2014 IEEE 15th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)最新文献_第10页

Optimal partial decode-and-forward rates for the Gaussian MIMO relay channel using the GSVD 使用GSVD的高斯MIMO中继信道的最优部分解码和转发速率

2014 IEEE 15th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2014-06-22 DOI: 10.1109/SPAWC.2014.6941597

Lennart Gerdes, L. Weiland, W. Utschick

引用次数: 3

HAP-assisted LEO satellite downlink transmission: An energy harvesting perspective hap辅助低轨道卫星下行传输:能量收集视角

2014 IEEE 15th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2014-06-22 DOI: 10.1109/SPAWC.2014.6941426

Zhi Chen, Teng Joon Lim, M. Motani

引用次数: 9

Mean estimation MSE for Kalman filtering of large dimensional sources sent over fading channels 衰落信道上大维信源卡尔曼滤波的均值估计MSE

2014 IEEE 15th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2014-06-22 DOI: 10.1109/SPAWC.2014.6941922

Reza Parseh, D. Slock, K. Kansanen

引用次数: 0

A numerical investigation of all-analog radio self-interference cancellation 全模拟无线电自干扰消除的数值研究

2014 IEEE 15th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2014-06-22 DOI: 10.1109/SPAWC.2014.6941881

A. Gholian, Yiming Ma, Y. Hua

引用次数: 13

Kernel-based nonparametric anomaly detection 基于核函数的非参数异常检测

2014 IEEE 15th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2014-06-22 DOI: 10.1109/SPAWC.2014.6941487

Shaofeng Zou, Yingbin Liang, H. V. Poor, Xinghua Shi

{"title":"Kernel-based nonparametric anomaly detection","authors":"Shaofeng Zou, Yingbin Liang, H. V. Poor, Xinghua Shi","doi":"10.1109/SPAWC.2014.6941487","DOIUrl":"https://doi.org/10.1109/SPAWC.2014.6941487","url":null,"abstract":"An anomaly detection problem is investigated, in which there are totally n sequences, with s anomalous sequences to be detected. Each normal sequence contains m independent and identically distributed (i.i.d.) samples drawn from a distribution p, whereas each anomalous sequence contains m i.i.d. samples drawn from a distribution q that is distinct from p. The distributions p and q are assumed to be unknown a priori. The scenario with a reference sequence generated by p is studied. Distribution-free tests are constructed using maximum mean discrepancy (MMD) as the metric, which is based on mean embeddings of distributions into a reproducing kernel Hilbert space (RKHS). It is shown that as the number n of sequences goes to infinity, if the value of s is known, then the number m of samples in each sequence should be of order O(log n) or larger in order for the developed tests to consistently detect s anomalous sequences. If the value of s is unknown, then m should be of order strictly larger than O(log n). The computational complexity of all developed tests is shown to be polynomial. Numerical results demonstrate that these new tests outperform (or perform as well as) tests based on other competitive traditional statistical approaches and kernel-based approaches under various cases.","PeriodicalId":420837,"journal":{"name":"2014 IEEE 15th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)","volume":"148 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128128860","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

Detection of the number of noncoherent and coherent signals with a simple planar array 用简单的平面阵列检测非相干和相干信号的数量

2014 IEEE 15th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2014-06-22 DOI: 10.1109/SPAWC.2014.6941448

Ke Chen, J. Xin, Hao Tao, Nanning Zheng, A. Sano

引用次数: 0

On optimality of data clustering for packet-level memory-assisted compression of network traffic 数据包级内存辅助网络流量压缩中数据聚类的最优性

2014 IEEE 15th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2014-06-22 DOI: 10.1109/SPAWC.2014.6941726

Ahmad Beirami, Liling Huang, Mohsen Sardari, F. Fekri

{"title":"On optimality of data clustering for packet-level memory-assisted compression of network traffic","authors":"Ahmad Beirami, Liling Huang, Mohsen Sardari, F. Fekri","doi":"10.1109/SPAWC.2014.6941726","DOIUrl":"https://doi.org/10.1109/SPAWC.2014.6941726","url":null,"abstract":"Recently, we proposed a framework called memory-assisted compression that learns the statistical properties of the sequence-generating server at intermediate network nodes and then leverages the learnt models to overcome the inevitable redundancy (overhead) in the universal compression of the payloads of the short-length network packets. In this paper, we prove that when the content-generating server is comprised of a mixture of parametric sources, label-based clustering of the data to their original sequence-generating models from the mixture is optimal almost surely as it achieves the mixture entropy (which is the lower bound on the average codeword length). Motivated by this result, we present a K-means clustering technique as the proof of concept to demonstrate the benefits of memory-assisted compression performance. Simulation results confirm the effectiveness of the proposed approach by matching the expected improvements predicted by theory on man-made mixture sources. Finally, the benefits of the cluster-based memory-assisted compression are validated on real data traffic traces demonstrating more than 50% traffic reduction on average in data gathered from wireless users.","PeriodicalId":420837,"journal":{"name":"2014 IEEE 15th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129744029","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

