2017 23rd Asia-Pacific Conference on Communications (APCC)最新文献_第6页

Experimental evaluation of energy efficiency for virtual small-cell networks using smartphone test-bed 基于智能手机试验台的虚拟小蜂窝网络能效实验评估

2017 23rd Asia-Pacific Conference on Communications (APCC) Pub Date : 2017-12-01 DOI: 10.23919/APCC.2017.8303985

Lin Shan, Ou Zhao, K. Temma, K. Hattori, Huan-Bang Li, F. Kojima, F. Adachi

{"title":"Experimental evaluation of energy efficiency for virtual small-cell networks using smartphone test-bed","authors":"Lin Shan, Ou Zhao, K. Temma, K. Hattori, Huan-Bang Li, F. Kojima, F. Adachi","doi":"10.23919/APCC.2017.8303985","DOIUrl":"https://doi.org/10.23919/APCC.2017.8303985","url":null,"abstract":"Our main aim is to develop and demonstrate energy saving technologies for mobile terminals (MTs) equipped with multiple wireless interfaces. We propose a new framework of device-to-device (D2D) cooperative virtual small-cell network in which a MT acts a virtual base station to take advantage of the good channel quality of long range link and the low energy consuming interface of short range link to save energy in MTs. In the proposed D2D cooperative virtual small-cell framework, how to select proxy MT which connects to the wide area network (WAN) and provides the local area network (LAN) connection to cooperated MTs is an important issue, and it is influenced by multiple factors such as channel quality both in WAN and LAN, throughput, battery lifetime, mobility of MTs. In this paper, the energy efficiency improvement is evaluated by a smartphone test-bed and the impacts of WAN channel condition and the number of cooperated MTs are discussed. The result shows that up to 66% improvement can be achieved by the proposal compared to the traditional systems without cooperation.","PeriodicalId":320208,"journal":{"name":"2017 23rd Asia-Pacific Conference on Communications (APCC)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126730236","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

AOA-TOA based localization for 5G cell-less communications 基于AOA-TOA的5G无蜂窝通信定位

2017 23rd Asia-Pacific Conference on Communications (APCC) Pub Date : 2017-12-01 DOI: 10.23919/APCC.2017.8304042

Seungnyun Kim, S. Park, Hyoungju Ji, B. Shim

引用次数: 9

Space-frequency-mode multi-dimensional hybrid modulation in OAM based MIMO-OFDM systems 基于OAM的MIMO-OFDM系统的空频型多维混合调制

2017 23rd Asia-Pacific Conference on Communications (APCC) Pub Date : 2017-12-01 DOI: 10.23919/APCC.2017.8303971

W. Cheng, Yi Liu, Hailin Zhang

{"title":"Space-frequency-mode multi-dimensional hybrid modulation in OAM based MIMO-OFDM systems","authors":"W. Cheng, Yi Liu, Hailin Zhang","doi":"10.23919/APCC.2017.8303971","DOIUrl":"https://doi.org/10.23919/APCC.2017.8303971","url":null,"abstract":"A new modulation scheme, referred to as space-frequency-mode multi-dimensional hybrid modulation (SFMHM), is proposed to be integrated with multiple-input-multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) system in this paper. The key idea of SFMHM is to map a block of information bits to two information carrying units: 1)symbols chosen from a constellation diagram and 2)a subset chosen from all possible combinations of antennas, orbital angular momentum (OAM) modes and subcarriers, which means that only a part of antennas, OAM modes and subcarriers will be activated at any given time. Specifically, the use of the second part will add three additional dimensions to conventional two-dimensional (2-D) amplitude/phase modulation techniques, which will improve the achievable rate significantly. For SFMHM scheme, we propose a computationally efficient mapping method by taking advantage of combinadic representation in combinatorial system, and we further study the achievable rate. Finally, simulation results show that, for the same configuration at the transmitter, SFMHM can achieve higher rate compared with conventional MIMO-OFDM.","PeriodicalId":320208,"journal":{"name":"2017 23rd Asia-Pacific Conference on Communications (APCC)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122112842","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

TDD-based massive MIMO system with multi-antenna user equipments 基于tdd的多天线用户设备大规模MIMO系统

2017 23rd Asia-Pacific Conference on Communications (APCC) Pub Date : 2017-12-01 DOI: 10.23919/APCC.2017.8304054

Xintong Lu, Xi Yang, Shi Jin, Chao-Kai Wen, Wen‐Jun Lu

引用次数: 2

Transmitter beamforming control based on firefly algorithm for massive MIMO systems with per-antenna power constraint 基于萤火虫算法的大规模MIMO系统单天线功率约束下发射机波束形成控制

2017 23rd Asia-Pacific Conference on Communications (APCC) Pub Date : 2017-12-01 DOI: 10.23919/APCC.2017.8303979

