2011 International Conference on Wireless Communications and Signal Processing (WCSP)最新文献

A sparse reconstruction algorithm with hierarchical Bayesian analysis for wideband spectrum detection 基于层次贝叶斯分析的宽带频谱检测稀疏重建算法

2011 International Conference on Wireless Communications and Signal Processing (WCSP) Pub Date : 2011-12-08 DOI: 10.1109/WCSP.2011.6096723

Xiaorong Xu, Jianwu Zhang, B. Zheng, Junrong Yan

{"title":"A sparse reconstruction algorithm with hierarchical Bayesian analysis for wideband spectrum detection","authors":"Xiaorong Xu, Jianwu Zhang, B. Zheng, Junrong Yan","doi":"10.1109/WCSP.2011.6096723","DOIUrl":"https://doi.org/10.1109/WCSP.2011.6096723","url":null,"abstract":"Bayesian Compressive Sensing (BCS) theory with hierarchical Bayesian analysis model is investigated in the process of wideband spectrum detection and data fusion for Cognitive Wireless Sensor Network (C-WSN). A sparse Bayesian reconstruction method is proposed, which is based on the spatial-temporal correlation structure of real non-stationary spectrum signals sensed by multiple cognitive sensor nodes. Novel wideband spectrum detection and data recovery algorithm are implemented by hierarchical Bayesian analysis model, with higher detection probability and lower reconstruction Mean-Square Errors (MSE). Numerical results confirm our theoretical derivations. It is indicated that, compared with Orthogonal Matched Pursuit (OMP) reconstruction algorithm which is based on greedy algorithm, the proposed Tree Structured Wavelet (TSW) BCS reconstruction scheme has advanced detection performance and lower MSE during data recovery process. Meanwhile, fast convergence could be realized in lower compression rate, which provides the effectiveness of our algorithm and proves that it is suitable for wideband spectrum sensing and data sparse reconstruction in large-scale Cognitive WSN.","PeriodicalId":145041,"journal":{"name":"2011 International Conference on Wireless Communications and Signal Processing (WCSP)","volume":"109 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115170865","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

A smart tracking-based jamming scheme for signals with periodic synchronization sequences 一种基于智能跟踪的周期同步信号干扰方案

2011 International Conference on Wireless Communications and Signal Processing (WCSP) Pub Date : 2011-12-08 DOI: 10.1109/WCSP.2011.6096786

Yuan Chen, Fei He, Jian Yan, Xiang Chen, Yuantao Gu

{"title":"A smart tracking-based jamming scheme for signals with periodic synchronization sequences","authors":"Yuan Chen, Fei He, Jian Yan, Xiang Chen, Yuantao Gu","doi":"10.1109/WCSP.2011.6096786","DOIUrl":"https://doi.org/10.1109/WCSP.2011.6096786","url":null,"abstract":"In this paper, a smart tracking-based jamming scheme is proposed for the signal with synchronization sequences. A different pseudo-random interference sequence, different from the signal's synchronization sequence, is used to track and interfere with the synchronization header in the original signal. With this known pseudo-random synchronization interference sequence, the interference overlapping on the original signal can be nearly cancelled, meanwhile the original signal can be successfully demodulated and decoded at the own receiver without severe interference. However, the other receivers, directly receiving the hybrid signal composed of the original and the pseudo-random interference signals, will fail to recover the original signal without the knowledge of the pseudo-random interference sequence. Compared with traditional full-band full-time noise blanket jamming in communication countermeasures, the advantages of this smart jamming scheme are its low power consumption and up to 100% chance of successful jamming. Simulation results and hardware implementation both show that this scheme can effectively and essentially interfere with the signal at low power consumption.","PeriodicalId":145041,"journal":{"name":"2011 International Conference on Wireless Communications and Signal Processing (WCSP)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115397999","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: 6

