. Renfors","doi":"10.1109/ICCSC.2008.92","DOIUrl":"https://doi.org/10.1109/ICCSC.2008.92","url":null,"abstract":"The implementation challenges in building compact and low-cost radios for future wireless systems are continuously growing. This is partially due to the introduction of multiantenna transmission techniques, calling for several parallel radio implementations in a single terminal, with considerably reduced implementation resources (size and cost) for individual radios. In this context, one important aspect is the so-called \"dirty RF\" theme stemming from the unavoidable physical limitations of the used analog electronics. This has started to draw wide attention in both academic and industrial communities. One concrete example is the carrier frequency offset (CFO) problem, caused by frequency instability of the used oscillators and the mobility of the terminals, which can severely degrade the system performance. In this paper, we consider the CFO estimation problem in multi-antenna system context utilizing single-carrier modulation. One efficient pilot based algorithm with built-in diversity against fading channel state is proposed and a lower bound for the estimation error variance is derived analytically. This analysis reveals additional elements for further improving the estimator performance, in terms of pilot structure design. Extensive computer simulations are then used to further assess the estimator performance and to verify the analysis results.","PeriodicalId":137660,"journal":{"name":"2008 4th IEEE International Conference on Circuits and Systems for Communications","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132541524","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: 2
Implementation of MB-OFDM Transmitter Baseband Based on FPGA 基于FPGA的MB-OFDM发射机基带实现
2008 4th IEEE International Conference on Circuits and Systems for Communications Pub Date : 2008-05-26 DOI: 10.1109/ICCSC.2008.18
Xu Jinsong, Lu Xiaochun, Wu Haitao, Bian Yujing, Zou Decai, Zou Xiaolong, Wang Chaogang
{"title":"Implementation of MB-OFDM Transmitter Baseband Based on FPGA","authors":"Xu Jinsong, Lu Xiaochun, Wu Haitao, Bian Yujing, Zou Decai, Zou Xiaolong, Wang Chaogang","doi":"10.1109/ICCSC.2008.18","DOIUrl":"https://doi.org/10.1109/ICCSC.2008.18","url":null,"abstract":"Multi-Band Orthogonal Frequency Division Multiplexing (MB-OFDM) is a suitable solution to implementation of high speed data transmission in ultra wideband spectrum by dividing the spectrum available into multiple bands. The baseband of transmitter is one of the most important parts in MB-OFDM system. The structure of MB-OFDM system transmitter is introduced in this paper and the design of transmitter baseband based on FPGA is described in detail. The design has been validated with Xilinx Virtex II FPGA. The results show that all modules designed has achieved the expected purpose both in precision and resource, with simplicity and high efficiency, and can meet the demand of MB-OFDM systems.","PeriodicalId":137660,"journal":{"name":"2008 4th IEEE International Conference on Circuits and Systems for Communications","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131745206","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: 14
Performance of Non-Binary RS-Turbo Concatenated Codes 非二进制RS-Turbo级联码的性能
2008 4th IEEE International Conference on Circuits and Systems for Communications Pub Date : 2008-05-26 DOI: 10.1109/ICCSC.2008.169
Ping Shi, Ming-rui Hou, Rui Lv
{"title":"Performance of Non-Binary RS-Turbo Concatenated Codes","authors":"Ping Shi, Ming-rui Hou, Rui Lv","doi":"10.1109/ICCSC.2008.169","DOIUrl":"https://doi.org/10.1109/ICCSC.2008.169","url":null,"abstract":"In this paper the encoder structure of non-binary turbo codes is presented and the symbol-by-symbol log-MAP decoding algorithm is analyzed in detail. A new scheme of RS-turbo concatenated codes is designed which includes an RS code (255,239,8) and a non-binary Turbo code built from two RSC component codes with m=2 inputs. The simulations were made for frame length N=2048 bits and for the maximum iteration number of 8. The AWGN channel and the BPSK modulation were employed. The simulation results show that the proposed scheme can significantly improve the BER performance at high SNR and reduce the iteration number compared to the conventional non-binary turbo code. Furthermore, the concatenated RS code can supply a simple stopping criterion for Turbo iterative decoding.","PeriodicalId":137660,"journal":{"name":"2008 4th IEEE International Conference on Circuits and Systems for Communications","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130914759","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
