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2015 IEEE 16th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)最新文献

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Asymptotic SINR for millimeter wave massive MIMO cellular networks 毫米波海量MIMO蜂窝网络的渐近信噪比
2015 IEEE 16th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2015-08-31 DOI: 10.1109/SPAWC.2015.7227112
T. Bai, R. Heath
{"title":"Asymptotic SINR for millimeter wave massive MIMO cellular networks","authors":"T. Bai, R. Heath","doi":"10.1109/SPAWC.2015.7227112","DOIUrl":"https://doi.org/10.1109/SPAWC.2015.7227112","url":null,"abstract":"Thanks to the small wavelength at millimeter wave (mmWave) frequency, it is promising to combine massive multiple-input and multiple-output (MIMO) with mmWave. MmWave massive MIMO will differ from the conventional massive MIMO, due to the differences in propagation and hardware constraints. This paper proposes a stochastic geometry framework for evaluating the performance in large-scale mmWave massive MIMO networks. Based on the system model, analytical expressions are provided for the asymptotic signal-to-interference-plus-noise ratio (SINR) distributions in both uplink and downlink, when the number of base station antennas goes to infinity. Numerical results indicate a fast convergence in the SINR distribution to its asymptotic equivalence in dense mmWave networks. A comparison with conventional massive MIMO shows that mmWave massive MIMO achieves a higher cell throughput with sufficiently dense deployments.","PeriodicalId":211324,"journal":{"name":"2015 IEEE 16th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121585912","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: 22
A semidefinite relaxation approach to mobile cloud offloading with computing access point 带计算接入点的移动云卸载半定松弛方法
2015 IEEE 16th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2015-08-31 DOI: 10.1109/SPAWC.2015.7227025
Meng-Hsi Chen, B. Liang, Min Dong
{"title":"A semidefinite relaxation approach to mobile cloud offloading with computing access point","authors":"Meng-Hsi Chen, B. Liang, Min Dong","doi":"10.1109/SPAWC.2015.7227025","DOIUrl":"https://doi.org/10.1109/SPAWC.2015.7227025","url":null,"abstract":"We consider a mobile cloud computing scenario consisting of one user with multiple independent tasks, one computing access point (CAP), and one remote cloud server. The CAP can either process the received tasks from the mobile user or offload them to the cloud, providing additional computation capability over traditional mobile cloud computing systems. We aim to optimize the offloading decision of the user to minimize the overall cost of energy, computation, and delay. It is shown that the problem can be formulated as a non-convex quadratically constrained quadratic program, which is NP-hard in general. We propose an efficient offloading decision algorithm by semidefinite relaxation and a novel randomization mapping method. Our simulation results show that the proposed algorithm gives nearly optimal performance with only a small number of randomization iterations, and adding CAPs to the traditional dichotomy of mobile devices and remote cloud servers can drastically improve mobile cloud computing performance.","PeriodicalId":211324,"journal":{"name":"2015 IEEE 16th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)","volume":"266 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115206847","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: 75
Adaptive interlaced space-time transmission 自适应交错时空传输
2015 IEEE 16th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2015-08-31 DOI: 10.1109/SPAWC.2015.7227012
M. N. Khormuji
{"title":"Adaptive interlaced space-time transmission","authors":"M. N. Khormuji","doi":"10.1109/SPAWC.2015.7227012","DOIUrl":"https://doi.org/10.1109/SPAWC.2015.7227012","url":null,"abstract":"We introduce an interlaced space-time transmission scheme for multiple antenna links, that can compensate the spectral efficiency loss due to the radio channel variations and the associated channel estimation errors. The solution is constructed using multi-coding such that the transmitter interlaces space-time encoded blocks of different codewords belonging to potentially variable-rate codebooks in each coherence interval. The receiver demultiplexes the interlaced codewords to perform sequential decoding along with a progressive refinement of the channel estimation using virtual pilot expansion such that the correctly decoded packets are used as pilots for channel estimation for next packets. We develop achievable rate results for Alamouti code over block fading channels and verify that the theoretical gain is attainable using a rate-matched LTE Turbo code.","PeriodicalId":211324,"journal":{"name":"2015 IEEE 16th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128957058","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
On the fundamental limits of caching in combination networks 论组合网络中缓存的基本限制
2015 IEEE 16th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2015-08-31 DOI: 10.1109/SPAWC.2015.7227127
Mingyue Ji, M. Wong, A. Tulino, J. Llorca, G. Caire, M. Effros, M. Langberg
