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2012 1st IEEE International Conference on Communications in China (ICCC)最新文献

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Performance analysis of ZF and MMSE receivers in uplink of MU-MIMO system MU-MIMO系统上行ZF和MMSE接收机性能分析
2012 1st IEEE International Conference on Communications in China (ICCC) Pub Date : 2012-11-26 DOI: 10.1109/ICCChina.2012.6356863
Haiquan Wang, Ruiming Chen, L. Shen
{"title":"Performance analysis of ZF and MMSE receivers in uplink of MU-MIMO system","authors":"Haiquan Wang, Ruiming Chen, L. Shen","doi":"10.1109/ICCChina.2012.6356863","DOIUrl":"https://doi.org/10.1109/ICCChina.2012.6356863","url":null,"abstract":"For uplink of Multiuser (MU) Multiple-Input, Multiple-Output (MIMO) system with M receive antennas at base station and one transmit antenna at each user, in this paper, performances of linear decoders, namely Zero-Forcing decoder and Minimal Mean-Square Error (MMSE) decoder, are investigated. Differing from existing results which mainly describe various asymptotic properties, this paper gives analytical formulas of estimating pair-wise error probabilities (PEP) of ZF and MMSE decoders for given parameters M, K (number of users), and ρ (Signal-to-Noise Ratio, SNR). Furthermore, a formula estimating MMSE decoder dB gain over ZF decoder is given. Based on this formula, an analytical formula calculating the gain when ρ goes to infinite is also presented, which is almost the same as one given in the paper. At last, simulations to confirm these formulas are shown.","PeriodicalId":154082,"journal":{"name":"2012 1st IEEE International Conference on Communications in China (ICCC)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133680720","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: 10
Two-step construction method of protograph-based AR4JA codes in deep space communication 深空通信中基于原型的AR4JA码两步构建方法
2012 1st IEEE International Conference on Communications in China (ICCC) Pub Date : 2012-11-26 DOI: 10.1109/ICCChina.2012.6356946
Gu Lv, Mingchuan Yang, Hui Li, Ming Li, Xiaofeng Liu
{"title":"Two-step construction method of protograph-based AR4JA codes in deep space communication","authors":"Gu Lv, Mingchuan Yang, Hui Li, Ming Li, Xiaofeng Liu","doi":"10.1109/ICCChina.2012.6356946","DOIUrl":"https://doi.org/10.1109/ICCChina.2012.6356946","url":null,"abstract":"This paper discusses the construction of the Accumulate-Repeat-4-Jagged-Accumulate(AR4JA) codes which is suitable for the deep-space communication based on the protograph. Two-step construction method of designing the AR4JA codes whose minimum distance grows linearly with block size, is proposed. Two-step expansion improves the traditional PEG with adding the ACE algorithm for placing edges in a protograph-based code, which brings down the error floor. Compared to the traditional random expansion and the one step expansion like Progressive Edge-Growth(PEG), the two-step construction algorithm aims at constructing the AR4JA codes with high performance and low complexity. Verified by the simulation, the BER performance of the two-step expansion method is similar to the ideal AR4JA codes in the deep space channel condition. With the same Eb/N0, the two-step construction method shows the lower BER than random construction method and one-step extension method through the simulation results.","PeriodicalId":154082,"journal":{"name":"2012 1st IEEE International Conference on Communications in China (ICCC)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134118064","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
Impact of outdated channel state information on multiuser cooperative relay networks in co-channel interference environments 同信道干扰环境下信道状态过时信息对多用户协同中继网络的影响
2012 1st IEEE International Conference on Communications in China (ICCC) Pub Date : 2012-11-26 DOI: 10.1109/ICCChina.2012.6356935
Xianfu Lei, Wen Zhou, P. Fan, Lisheng Fan
{"title":"Impact of outdated channel state information on multiuser cooperative relay networks in co-channel interference environments","authors":"Xianfu Lei, Wen Zhou, P. Fan, Lisheng Fan","doi":"10.1109/ICCChina.2012.6356935","DOIUrl":"https://doi.org/10.1109/ICCChina.2012.6356935","url":null,"abstract":"This paper considers multiuser cooperative relay networks with user selection at the mobile station, where both the relay and mobile users are corrupted by a finite number of co-channel interferers. We study the impact of the outdated channel state information (CSI) on the system performances over time-varying Rayleigh fading channels by deriving the tight lower bounds for the outage probability and symbol error rate (SER). In further, we derive the asymptotic expressions of the outage probability and SER with high signal-to-interference ratio (SIR). Finally the proposed theoretical studies are verified by the simulation results.","PeriodicalId":154082,"journal":{"name":"2012 1st IEEE International Conference on Communications in China (ICCC)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132979931","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
Optimal Design of extended slot allocation for multiuser relay networks 多用户中继网络扩展时隙分配优化设计
2012 1st IEEE International Conference on Communications in China (ICCC) Pub Date : 2012-11-26 DOI: 10.1109/ICCChina.2012.6356930
Insook Kim, Dongwoo Kim
