2010 44th Annual Conference on Information Sciences and Systems (CISS)最新文献_第6页

Proportional fair scheduling for multi-cell multi-user MIMO systems 多小区多用户MIMO系统的比例公平调度

2010 44th Annual Conference on Information Sciences and Systems (CISS) Pub Date : 2010-03-17 DOI: 10.1109/CISS.2010.5464834

Lingjia Liu, Young-Han Nam, Jianzhong Zhang

引用次数: 49

Outage probability analysis of cognitive radio networks under self-coexistence constraint 自共存约束下认知无线网络的中断概率分析

2010 44th Annual Conference on Information Sciences and Systems (CISS) Pub Date : 2010-03-17 DOI: 10.1109/CISS.2010.5464750

Syed Ali Raza Zaidi, D. McLernon, M. Ghogho

{"title":"Outage probability analysis of cognitive radio networks under self-coexistence constraint","authors":"Syed Ali Raza Zaidi, D. McLernon, M. Ghogho","doi":"10.1109/CISS.2010.5464750","DOIUrl":"https://doi.org/10.1109/CISS.2010.5464750","url":null,"abstract":"Cognitive radio networks (CRNs) are envisioned to eradicate the artificial scarcity caused by today's stringent spectrum allocation policy. In this article, we develop a statistical framework to model the outage probability at any arbitrary primary/licensed user, while operating in the presence of a collocated secondary network/CRN. A system model based on stochastic geometry (utilizing the theory of a Poisson point process) is introduced to model the transmission/reception/detection uncertainty due to the random locations and topology of both primary and secondary users. The primary beacon enabled interweave spectrum sharing model is utilized for evaluating outage and interference at a typical primary receiver. It is shown that the self-coexistence constraint ignored in past studies plays a vital role in the determination of outage and interference. A statistical model for interference is developed to incorporate the self-coexistence constraint in terms of medium access probability (MAP). Our study also indicates that under the availability of multiple channels/sub-channels, outage probability also depends on the probability of picking the same channel. Optimal selection of MAP and channel selection probability is briefly discussed. Our analytical and simulation results further consolidate the argument that past studies which do not cater for the self-coexistence constraint, over-estimate the interference.","PeriodicalId":118872,"journal":{"name":"2010 44th Annual Conference on Information Sciences and Systems (CISS)","volume":"165 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126225466","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

Distributed error-probability-minimizing relay selection for cooperative wireless networks 协作无线网络的分布式差错概率最小化中继选择

2010 44th Annual Conference on Information Sciences and Systems (CISS) Pub Date : 2010-03-17 DOI: 10.1109/CISS.2010.5464943

Jing Liu, Kefei Lu, Xiaodong Cai

{"title":"Distributed error-probability-minimizing relay selection for cooperative wireless networks","authors":"Jing Liu, Kefei Lu, Xiaodong Cai","doi":"10.1109/CISS.2010.5464943","DOIUrl":"https://doi.org/10.1109/CISS.2010.5464943","url":null,"abstract":"The distributed relay selection protocol recently developed by Bletsas et. al. provides a simple and practical mean of achieving cooperative diversity. However, for cooperative networks where relays employ the decode-and- forward (DF) method to send information, it cannot achieve full diversity unless each relay knows whether it decodes correctly or not. Moreover, the criterion used to select the best relay is not optimal since it does not minimize error probability. In this paper, we develop a distributed relay selection method for DF cooperative networks, that uses an error-probability minimizing criterion to select relay and can achieve full diversity without requiring the relay to know whether it decodes correctly. Moreover, we also develop a hybrid cooperative protocol that not only selects the best relay using an error-probability minimizing criterion but also chooses a better relaying method from DF and amplify-and-forward (AF). Our simulations show that our both protocols can achieve full diversity and outperform the protocol developed by Bletsas et. al.. Furthermore, our hybrid protocol offers better performance than the error-probability- minimizing DF protocol. 1","PeriodicalId":118872,"journal":{"name":"2010 44th Annual Conference on Information Sciences and Systems (CISS)","volume":"3346 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127498764","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

Distributed wireless network utility maximization 分布式无线网络效用最大化

2010 44th Annual Conference on Information Sciences and Systems (CISS) Pub Date : 2010-03-17 DOI: 10.1109/CISS.2010.5464710

S. Firouzabadi, D. O'Neill, A. Goldsmith

引用次数: 7

A review of crosstalk estimation methods using SNR feedback 基于信噪比反馈的串扰估计方法综述

2010 44th Annual Conference on Information Sciences and Systems (CISS) Pub Date : 2010-03-17 DOI: 10.1109/CISS.2010.5464754

P. Whiting

引用次数: 0

Pilot-based crosstalk channel estimation for vector-enabled VDSL systems 矢量支持VDSL系统的导频串扰信道估计

2010 44th Annual Conference on Information Sciences and Systems (CISS) Pub Date : 2010-03-17 DOI: 10.1109/CISS.2010.5464712