Takashi Yamanaka, K. Higuchi

{"title":"Transmitter beamforming control based on firefly algorithm for massive MIMO systems with per-antenna power constraint","authors":"Takashi Yamanaka, K. Higuchi","doi":"10.23919/APCC.2017.8303979","DOIUrl":"https://doi.org/10.23919/APCC.2017.8303979","url":null,"abstract":"In the massive multiple-input multiple-output (MIMO) downlink, transmitter beamforming (BF) to achieve a beamforming (power) gain and/or a reduction in inter-user interference in a multiuser MIMO case based on the channel state information (CSI) at the transmitter side is essential. Massive MIMO requires a large number of transmitter power amplifiers dedicated to each of the transmitter antennas, and the allowable transmit power per power amplifier (thus per transmitter antenna) is severely limited. Therefore, it is necessary to perform transmission BF considering the limitation on the transmit power per antenna. In this paper, we consider BF control using the firefly algorithm (FA) assuming the per-antenna transmit power constraint aiming at maximizing the system throughput defined as log-sum user throughput (equivalently the geometric mean user throughput) corresponding to proportional fairness (PF). The FA is a kind of swarm intelligence and by mimicking the behavior of fireflies that move toward neighboring fireflies based on the distance and brightness of the neighboring fireflies, a multimodal optimization solution is obtained efficiently. By setting the BF matrix as the position of the firefly and the obtainable metric for the system throughput maximization as the brightness of the firefly, we apply the FA to the BF control. We evaluate the performance of BF control using the FA from the viewpoint of the geometric mean user throughput based on computer simulations.","PeriodicalId":320208,"journal":{"name":"2017 23rd Asia-Pacific Conference on Communications (APCC)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123341775","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

D2D communications based scarcity-aware two-stage multicast for video streaming 视频流中基于稀缺性感知的两阶段多播D2D通信

2017 23rd Asia-Pacific Conference on Communications (APCC) Pub Date : 2017-12-01 DOI: 10.23919/APCC.2017.8304057

Xuesen Peng, Jianbang Liu, Li Wuyu, Ping Wang, Caihong Kai, Shengli Zhang

{"title":"D2D communications based scarcity-aware two-stage multicast for video streaming","authors":"Xuesen Peng, Jianbang Liu, Li Wuyu, Ping Wang, Caihong Kai, Shengli Zhang","doi":"10.23919/APCC.2017.8304057","DOIUrl":"https://doi.org/10.23919/APCC.2017.8304057","url":null,"abstract":"This paper proposes a device-to-device (D2D) communications based scarcity-aware two-stage multicast mechanism for delivering video streaming, in which the Base Station (BS) and D2D perform cooperative retransmissions to improve the mobile video quality and relieve the load of BS as well. In prior works, after BS's one-round multicast, the clients directly resort to D2D communications to obtain the missing frames by forming social groups. However, after the first-round multicast of BS, it is possible that some frames have not been correctly received by most of the clients, especially when the channel conditions are not good. That is, there are scarce frames in the network and the clients have very limited copies of them. In this case, it is inefficient for the clients to form social groups and directly exchange frames through D2D communications. Instead, this paper proposes an adaptive two-stage multicast mechanism: the BS first multicast video packets to the clients who request the same video services, after which the clients collect the information of missing frames and send it to the BS. Then the BS evaluates the scarcity of frames and re-multicast the scarce frames, if any, to the clients. After the BS's second-round multicast, the clients can then form groups to perform D2D communications so as to obtain the remaining missing packets from each other. Numerical studies show that the proposed simple scarcity-aware two-stage multicast mechanism can achieve about 5% video quality improvement than the existing one-stage multicast mechanism and have the potential to enhance the downlink capacity of the future 5G wireless network.","PeriodicalId":320208,"journal":{"name":"2017 23rd Asia-Pacific Conference on Communications (APCC)","volume":"23 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130654996","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: 3

Addressing coverage problem in wireless sensor networks based on evolutionary algorithms 基于进化算法的无线传感器网络覆盖问题研究

2017 23rd Asia-Pacific Conference on Communications (APCC) Pub Date : 2017-12-01 DOI: 10.23919/APCC.2017.8304032

Sahar Chehrazad, H. S. Aghdasi, N. Shariati, M. Abolhasan

引用次数: 1

Reconstruction of vertical rainfall fields using satellite communication links 利用卫星通信链路重建垂直降雨场

2017 23rd Asia-Pacific Conference on Communications (APCC) Pub Date : 2017-12-01 DOI: 10.23919/APCC.2017.8304084

Xi Shen, D. Huang, Lu Xu, Xiaowen Tang

引用次数: 7

QoS-constrained area spectral efficiency in ultra-reliable and low-latency industrial wireless networks 超可靠低延迟工业无线网络中qos约束的区域频谱效率

2017 23rd Asia-Pacific Conference on Communications (APCC) Pub Date : 2017-12-01 DOI: 10.23919/APCC.2017.8304074

Bo Chang

引用次数: 9

Experimental evaluation of less-than-best-effort TCP over 802.11 wireless networks 802.11无线网络上非最佳努力TCP的实验评估

2017 23rd Asia-Pacific Conference on Communications (APCC) Pub Date : 2017-12-01 DOI: 10.23919/APCC.2017.8303998

Kevin Ong, S. Zander, David Murray, T. McGill

引用次数: 1