Power control for cellular networks with large antenna arrays and ubiquitous relaying 具有大型天线阵列和无处不在中继的蜂窝网络的功率控制

2014 IEEE 15th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2014-06-01 DOI: 10.1109/SPAWC.2014.6941318

Raphael Rolny, Celestine Mendler-Dünner, A. Wittneben

引用次数: 3

Directional cell search for millimeter wave cellular systems 毫米波蜂窝系统的定向小区搜索

2014 IEEE 15th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2014-04-20 DOI: 10.1109/SPAWC.2014.6941329

C. Barati, S. A. Hosseini, S. Rangan, Pei Liu, T. Korakis, S. Panwar

{"title":"Directional cell search for millimeter wave cellular systems","authors":"C. Barati, S. A. Hosseini, S. Rangan, Pei Liu, T. Korakis, S. Panwar","doi":"10.1109/SPAWC.2014.6941329","DOIUrl":"https://doi.org/10.1109/SPAWC.2014.6941329","url":null,"abstract":"Millimeter wave (mmW) bands between 30 and 300 GHz are considered a promising candidate for next-generation cellular networks to relieve spectral congestion in conventional cellular frequencies. However, cellular communication at these frequencies will likely require highly directional transmissions to achieve suitable signal range. This reliance on directional beamforming complicates initial cell search since the mobile and base station must jointly search over a potentially large angular directional space to locate a suitable path to initiate communication. This paper proposes a directional cell search procedure where each base station periodically transmits synchronization signals in randomly varying directions. Detectors are derived for this synchronization signal based on a Generalized Likelihood Ratio Test (GLRT) for the case where (i) the mobile has only analog beamforming (where the mobile can “look” in only direction at a time) and (ii) digital beamforming where the mobile has access to digital samples from all antennas. Simulations under realistic parameters demonstrate that mobiles may not be able to achieve suitable detection performance with analog beamforming alone. In contrast, digital beamforming offers dramatically better performance. We argue that the additional power consumption cost of digital beamforming can be offset by using very low quantization rates with minimal performance loss, thus arguing that low-rate fully digital front-ends may be a better design choice for directional cell search.","PeriodicalId":420837,"journal":{"name":"2014 IEEE 15th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133235209","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: 33

Training-based synchronization and channel estimation in AF two-way relaying networks AF双向中继网络中基于训练的同步与信道估计

2014 IEEE 15th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2013-09-25 DOI: 10.1109/SPAWC.2014.6941617

A. Nasir, H. Mehrpouyan, S. Durrani, S. Blostein, R. Kennedy

{"title":"Training-based synchronization and channel estimation in AF two-way relaying networks","authors":"A. Nasir, H. Mehrpouyan, S. Durrani, S. Blostein, R. Kennedy","doi":"10.1109/SPAWC.2014.6941617","DOIUrl":"https://doi.org/10.1109/SPAWC.2014.6941617","url":null,"abstract":"Two-way relaying networks (TWRNs) allow for more bandwidth efficient use of the available spectrum since they allow for simultaneous information exchange between two users with the assistance of an intermediate relay node. However, due to superposition of signals at the relay node, the received signal at the user terminals is affected by multiple impairments, i.e., channel gains, timing offsets, and carrier frequency offsets, that need to be jointly estimated and compensated. This paper presents a training-based system model for amplify-and-forward (AF) TWRNs in the presence of multiple impairments and proposes maximum likelihood and differential evolution based algorithms for joint estimation of these impairments. The Cramér-Rao lower bounds (CRLBs) for the joint estimation of multiple impairments are derived. A minimum mean-square error based receiver is then proposed to compensate the effect of multiple impairments and decode each user's signal. Simulation results show that the performance of the proposed estimators is very close to the derived CRLBs at moderate-to-high signal-to-noise-ratios. It is also shown that the bit-error rate performance of the overall AF TWRN is close to a TWRN that is based on assumption of perfect knowledge of the synchronization parameters.","PeriodicalId":420837,"journal":{"name":"2014 IEEE 15th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130449259","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: 11