2012 IEEE 75th Vehicular Technology Conference (VTC Spring)最新文献_第3页

Design of Predistorter Using Measured Nonlinear Characteristics of Power Amplifier with Memory Effect 基于记忆效应的功放非线性特性的预失真器设计

2012 IEEE 75th Vehicular Technology Conference (VTC Spring) Pub Date : 2012-05-06 DOI: 10.1109/VETECS.2012.6240090

Y. Oishi, Shigekazu Kimura, D. Takago, Y. Daido, K. Araki, E. Fukuda, T. Takano

引用次数: 1

Incentive Mechanism for Uplink Interference Avoidance in Two-Tier Macro-Femto Networks 两层宏femto网络中上行干扰规避的激励机制

2012 IEEE 75th Vehicular Technology Conference (VTC Spring) Pub Date : 2012-05-06 DOI: 10.1109/VETECS.2012.6240023

Z. Xiao, Peng Wang, Xu Zhang, S. Mahato, Lei Chen, Jie Zhang

{"title":"Incentive Mechanism for Uplink Interference Avoidance in Two-Tier Macro-Femto Networks","authors":"Z. Xiao, Peng Wang, Xu Zhang, S. Mahato, Lei Chen, Jie Zhang","doi":"10.1109/VETECS.2012.6240023","DOIUrl":"https://doi.org/10.1109/VETECS.2012.6240023","url":null,"abstract":"Femtocell has been considered as a promising technology in wireless communications to extend indoor service coverage and enhance overall network capacity. Two-tier networks, where the current cellular networks, i.e., macrocells, overlapped with a large number of randomly distributed femtocells, can potentially bring significant benefits. If femtocell access points (FAPs) operate within the same frequency band as macrocells, the cross-tier interference (CTI) creates a distinct impact on the system performance. This paper studies the uplink (UL) interference at FAP caused by approaching macrocell users (MUEs). It is noted that the CTI is more significant to the closed subscriber group (CSG) femtocells. We propose an incentive mechanism (IM) for CSG femtocells to alleviate the UL interfference from approaching MUEs, thus preventing the femtocell users performance from degrading and protecting the neighbor FAPs that might also suffer from the UL interference. Meanwhile, the macrocell also benefits from the IM, in terms of energy saving and UL spectral efficiency. Simulation results show that close to the ideal performance when no CTI presents can be achieved with IM, demonstrating that the proposed scheme is very effective in dealing with uplink CTI.","PeriodicalId":333610,"journal":{"name":"2012 IEEE 75th Vehicular Technology Conference (VTC Spring)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114403511","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

Handover Methods Considering Channel Conditions of Multiple Aggregated Carriers 考虑多聚合载波信道条件的切换方法

2012 IEEE 75th Vehicular Technology Conference (VTC Spring) Pub Date : 2012-05-06 DOI: 10.1109/VETECS.2012.6240001

Mingju Li, L. Liu, X. She, Lan Chen

引用次数: 1

2-Step QRM-MLBD Using Detection Ordering for Single-Carrier Transmission 基于检测排序的单载波传输2步QRM-MLBD

2012 IEEE 75th Vehicular Technology Conference (VTC Spring) Pub Date : 2012-05-06 DOI: 10.1109/VETECS.2012.6240210

K. Temma, Tetsuya Yamamoto, F. Adachi

引用次数: 1

A New MIMO Detection Algorithm Based on the Gaussian Graphical Model 一种新的基于高斯图模型的MIMO检测算法

2012 IEEE 75th Vehicular Technology Conference (VTC Spring) Pub Date : 2012-05-06 DOI: 10.1109/VETECS.2012.6239967

M. Teeti, Yingzhuang Liu, Jun Sun

引用次数: 1

Joint Mode Selection and Power Allocation Scheme for Power-Efficient Device-to-Device (D2D) Communication 低功耗设备对设备(D2D)通信的联合模式选择和功率分配方案