{"title":"On the fundamental limits of caching in combination networks","authors":"Mingyue Ji, M. Wong, A. Tulino, J. Llorca, G. Caire, M. Effros, M. Langberg","doi":"10.1109/SPAWC.2015.7227127","DOIUrl":"https://doi.org/10.1109/SPAWC.2015.7227127","url":null,"abstract":"The capacity of caching networks has received considerable attention in the past few years. The problem consists of finding the minimum rate (or load) to deliver all users' requested messages from the sources and/or caches in the network. In particular, the capacity of two network models, shared link caching networks and device-to-device caching networks, is relatively well understood. To advance the understanding of the capacity of more general caching networks, in this paper, we study a class of networks of increasing practical interest, namely, the combination caching networks. These networks are formed by a single source connected to n = (rk) user nodes through a layer of k relay nodes, such that each user node is connected to a unique subset of r relay nodes, and caching takes place at the user nodes only. In this setting, particularly useful to model heterogeneous wireless and wireline networks, we show that, in most parameter regimes, by using a concatenated coded multicasting - combination network coding (CM-CNC) scheme, the achievable maximum link load is inversely proportional to the per-user storage capacity M and to the degree of each user r. In addition, we provide an information theoretic converse and show that the gap between achievability and converse bounds is within a logarithmic factor of the system parameters in most regimes of practical interest.","PeriodicalId":211324,"journal":{"name":"2015 IEEE 16th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)","volume":"116 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124610220","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: 65
Delay analysis of heterogeneous cellular networks 异构蜂窝网络的时延分析
2015 IEEE 16th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2015-08-31 DOI: 10.1109/SPAWC.2015.7227023
Gong-Zheng Zhang, Aiping Huang, Tony Q. S. Quek, Hangguan Shan
{"title":"Delay analysis of heterogeneous cellular networks","authors":"Gong-Zheng Zhang, Aiping Huang, Tony Q. S. Quek, Hangguan Shan","doi":"10.1109/SPAWC.2015.7227023","DOIUrl":"https://doi.org/10.1109/SPAWC.2015.7227023","url":null,"abstract":"Due to a wider range of services in future heterogeneous cellular network (HCN), packet transmission delay becomes a more essential performance metric for system design. In this paper, we propose an analytical framework to derive the delay performance of HCN in terms of local delay, by modeling the locations of base stations (BSs) in HCN as superimposed of independent Poisson point processes. In the analysis, the BS activity and temporal correlation of transmissions are taken into consideration, both of which have significant effect on network performance. The effect of mobility, BS density, and association bias factor is investigated through numerical results, which shows that network performance derived ignoring the temporal correlation of transmissions is optimistic.","PeriodicalId":211324,"journal":{"name":"2015 IEEE 16th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125998553","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
Outage probability of correlated binary source transmission over fading multiple access channels 衰落多址信道上相关二进制源传输的中断概率
2015 IEEE 16th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2015-08-31 DOI: 10.1109/SPAWC.2015.7227007
Xiaobo Zhou, Xin He, M. Juntti, T. Matsumoto
{"title":"Outage probability of correlated binary source transmission over fading multiple access channels","authors":"Xiaobo Zhou, Xin He, M. Juntti, T. Matsumoto","doi":"10.1109/SPAWC.2015.7227007","DOIUrl":"https://doi.org/10.1109/SPAWC.2015.7227007","url":null,"abstract":"This paper investigates the outage behavior of transmitting correlated binary sources with arbitrary code rate over quasi-static Rayleigh fading multiple access channel (MAC). The sufficient condition for lossless communication with arbitrary code rate is obtained by assuming separate source and channel coding, which indicates the two rate regions specified by the Slepian-Wolf theorem and the MAC capacity region intersect. An upper bound of the outage probability is derived based on the sufficient condition. Asymptotic property shows the second order diversity gain can be achieved only when the tow sources are fully correlated. Numerical results demonstrate the accuracy of the derived upper bound. The ε-outage achievable rate, which is the largest rate of transmission such that the outage probability is smaller than a predefined ε value, is also analyzed. It is found the ε-outage achievable rate becomes lager with higher transmit power and/or stronger source correlation.","PeriodicalId":211324,"journal":{"name":"2015 IEEE 16th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128042511","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
Robust adaptive coding and modulation scheme for the mobile satellite forward link 移动卫星前向链路的鲁棒自适应编码和调制方案
2015 IEEE 16th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2015-08-31 DOI: 10.1109/SPAWC.2015.7227094
Alberto Rico-Alvariño, Anxo Tato, C. Mosquera
{"title":"Robust adaptive coding and modulation scheme for the mobile satellite forward link","authors":"Alberto Rico-Alvariño, Anxo Tato, C. Mosquera","doi":"10.1109/SPAWC.2015.7227094","DOIUrl":"https://doi.org/10.1109/SPAWC.2015.7227094","url":null,"abstract":"We consider the application of adaptive backoff margins to mobile satellite links. The mapping of channel state information to modulation and coding schemes is complemented by a margin which is obtained as the result of a stochastic gradient descent scheme which uses the decoding history reported by the receiver. The proposed solution does not rely on the knowledge of the channel model and its parameters, which helps to improve its robustness with respect to previous schemes. Analysis and simulations are provided to certify the potential of the exposed ideas.","PeriodicalId":211324,"journal":{"name":"2015 IEEE 16th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)","volume":"147 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116067006","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
