2015 22nd International Conference on Telecommunications (ICT)最新文献

A joint resource allocation and link adaptation algorithm with carrier aggregation for 5G LTE-Advanced network 基于载波聚合的5G LTE-Advanced网络联合资源分配与链路自适应算法

2015 22nd International Conference on Telecommunications (ICT) Pub Date : 2015-04-27 DOI: 10.1109/ICT.2015.7124665

S. Rostami, K. Arshad, P. Rapajic

{"title":"A joint resource allocation and link adaptation algorithm with carrier aggregation for 5G LTE-Advanced network","authors":"S. Rostami, K. Arshad, P. Rapajic","doi":"10.1109/ICT.2015.7124665","DOIUrl":"https://doi.org/10.1109/ICT.2015.7124665","url":null,"abstract":"Carrier aggregation has been introduced by 3rd Generation Partnership project (3GPP) in order to meet the IMT-Advanced requirements. Using carrier aggregation, multiple component carriers with a different bandwidth, dispersed within intra or inter bands can be simultaneously utilised to provide higher data rates, better coverage and lower latency resulting a better user experience. However, carrier aggregation functionality requires modification to the radio resource management function of the network. In this paper, we propose an efficient resource allocation and link adaptation algorithm to support carrier aggregation functionality for downlink 5G LTE-Advanced (LTE-A) network. We consider a non-guaranteed bit rate bearers (best effort traffic), which can be used for non realtime applications such as file downloads. Most of the existing work considered resource allocation, component carrier selection and link adaptation as separate problems. We define a joint radio resource management problem with carrier aggregation functionality and propose a sub-optimal solution with a low computational complexity. Simulation results show clearly that our algorithm outperforms state-of-the-art algorithms.","PeriodicalId":375669,"journal":{"name":"2015 22nd International Conference on Telecommunications (ICT)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116902317","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: 41

Results and analysis based on a novel LTE-R channel measurement at 2.6 GHz 基于2.6 GHz新型LTE-R信道测量的结果与分析

2015 22nd International Conference on Telecommunications (ICT) Pub Date : 2015-04-27 DOI: 10.1109/ICT.2015.7124719

Zhang Siyu, W. Muqing, Lin Xiangli

引用次数: 2

An area packet scheduler to mitigate coexistence issues in a WPAN/WLAN based hetergeneous network 在基于WPAN/WLAN的异构网络中缓解共存问题的区域分组调度程序

2015 22nd International Conference on Telecommunications (ICT) Pub Date : 2015-04-27 DOI: 10.1109/ICT.2015.7124704

Dong Chen, J. Khan, Jason Brown

引用次数: 4

A capacity enhancing modification to RTS/CTS 对RTS/CTS的容量增强修改

2015 22nd International Conference on Telecommunications (ICT) Pub Date : 2015-04-27 DOI: 10.1109/ICT.2015.7124659

R. Hunjet

引用次数: 1

Zeroforcing precoding based MAC design to address hidden terminals in MU-MIMO WLANs 基于零强制预编码的MAC设计，寻址MU-MIMO无线局域网中的隐藏终端

2015 22nd International Conference on Telecommunications (ICT) Pub Date : 2015-04-27 DOI: 10.1109/ICT.2015.7124697

Sanjeeb Shrestha, Gengfa Fang, E. Dutkiewicz, Xiaojing Huang

{"title":"Zeroforcing precoding based MAC design to address hidden terminals in MU-MIMO WLANs","authors":"Sanjeeb Shrestha, Gengfa Fang, E. Dutkiewicz, Xiaojing Huang","doi":"10.1109/ICT.2015.7124697","DOIUrl":"https://doi.org/10.1109/ICT.2015.7124697","url":null,"abstract":"This paper focuses on the Medium Access Control (MAC) layer design for an inevitable Hidden Terminal problem in Multi User Multiple Input Multiple Output (MU-MIMO) Wireless Local Area Networks (WLANs). Specifically, our MAC design is supported by the precoding vectors obtained by Zeroforcing technique which are used to address the Hidden Terminals. An efficient channel sounding process is used by our MAC protocol to obtain the Channel State Information (CSI) from the desired and undesired clients which are used to calculate the precoding vectors at the transmitters (Access Points). Our MAC design then uses these precoding vectors in order to null interferences among the undesired clients to avoid collision of signals and to maintain the concurrent transmissions among the desired clients. The the parameters such as network capacity, signaling overheads and fairness are considered in the design. Our MAC layer design shows a slightly higher signaling overhead compared to RTS/CTS scheme. However, due to the concurrent transmissions after the handshaking process, the cost of singling overheads are compensated. The simulation study of our MAC layer design shows a remarkable constant network capacity gain of 4-5 times in comparison to traditional RTS/CTS. Moreover, the gain is irrespective to the available air-time.","PeriodicalId":375669,"journal":{"name":"2015 22nd International Conference on Telecommunications (ICT)","volume":"122 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126700358","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: 6