Analytical Throughput Evaluation of Wireless Networks Using Multibeam Antennas 多波束天线无线网络吞吐量分析评估
2008 4th IEEE International Conference on Circuits and Systems for Communications Pub Date : 2008-05-26 DOI: 10.1109/ICCSC.2008.91
Xin Li, Yimin D. Zhang, M. Amin
{"title":"Analytical Throughput Evaluation of Wireless Networks Using Multibeam Antennas","authors":"Xin Li, Yimin D. Zhang, M. Amin","doi":"10.1109/ICCSC.2008.91","DOIUrl":"https://doi.org/10.1109/ICCSC.2008.91","url":null,"abstract":"In a wireless network, concurrent communications between a node and multiple neighboring nodes through the use of multibeam antenna (MBA) has been shown effective to utilize the spatial dimensionality. As a result, the network throughput and quality-of-service (QoS) can be improved. MBAs can be implemented using multiple fixed-beam antennas (MFBAs) or multi-channel smart antennas (MCSAs). In this paper, the one-hop throughput performance of a node equipped with MBA is evaluated in an analytical framework. Both MFBA and MCSA are considered by using an equivalent antenna beam model. It becomes clear that the use of MFBA is the pessimistic case of MCSA as the normalized beamwidth reaches the maximum value. The upper bound of throughput is achieved in the presence of idealized collision avoidance schemes, whereas the lower bound is reached in the absence of collision avoidance schemes.","PeriodicalId":137660,"journal":{"name":"2008 4th IEEE International Conference on Circuits and Systems for Communications","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133670386","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
A Selective Feedback Detection Algorithm Based on FDE-NP for MIMO Systems 一种基于FDE-NP的MIMO系统选择性反馈检测算法
2008 4th IEEE International Conference on Circuits and Systems for Communications Pub Date : 2008-05-26 DOI: 10.1109/ICCSC.2008.87
Wei Zhao, Wenjin Wang, Qiuzhe Zhao, Xiqi Gao
{"title":"A Selective Feedback Detection Algorithm Based on FDE-NP for MIMO Systems","authors":"Wei Zhao, Wenjin Wang, Qiuzhe Zhao, Xiqi Gao","doi":"10.1109/ICCSC.2008.87","DOIUrl":"https://doi.org/10.1109/ICCSC.2008.87","url":null,"abstract":"Compared with the conventional FDE scheme, the FDE-NP structure which consists of a linear frequency domain equalizer (FDE) and a time domain noise predictor (NP) has lower complexity and achieves better performance and complexity trade-off. In this paper, we propose a selective detection algorithm for FDE-NP model in MIMO system, which we refer to as selective feedback detection (FDE-NP-SEL) algorithm. By evaluating the average MMSEs during the data transmission for all the possible feedback modes, the new detection algorithm chooses the optimal one to design time-domain NPs. In particular, to simplify the design of the feedback filters, we consider an inverted ordered detection (FDE-NP-INV) algorithm, in which decisions are fed back to predict and cancel their pre-cursor inter-symbol interference (ISI) effects to the previous signals. Simulation results show that the new proposed FDE-NP-INV scheme achieves significant performance improvement over the conventional FDE-NP scheme with the same complexity. Furthermore, we propose the hybrid ordered detection (FDE-NP-HYB) algorithm by combining the FDE-NP-INV algorithm with the conventional FDE-NP scheme . It is shown that the proposed FDE-NP-HYB can further improve the performance.","PeriodicalId":137660,"journal":{"name":"2008 4th IEEE International Conference on Circuits and Systems for Communications","volume":"2021 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115064251","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: 0