An improved adaptive channel estimation method for multiuser multiantenna OFDM systems 一种改进的多用户多天线OFDM系统自适应信道估计方法

2011 International Conference on Wireless Communications and Signal Processing (WCSP) Pub Date : 2011-12-08 DOI: 10.1109/WCSP.2011.6096934

Yue-Xing Gao, Jie Yang, Qing-min Meng, Weiping Zhu

引用次数: 1

Source analysis and separation using spatial filtering and time frequency distribution in array signal processing under complicated environments 空间滤波与时频分布在复杂环境下阵列信号处理中的源分析与分离

2011 International Conference on Wireless Communications and Signal Processing (WCSP) Pub Date : 2011-12-08 DOI: 10.1109/WCSP.2011.6096787

Wen-yan Liu, Xiao-tao Huang, Tong Jin

引用次数: 1

Throughput comparisons of star 32/64 QAM schemes based on mutual information considering cubic metric 基于互信息考虑三次度量的星型32/64 QAM方案吞吐量比较

2011 International Conference on Wireless Communications and Signal Processing (WCSP) Pub Date : 2011-12-08 DOI: 10.1109/WCSP.2011.6096888

Reo Kobayashi, T. Kawamura, N. Miki, M. Sawahashi

{"title":"Throughput comparisons of star 32/64 QAM schemes based on mutual information considering cubic metric","authors":"Reo Kobayashi, T. Kawamura, N. Miki, M. Sawahashi","doi":"10.1109/WCSP.2011.6096888","DOIUrl":"https://doi.org/10.1109/WCSP.2011.6096888","url":null,"abstract":"This paper presents comparisons of the achievable throughput between the star 32/64QAM and square 32/64QAM schemes based on mutual information (MI) considering the peak-to-average power ratio (PAPR) of the modulated signal. As a PAPR criterion, we use a cubic metric (CM) that directly corresponds to the transmission back-off of a power amplifier. In the analysis, we present the best ring ratio for the star 32 or 64QAM scheme from the viewpoint of minimizing the required received signal-to-noise power ratio (SNR) considering the CM that achieves the peak throughput, i.e., maximum error-free transmission rate. We show that the required received SNR considering the CM at the peak throughput is minimized with the number of rings of M = 3 and 4 for star 32QAM and star 64QAM, respectively. Then, we show with the best ring ratios, that the (4, 12, 16) star 32QAM scheme with M = 3 achieves a lower required received SNR considering the CM compared to that for the square 32QAM scheme. Similarly, we show that the (4, 12, 20, 28) star 64QAM scheme with M = 4 achieves almost the same required received SNR considering the CM as that for the square 64QAM scheme.","PeriodicalId":145041,"journal":{"name":"2011 International Conference on Wireless Communications and Signal Processing (WCSP)","volume":"422 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116989002","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: 5

Performance analysis of time division broadcast protocol with incremental relaying 增量中继时分广播协议的性能分析

2011 International Conference on Wireless Communications and Signal Processing (WCSP) Pub Date : 2011-12-08 DOI: 10.1109/WCSP.2011.6096734