J. Maes, C. Nuzman, A. Wijngaarden, D. V. Bruyssel

{"title":"Pilot-based crosstalk channel estimation for vector-enabled VDSL systems","authors":"J. Maes, C. Nuzman, A. Wijngaarden, D. V. Bruyssel","doi":"10.1109/CISS.2010.5464712","DOIUrl":"https://doi.org/10.1109/CISS.2010.5464712","url":null,"abstract":"Recently, the International Telecommunication Union has consented the ITU-T G.993.5 recommendation on vectoring in VDSL2 technology, which specifies the required functionality for interoperability between chipsets of different vendors to achieve vectoring. This paper will briefly review the principles of vectoring and the underlying precoding and channel estimation techniques. This framework is then used to introduce mechanisms for crosstalk channel estimation that exploit channel smoothness with the aid of frequency-dependent pilot sequences, as well as mechanisms that allow fast and simultaneous initialization by targeted assignment of pilot sequences. A pilot-based technique is described that exploits the robustness of the synchronization symbols to estimate crosstalk emanating from “legacy” VDSL2 lines within a vectoring group. This allows cancellation of crosstalk from legacy lines without replacement of the installed VDSL2 customer premises equipment. Some of these techniques are compatible with the current version of ITU-T G.993.5 recommendation, while others require changes that are under consideration for possible inclusion in future amendments.","PeriodicalId":118872,"journal":{"name":"2010 44th Annual Conference on Information Sciences and Systems (CISS)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131853247","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

Optimum experimental design for estimating spatial variogram in cognitive radio networks 认知无线电网络空间变异函数估计的最佳实验设计

2010 44th Annual Conference on Information Sciences and Systems (CISS) Pub Date : 2010-03-17 DOI: 10.1109/CISS.2010.5464833

Zhenghao Zhang, Husheng Li, Changxing Pei

引用次数: 4

Concentration of measure for block diagonal matrices with repeated blocks 具有重复块的块对角矩阵的测量浓度

2010 44th Annual Conference on Information Sciences and Systems (CISS) Pub Date : 2010-03-17 DOI: 10.1109/CISS.2010.5464965

C. Rozell, H. L. Yap, J. Park, M. Wakin

引用次数: 12

Self-organizing Dynamic Fractional Frequency Reuse on the uplink of OFDMA systems OFDMA系统上行链路的自组织动态分数频率复用

2010 44th Annual Conference on Information Sciences and Systems (CISS) Pub Date : 2010-03-17 DOI: 10.1109/CISS.2010.5464705

Balaji Rengarajan, A. Stolyar, H. Viswanathan

{"title":"Self-organizing Dynamic Fractional Frequency Reuse on the uplink of OFDMA systems","authors":"Balaji Rengarajan, A. Stolyar, H. Viswanathan","doi":"10.1109/CISS.2010.5464705","DOIUrl":"https://doi.org/10.1109/CISS.2010.5464705","url":null,"abstract":"Reverse link (or uplink) performance of cellular systems is becoming increasingly important with the emergence of new uplink-bandwidth intensive applications such as Video Share [14], where end users upload video clips captured through their mobile devices. In particular, it is important to design the system to provide good user throughput in most of the coverage area, including at the cell edge. Soft fractional frequency reuse (FFR) is one of the techniques for mitigating inter-cell interference in cellular systems, leading to overall spectral efficiency enhancements and/or cell edge throughput improvements. We propose a novel algorithm that dynamically creates efficient soft FFR patterns on the uplink of orthogonal frequency division multiple access (OFDMA) based cellular systems; this allows the system to “automatically” adapt to user traffic distribution and system layout. Our algorithm is based on systematically ascending towards a local maximum of the system-wide sum of user utilities, which depend on user throughputs. We show that this can be done in a semi-autonomous fashion: each sector does its resource allocation independently, with only an infrequent periodic exchange of interference costs between neighboring sectors. The proposed algorithm, called Multi-sector Gradient for Uplink (MGR-UL), allocates in-sector resources (power, frequency, time-slots to each user) in a way that simultaneously takes into account both the benefit to its “own” users' utility and the cost of creating interference to neighboring sectors; along with that each sector estimates the cost of interference to itself. Extensive simulation results show that significant performance benefits (up to 69% in total throughput in some typical scenarios) can be achieved with respect to a baseline approach. Simulations also show the automatic formation of soft FFR patterns.","PeriodicalId":118872,"journal":{"name":"2010 44th Annual Conference on Information Sciences and Systems (CISS)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134261664","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: 48

On the code tracking performance of GNSS modulation GNSS调制的码跟踪性能研究

2010 44th Annual Conference on Information Sciences and Systems (CISS) Pub Date : 2010-03-17 DOI: 10.1109/CISS.2010.5464809

François D. Côté, I. Psaromiligkos, W. Gross

引用次数: 0