Feasibility study of full-duplex relaying in satellite networks 卫星网络中全双工中继的可行性研究
2015 IEEE 16th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2015-08-31 DOI: 10.1109/SPAWC.2015.7227100
B. Shankar, G. Zheng, S. Maleki, B. Ottersten
{"title":"Feasibility study of full-duplex relaying in satellite networks","authors":"B. Shankar, G. Zheng, S. Maleki, B. Ottersten","doi":"10.1109/SPAWC.2015.7227100","DOIUrl":"https://doi.org/10.1109/SPAWC.2015.7227100","url":null,"abstract":"With the successful implementation of full-duplex radio prototypes, traditional orthogonal half-duplex communications is deemed to be inefficient in certain terrestrial applications. While full-duplex techniques are gaining interest in terrestrial communications, thanks to the trend of short-distance and low-power transmissions, their application to satellite communications has drawn little attention. Motivated by this, the paper explores the use of the full-duplex relaying operation on-board the satellite in a DVB-S2 compliant network. Self-interference, whose management is the key component of a full-duplex communication, is the focus of study in this paper. Modelling the effects of self-interference and power amplifier nonlinearities on the quality of the received signal in undertaken. Subsequently, closed-form expressions for the various interference components are derived. The numerical evaluations of derived expressions rely on realistic link budgets and indicate substantial gains in spectral efficiency when self-interference can be well calibrated and measured. This confirms that the satellite full-duplex communications could be a promising solution for the efficient use of satellite spectrum, at least from a technical point of view.","PeriodicalId":211324,"journal":{"name":"2015 IEEE 16th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123643511","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
Structure of optimal privacy-preserving policies in smart-metered systems with a rechargeable battery 具有可充电电池的智能电表系统中最优隐私保护策略的结构
2015 IEEE 16th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2015-08-31 DOI: 10.1109/SPAWC.2015.7227063
Simon Li, A. Khisti, Aditya Mahajan
{"title":"Structure of optimal privacy-preserving policies in smart-metered systems with a rechargeable battery","authors":"Simon Li, A. Khisti, Aditya Mahajan","doi":"10.1109/SPAWC.2015.7227063","DOIUrl":"https://doi.org/10.1109/SPAWC.2015.7227063","url":null,"abstract":"In smart-metered systems, fine-grained time-series power usage data (load profile) is communicated from a user to the utility provider. The correlation of the load profile with a user's private activities leaves open the possibility of inference attacks. Using a rechargeable battery, the user can partially obscure its load profile and provide some protection to the private information using various strategies for charging and discharging the battery (battery management policies). Using mutual information as the privacy metric, we study optimal battery management policies for discrete alphabets. We show that the problem can be formulated as a Markov Decision Process, identify the associated state and action space, and using this framework characterize the optimal policy for the binary alphabet case.","PeriodicalId":211324,"journal":{"name":"2015 IEEE 16th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128763353","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: 13
Performance of rateless codes in ALOHA WANETs ALOHA wanet中无速率码的性能
2015 IEEE 16th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2015-08-31 DOI: 10.1109/SPAWC.2015.7227021
Amogh Rajanna, I. Bergel, M. Kaveh
{"title":"Performance of rateless codes in ALOHA WANETs","authors":"Amogh Rajanna, I. Bergel, M. Kaveh","doi":"10.1109/SPAWC.2015.7227021","DOIUrl":"https://doi.org/10.1109/SPAWC.2015.7227021","url":null,"abstract":"In this paper, we study the performance of wireless adhoc networks (WANETs) that employ rateless error correction codes. We consider a WANET which uses constant power for all transmissions and adapts the pure ALOHA as the channel access protocol. The locations of nodes are modeled by a homogeneous space time Poisson point process with Rayleigh fading. The paper quantifies the rate density and the dynamic variations of packet transmission time by deriving an upper bound on the CCDF of the packet transmission time. The rate density of rateless codes is compared to two benchmarks, the ergodic rate density (ERD) and the rate density of fixed rate codes. The considered rateless coding scheme is attractive, as it does not require time diversity, and each packet is transmitted within a single coherence time. Yet the derived bound shows that the rate density of rateless codes can be quite close to the ergodic rate density. Thus, the presented network has near ERD performance while maintaining shorter delays. We also demonstrate that rateless codes achieve a higher rate density than fixed rate codes.","PeriodicalId":211324,"journal":{"name":"2015 IEEE 16th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121988599","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
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