2012 IEEE 75th Vehicular Technology Conference (VTC Spring) Pub Date : 2012-05-06 DOI: 10.1109/VETECS.2012.6240196

Minchae Jung, Kyuho Hwang, Sooyong Choi

{"title":"Joint Mode Selection and Power Allocation Scheme for Power-Efficient Device-to-Device (D2D) Communication","authors":"Minchae Jung, Kyuho Hwang, Sooyong Choi","doi":"10.1109/VETECS.2012.6240196","DOIUrl":"https://doi.org/10.1109/VETECS.2012.6240196","url":null,"abstract":"This paper proposes a power-efficient mode selection and power allocation scheme in device-to-device (D2D) communication system as an underlay coexistence with cellular networks. The proposed scheme is performed based on the exhaustive search of all possible mode combinations of the devices which consist of the mode indices for all devices in the system. Specifically, the proposed scheme consists of two steps. First, we calculate the optimal power with respect to the maximum power-efficiency for all possible modes of each device. Since the power-efficiency is not a concave function for the transmission power, we obtain the suboptimal solution by using the concavity of the lower and upper bound for the power-efficiency. The powerefficiencies for all possible modes of each device are obtained by the suboptimal power allocation in the first step. In the second step, we select a mode sequence which has the maximal power-efficiency among all possible mode combinations of the devices based on the obtained power-efficiencies in the first step. Then we can jointly obtain the suboptimal transmission power and the mode maximizing the power-efficiency. The proposed suboptimal scheme for the power allocation and mode selection performs close to the upper bound with respect to the power-efficiency. The simulation results also show that the proposed scheme outperforms the conventional schemes with respect to the power-efficiency and system capacity.","PeriodicalId":333610,"journal":{"name":"2012 IEEE 75th Vehicular Technology Conference (VTC Spring)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128352262","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: 190

A Low-Complexity CDD-Based Frequency Selective Scheduling with Efficient Feedback for Downlink OFDMA Systems 基于低复杂度cdd的OFDMA下行系统有效反馈频率选择调度

2012 IEEE 75th Vehicular Technology Conference (VTC Spring) Pub Date : 2012-05-06 DOI: 10.1109/VETECS.2012.6240065

Yu-Fan Chen, W. Sheen, Li-Chun Wang

引用次数: 1

Downlink Radio Resource Management for LTE-Advanced System with Combined MU-MIMO and Carrier Aggregation Features 结合MU-MIMO和载波聚合特性的LTE-Advanced系统下行无线电资源管理

2012 IEEE 75th Vehicular Technology Conference (VTC Spring) Pub Date : 2012-05-06 DOI: 10.1109/VETECS.2012.6239968

H. T. Nguyen, I. Kovács

引用次数: 11

A Reliable Collaborative Spectrum Sensing Scheme Based on the ROCQ Reputation Model for Cognitive Radio Networks 一种基于认知无线网络ROCQ信誉模型的可靠协同频谱感知方案

2012 IEEE 75th Vehicular Technology Conference (VTC Spring) Pub Date : 2012-05-06 DOI: 10.1109/VETECS.2012.6240349

M. Zhou, Hui-fang Chen, Lei Xie, Kuang Wang

{"title":"A Reliable Collaborative Spectrum Sensing Scheme Based on the ROCQ Reputation Model for Cognitive Radio Networks","authors":"M. Zhou, Hui-fang Chen, Lei Xie, Kuang Wang","doi":"10.1109/VETECS.2012.6240349","DOIUrl":"https://doi.org/10.1109/VETECS.2012.6240349","url":null,"abstract":"Linear combination-based collaborative spectrum sensing, in which a coefficient is used to weight each cognitive radio (CR) user's sensing result in the linear fusion process at the central controller, is an effective mechanism to solve the fading and hidden terminal problem in cognitive radio networks (CRNs). For a reliable scheme, it is important to distinguish whether the CR user is reliable or not. In this paper, we proposed a collaborative spectrum sensing scheme based on the ROCQ reputation management model for CRNs. In the proposed scheme, each CR user has a reputation degree used to calculate its coefficient in the linear fusion process, and the reputation degree is initialized and adjusted by the central controller according to each CR user's sensing result, sensing correctness and report consistency. Simulation results show that our proposed scheme alleviates the corrupted sensing problem resulting from the destructive channel conditions between the primary transmitter and CR users. Moreover, compared to the optimal linear fusion scheme, the detection performance of our proposed scheme is approximately same while it requires no instantaneous SNRs. And the convergence of the reputation degree adjusting method also performs well.","PeriodicalId":333610,"journal":{"name":"2012 IEEE 75th Vehicular Technology Conference (VTC Spring)","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121204696","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

On the Impact of Sleep Modes and BW Variation on the Energy Consumption of Radio Access Networks 睡眠模式和BW变化对无线接入网能耗的影响

2012 IEEE 75th Vehicular Technology Conference (VTC Spring) Pub Date : 2012-05-06 DOI: 10.1109/VETECS.2012.6240161

V. Suryaprakash, A. Fehske, A. F. D. Santos, G. Fettweis

引用次数: 8