Capacity of Impulsive Modulation over Multipath Interference Channels 多径干扰信道上脉冲调制的容量
2008 4th IEEE International Conference on Circuits and Systems for Communications Pub Date : 2008-05-26 DOI: 10.1109/ICCSC.2008.47
M. Gariby, T. Gariby, R. Zamir
{"title":"Capacity of Impulsive Modulation over Multipath Interference Channels","authors":"M. Gariby, T. Gariby, R. Zamir","doi":"10.1109/ICCSC.2008.47","DOIUrl":"https://doi.org/10.1109/ICCSC.2008.47","url":null,"abstract":"We extend results regarding the most favorable degree of impulsive interference to the case of a sparse multipath channel. The system under investigation is of multiple un-synchronized communication links, each employing randomly spread ternary (0,+1,-1) CDMA signaling. It is assumed that the channel-state information, i.e., the instantaneous interference level from neighboring links, is available at the decoder, and this interference is considered as noise. We show that for a fixed average transmission power, the Shannon capacity of the system is maximized by the most impulsive signaling, i.e., spreading patterns consisting of a single non-zero chip. This strengthens our earlier results for the two-user single-path channel case.","PeriodicalId":137660,"journal":{"name":"2008 4th IEEE International Conference on Circuits and Systems for Communications","volume":"182 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115176539","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: 4
A Nonlinear Time Variant Model for Phase Noise in Electrical Oscillators 电振荡器相位噪声的非线性时变模型
2008 4th IEEE International Conference on Circuits and Systems for Communications Pub Date : 2008-05-26 DOI: 10.1109/ICCSC.2008.166
H. Yin, Zhigang Mao
{"title":"A Nonlinear Time Variant Model for Phase Noise in Electrical Oscillators","authors":"H. Yin, Zhigang Mao","doi":"10.1109/ICCSC.2008.166","DOIUrl":"https://doi.org/10.1109/ICCSC.2008.166","url":null,"abstract":"Linear time variant (LTV) model is capable of making accurate predictions about phase noise in electrical oscillators, on the assumption that current-phase relation is linear. Unfortunately, this linearity assumption is not valid in the presence of high-power environmental noise. The proposed nonlinear time variant (NLTV) model modifies the existing LTV model, considering phase response saturation in electrical oscillators. The accuracy of this model is verified through the simulation of a colpitts oscillator using","PeriodicalId":137660,"journal":{"name":"2008 4th IEEE International Conference on Circuits and Systems for Communications","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115265792","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: 0
The Influence of Subchannel Diversity on the Performance of OFDMA Systems Based on IEEE 802.16 基于IEEE 802.16的子信道分集对OFDMA系统性能的影响
2008 4th IEEE International Conference on Circuits and Systems for Communications Pub Date : 2008-05-26 DOI: 10.1109/ICCSC.2008.12
M. Einhaus, B. Wolz, B. Walke
{"title":"The Influence of Subchannel Diversity on the Performance of OFDMA Systems Based on IEEE 802.16","authors":"M. Einhaus, B. Wolz, B. Walke","doi":"10.1109/ICCSC.2008.12","DOIUrl":"https://doi.org/10.1109/ICCSC.2008.12","url":null,"abstract":"The performance of a mobile radio system based on OFDMA is determined by the type of mapping of logical subchannels, which are allocated for data transmissions, onto the frequency channel. The mapping scheme affects the diversity both within and between the OFDMA subchannels. This paper provides a performance comparison of different subchannel mappings from MAC point of view by means of stochastic event- driven simulations. The tradeoff between the effects of mapping subchannels onto distributed and adjacent subcarrier sets are investigated in detail. The effects are robust SNR estimation and possible throughput gains due to frequency adaptive scheduling, respectively.","PeriodicalId":137660,"journal":{"name":"2008 4th IEEE International Conference on Circuits and Systems for Communications","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122760414","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
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