Kun Xu, Yuanyuan Gao, Xiaoxin Yi

{"title":"Performance analysis of time division broadcast protocol with incremental relaying","authors":"Kun Xu, Yuanyuan Gao, Xiaoxin Yi","doi":"10.1109/WCSP.2011.6096734","DOIUrl":"https://doi.org/10.1109/WCSP.2011.6096734","url":null,"abstract":"This paper investigates two-way relaying with direct link transmission. We propose to combine incremental relaying (IR) with the time division broadcast protocol (TDBC) to form a new scheme, termed TDBC-IR, to increase the spectral efficiency of TDBC. Assuming half-duplex decode-and-forward relaying, the performance of three protocols, TDBC, TDBC-IR, and physical-layer network coding (PNC), are studied and compared, in terms of outage probability, expected rate (ER), and diversity-multiplexing tradeoff (DMT). It is found that 1)TDBC-IR has the same outage performance as that of TDBC and better than PNC; 2) the ER of TDBC-IR is greater than TDBC and PNC in the whole signal-to-noise ratio region, i.e., TDBC-IR has improved spectral efficiency performance; 3) the maximum achievable diversity order of TDBC-IR and TDBC are both two whereas that of PNC is one; 4) the maximum achievable multiplexing gain of TDBC-IR is one, which is better than TDBC (its maximum achievable is 2/3) and achieves the maximum of PNC (its maximum achievable is one). Since multiplexing gain reflects spectral efficiency, the DMT analysis confirms the spectral efficiency advantage of TDBC-IR over TDBC.","PeriodicalId":145041,"journal":{"name":"2011 International Conference on Wireless Communications and Signal Processing (WCSP)","volume":"1217 49","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120878519","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 QoS constrained cognitive routing algorithm for ad hoc networks based on directional antenna 一种基于定向天线的自组网QoS约束认知路由算法

2011 International Conference on Wireless Communications and Signal Processing (WCSP) Pub Date : 2011-12-08 DOI: 10.1109/WCSP.2011.6096897

P. Feng, Yongfei Ding, B. Liu, Jianmin Wu, Lin Gui, Haibo Zhou

引用次数: 2

A two-stage-game-based power control scheme for OFDMA-relay channels under physical layer security requirement 基于两阶段博弈的ofdma中继信道物理层安全控制方案

2011 International Conference on Wireless Communications and Signal Processing (WCSP) Pub Date : 2011-12-08 DOI: 10.1109/WCSP.2011.6096814

Zhao Hou, Dan Wu, Yueming Cai

引用次数: 0

CDM based reference signal structure using oversampling for OFDM downlink 基于CDM的参考信号结构，采用过采样OFDM下行链路

2011 International Conference on Wireless Communications and Signal Processing (WCSP) Pub Date : 2011-12-08 DOI: 10.1109/WCSP.2011.6096889

Masahiro Tabata, T. Kawamura, H. Taoka, M. Sawahashi

{"title":"CDM based reference signal structure using oversampling for OFDM downlink","authors":"Masahiro Tabata, T. Kawamura, H. Taoka, M. Sawahashi","doi":"10.1109/WCSP.2011.6096889","DOIUrl":"https://doi.org/10.1109/WCSP.2011.6096889","url":null,"abstract":"This paper proposes code division multiplexing (CDM) based reference signal (RS) multiplexing using oversampling for orthogonal frequency division multiplexing (OFDM) in the downlink. In the proposed RS multiplexing scheme, multiple transmission-stream-specific RSs are multiplexed using orthogonal CDM into the same original resource elements (REs) through oversampling of the fast Fourier transform (FFT) (or inverse fast Fourier transform (IFFT)). Hence, the required REs for the increased number of transmission streams, which correspond to the number of transmission antennas, can be reduced compared to that for the conventional RS multiplexing scheme that uses a combination of frequency division multiplexing (FDM) and time division multiplexing (TDM). Computer simulation results show that when the RSs for the third and fourth streams are multiplexed into the same REs as those for first and second streams using orthogonal CDM, the same block error rate performance is achieved as that for the RS multiplexing based on the Release 8 Long-Term Evolution (LTE) radio interface for 4-antenna space-frequency block code (SFBC) plus frequency switched transmit diversity (FSTD).","PeriodicalId":145041,"journal":{"name":"2011 International Conference on Wireless Communications and Signal Processing (WCSP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128472001","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

An efficient algorithm for indoor location based on RFID 一种基于RFID的室内定位算法

2011 International Conference on Wireless Communications and Signal Processing (WCSP) Pub Date : 2011-12-08 DOI: 10.1109/WCSP.2011.6096729

Jing Chen, Gengmin Li, Xuejun Zhang, Tuanfa Qin

引用次数: 3