Inter-relay interference cancellation for wireless multi-user multi-decode-and-forward relay networks 无线多用户多解码转发中继网络中继间干扰消除

2015 22nd International Conference on Telecommunications (ICT) Pub Date : 2015-04-27 DOI: 10.1109/ICT.2015.7124688

A. Omri, M. Hasna

引用次数: 0

Channel-Grouping based rendezvous algorithm for cognitive radio adhoc networks 基于信道分组的认知无线自组网交会算法

2015 22nd International Conference on Telecommunications (ICT) Pub Date : 2015-04-27 DOI: 10.1109/ICT.2015.7124650

Rui Wu, Wenbin Guo, Feifei Wang

引用次数: 2

On the capacity of the Gaussian mixture channel under average and peak power constraints 高斯混合信道在平均功率和峰值功率约束下的容量

2015 22nd International Conference on Telecommunications (ICT) Pub Date : 2015-04-27 DOI: 10.1109/ICT.2015.7124673

Linyun Huang, Y. Hong, E. Viterbo

引用次数: 2

An opportunistic protocol for two-way relaying systems with direct link 用于具有直接链路的双向中继系统的机会协议

2015 22nd International Conference on Telecommunications (ICT) Pub Date : 2015-04-27 DOI: 10.1109/ICT.2015.7124653

Ou Bai, Gaoli Bi

引用次数: 0

Time domain channel estimation method for uplink OFDMA system 上行OFDMA系统的时域信道估计方法

2015 22nd International Conference on Telecommunications (ICT) Pub Date : 2015-04-27 DOI: 10.1109/ICT.2015.7124712

Tanairat Mata, Mio Hourai, K. Mori, Hideo Kobayashi, P. Boonsrimuang

{"title":"Time domain channel estimation method for uplink OFDMA system","authors":"Tanairat Mata, Mio Hourai, K. Mori, Hideo Kobayashi, P. Boonsrimuang","doi":"10.1109/ICT.2015.7124712","DOIUrl":"https://doi.org/10.1109/ICT.2015.7124712","url":null,"abstract":"Orthogonal Frequency Division Multiple Access (OFDMA) is considered as one of promising wireless access techniques which can accommodate multiple users flexibly and efficiently. In the uplink OFDMA system, it is required to estimate all users' channel frequency responses (CFRs) simultaneously which are used in the equalization for the data information at the base station (BS). To realize this requirement, the Discrete Fourier Transform interpolation based channel estimation (DFTI-CE) method was proposed in which all users transmit one scattered pilot symbol to the BS at the same time. The DFTI-CE method can achieve higher estimation accuracy for all users' CFRs only when the number of FFT points is equal to the number of data subcarriers which corresponds to the Nyquist rate. However the CFR estimation accuracy would be degraded in the actual OFDM system at the non-Nyquist rate in which null subcarriers (zero padding) are added at both ends of OFDM data subcarrier to reject the aliasing occurring at the output of digital to analogue (D/A) converter. To solve this problem, this paper proposes a time domain channel estimation (TD-CE) method which can achieve higher estimation accuracy even at the non-Nyquist rate. This paper presents various simulation results for the uplink OFDMA system in the time-varying fading channels to demonstrate the effectiveness of proposed estimation method.","PeriodicalId":375669,"journal":{"name":"2015 22nd International Conference on Telecommunications (ICT)","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114839072","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