{"title":"Optimal Design of extended slot allocation for multiuser relay networks","authors":"Insook Kim, Dongwoo Kim","doi":"10.1109/ICCChina.2012.6356930","DOIUrl":"https://doi.org/10.1109/ICCChina.2012.6356930","url":null,"abstract":"We consider a wireless sensor network where a relay helps multiple source-destination pairs. The relay helps communication pairs in a probabilistic manner during several relaying slots. We formulate an optimization problem to find slot-sharing ratio maximizing an upper bound of the expected sum rate while the upper bound of each user's rate satisfying a predetermined target for the given number of relaying slots. An exact optimal value of slot-sharing ratio is provided by using Karush-Kuhn-Tucker (KKT) conditions. And we propose an algorithm to search the optimal number of relaying slots. Numerical results are presented to illustrate the optimal slotsharing ratio and the optimal number of relaying slots.","PeriodicalId":154082,"journal":{"name":"2012 1st IEEE International Conference on Communications in China (ICCC)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116603325","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 distributed topology discovery algorithm for Linear Sensor Networks 线性传感器网络的分布式拓扑发现算法
2012 1st IEEE International Conference on Communications in China (ICCC) Pub Date : 2012-11-26 DOI: 10.1109/ICCChina.2012.6356988
I. Jawhar, N. Mohamed, Liren Zhang
{"title":"A distributed topology discovery algorithm for Linear Sensor Networks","authors":"I. Jawhar, N. Mohamed, Liren Zhang","doi":"10.1109/ICCChina.2012.6356988","DOIUrl":"https://doi.org/10.1109/ICCChina.2012.6356988","url":null,"abstract":"The technology of sensor devices and networks is evolving rapidly with significant advances in size, processing power, memory, and energy efficiency. In addition, the cost of sensors is constantly decreasing making it possible to use large quantities of these sensors in a wide variety of important applications in environmental, military, commercial, health care, and other fields. In order to monitor certain types of infrastructures. Many of these applications involve lining up the sensors in a linear form, making a special class of these networks which are defined in this work as Linear Sensor Networks (LSNs). In a previous paper, we introduced the concept of LSNs along with a classification of the different types of LSNs, a sample of their applications and the motivation for designing specialized protocols that take advantage of the linearity of the network to enhance their communication efficiency, reliability, fault tolerance, energy savings, and network lifetime. This paper presents a distributed topology discovery algorithm for a hierarchical two-level LSNs. New definitions for important structure and design parameters are introduced. The proposed protocol allows the nodes to construct an ordered list of the nodes in the network which can be used to create an efficient routing table. In addition, it would be useful for simplifying, and enhancing the reliability and robustness of the routing process by taking advantage of the linear alignments of the nodes. Furthermore, the protocol does not require the nodes to have location detection capabilities such as GPS, which would lead to a more complex design and higher cost of the sensor nodes.","PeriodicalId":154082,"journal":{"name":"2012 1st IEEE International Conference on Communications in China (ICCC)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124938201","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: 20
Energy minimization in two-way relay networks with digital network coding 数字网络编码的双向中继网络能量最小化
2012 1st IEEE International Conference on Communications in China (ICCC) Pub Date : 2012-11-26 DOI: 10.1109/ICCChina.2012.6356854
Zhi Chen, Teng Joon Lim, M. Motani
{"title":"Energy minimization in two-way relay networks with digital network coding","authors":"Zhi Chen, Teng Joon Lim, M. Motani","doi":"10.1109/ICCChina.2012.6356854","DOIUrl":"https://doi.org/10.1109/ICCChina.2012.6356854","url":null,"abstract":"In a two-way wireless relay network, two nodes communicate with each other through a relay, and throughput is enhanced by the relay transmitting a linear combination of the messages received from the two sources either at the bit level (digital network coding) or the signal level (analog network coding). In this paper, we solve for the fraction of time resources allocated to each transmission mode in a DNC-based two-way relay network that minimizes total energy while ensuring queue stability at all nodes, for a given pair of random packet arrival rates. We also provide a queueing analysis of the relaying protocol designed.","PeriodicalId":154082,"journal":{"name":"2012 1st IEEE International Conference on Communications in China (ICCC)","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124077768","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
Utility maximization over ergodic capacity regions of fading OFDMA broadcast channels 衰落OFDMA广播信道遍历容量区域的效用最大化
2012 1st IEEE International Conference on Communications in China (ICCC) Pub Date : 2012-11-26 DOI: 10.1109/ICCChina.2012.6356949
Xin Wang, Zhaoquan Li
{"title":"Utility maximization over ergodic capacity regions of fading OFDMA broadcast channels","authors":"Xin Wang, Zhaoquan Li","doi":"10.1109/ICCChina.2012.6356949","DOIUrl":"https://doi.org/10.1109/ICCChina.2012.6356949","url":null,"abstract":"This paper considers the jointly optimal rate and power allocation that maximizes a utility function of average rates in fading OFDMA broadcast channels. Derived under the assumption that superposition coding is allowed per subcarrier, the proposed low-complexity (yet capacity-achieving) resource allocation scheme can yield higher achievable rates than the existing approaches based on exclusive subcarrier assignment. In addition, relying on the stochastic optimization tools, we develop a class of stochastic gradient iterations that are capable of converging to the optimal benchmarks without the knowledge of fading channel statistics a priori.","PeriodicalId":154082,"journal":{"name":"2012 1st IEEE International Conference on Communications in China (ICCC)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127402879","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
A dynamic weighting of attributes in heterogeneous wireless networks using fuzzy linguistic variables 基于模糊语言变量的异构无线网络属性动态加权
2012 1st IEEE International Conference on Communications in China (ICCC) Pub Date : 2012-11-26 DOI: 10.1109/ICCChina.2012.6356974
A. Mehbodniya, F. Kaleem, K. Yen, F. Adachi
{"title":"A dynamic weighting of attributes in heterogeneous wireless networks using fuzzy linguistic variables","authors":"A. Mehbodniya, F. Kaleem, K. Yen, F. Adachi","doi":"10.1109/ICCChina.2012.6356974","DOIUrl":"https://doi.org/10.1109/ICCChina.2012.6356974","url":null,"abstract":"Even though different wireless Network Access Technologies (NAT) with different specifications and applications have been developed, no single wireless technology can satisfy the anytime, anywhere, and any service wireless access needs of mobile users. A real seamless mobile environment is only realized by considering vertical and horizontal handoffs together. One of the major design issues in heterogeneous wireless networks is the support of vertical handoff (VHO). VHO occurs when a user with a multi-interface terminal changes connection from one type of wireless access technology to another while maintaining an active session. In this paper we present a novel multi-criteria VHO algorithm, which chooses the target NAT based on the several factors such as user preferences, system parameters and QoS requirements for different traffic classes. Two modules i.e., VHO Necessity Estimation (VHONE) module and target NAT selection module, are designed. Both modules function based on weighting the different users' and system's parameters. To improve the robustness of our algorithm, the weighting system is designed based on the concept of fuzzy linguistic variables.","PeriodicalId":154082,"journal":{"name":"2012 1st IEEE International Conference on Communications in China (ICCC)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127796733","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: 9
Signal space alignment and degrees of freedom for the two-cluster multi-way relay channel 双簇多路中继信道的信号空间对准和自由度
2012 1st IEEE International Conference on Communications in China (ICCC) Pub Date : 2012-11-26 DOI: 10.1109/ICCChina.2012.6356855
Ye Tian, A. Yener
{"title":"Signal space alignment and degrees of freedom for the two-cluster multi-way relay channel","authors":"Ye Tian, A. Yener","doi":"10.1109/ICCChina.2012.6356855","DOIUrl":"https://doi.org/10.1109/ICCChina.2012.6356855","url":null,"abstract":"This paper investigates the degrees of freedom (DoF) of the multi-way relay channel. Specifically, the focus is on the case when there are two clusters and each cluster has two users that wish to exchange messages within the cluster with the help of the relay. It is assumed that the relay has N antennas and each of the users has M antennas. A DoF outerbound is derived and it is shown that for several scenarios of interests the DoF outerbound can be achieved. Specifically, when N ≤ M, a network coding based two-way relaying approach with time division multiplex access (TDMA) is sufficient to achieve the DoF outerbound. When M <; N ≤ 4/3M, the signal space alignment with multiple access and broadcast transmission between the clusters can achieve the DoF outerbound. It is also show that when N ≥ 4M, the DoF outerbound can be achieved by just using multiple access and broadcast transmission between the users.","PeriodicalId":154082,"journal":{"name":"2012 1st IEEE International Conference on Communications in China (ICCC)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126484263","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
Achievable rates and energy efficiency in cognitive radio channels with sensing errors 具有感知误差的认知无线电信道的可实现速率和能量效率
2012 1st IEEE International Conference on Communications in China (ICCC) Pub Date : 2012-11-26 DOI: 10.1109/ICCChina.2012.6356857
M. C. Gursoy, Gozde Ozcan, Sami Akın
{"title":"Achievable rates and energy efficiency in cognitive radio channels with sensing errors","authors":"M. C. Gursoy, Gozde Ozcan, Sami Akın","doi":"10.1109/ICCChina.2012.6356857","DOIUrl":"https://doi.org/10.1109/ICCChina.2012.6356857","url":null,"abstract":"In this paper, achievable rates and energy efficiency in cognitive radio channels are analyzed in the presence of sensing errors. The cognitive secondary users are initially assumed to perform channel sensing and then enter into data transmission phase. Under sensing uncertainty and Gaussian primary user interference assumptions, additive disturbance experienced at the secondary receiver is seen to have a Gaussian mixture density. Achievable rates under such assumptions are examined and a closed-form rate expression is determined. An outage capacity formulation is also derived. Finally, energy efficiency is analyzed by investigating the minimum energy per bit and wideband slope expressions in the low-SNR regime. Through this analysis, tradeoffs and interactions between sensing parameters, sensing performance, throughput, transmission energy, and energy efficiency are identified.","PeriodicalId":154082,"journal":{"name":"2012 1st IEEE International Conference on Communications in China (ICCC)","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127616834","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
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