2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)最新文献_第2页

Energy-efficient coordinated beamforming with individual data rate constraints 具有单个数据速率约束的节能协调波束形成

2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC) Pub Date : 2013-12-11 DOI: 10.1109/PIMRC.2013.6666291

Yang Li, Yafei Tian, Chenyang Yang

{"title":"Energy-efficient coordinated beamforming with individual data rate constraints","authors":"Yang Li, Yafei Tian, Chenyang Yang","doi":"10.1109/PIMRC.2013.6666291","DOIUrl":"https://doi.org/10.1109/PIMRC.2013.6666291","url":null,"abstract":"Coordinated beamforming has been optimized to maximize the sum rate under the transmit power constraints, or to minimize the transmit power under the data rate constraints. In this paper, we study coordinated beamforming to maximize the energy efficiency (EE) of multi-cell multi-antenna systems meanwhile ensuring the individual data rate requirement of each user. To find a solution of the non-convex optimization problem for the precoding design, we construct a convex subset of the original constraint set and a quasi-concave lower bound of the EE. Then, we propose an iterative algorithm to maximize the lower bound of the EE within the convex subset. We evaluate the EE of the proposed algorithm through simulations under different data rate requirements, user locations, and cell-edge signal-to-noise ratios. The results demonstrate that the proposed precoder is much more energy-efficient than the transmit power minimization precoder when the circuit power consumption dominates, and always outperforms two interference-free transmission schemes with the optimized transmit power toward maximizing the EE.","PeriodicalId":210993,"journal":{"name":"2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117258133","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

Exploiting multiple access points diversity gain in the multi-access wireless network 利用多接入无线网络中的多接入点分集增益

2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC) Pub Date : 2013-12-11 DOI: 10.1109/PIMRC.2013.6666418

Jiandong Li, Honghao Ju, Yan Long, Xiaoniu Yang

引用次数: 0

A dynamic pairing diversity with interference exploitation for high throughput 4G systems 高吞吐量4G系统中具有干扰利用的动态配对分集

2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC) Pub Date : 2013-12-11 DOI: 10.1109/PIMRC.2013.6666364

Wahyu Pramudito, E. Alsusa

{"title":"A dynamic pairing diversity with interference exploitation for high throughput 4G systems","authors":"Wahyu Pramudito, E. Alsusa","doi":"10.1109/PIMRC.2013.6666364","DOIUrl":"https://doi.org/10.1109/PIMRC.2013.6666364","url":null,"abstract":"This paper proposes and analyzes a new cooperative diversity technique that combines users pairing and interference exploitation for enhancing the uplink transmission performance in uplink OFDMA systems suitable for 4G technology. The underlying principle is to pair users on the basis of best interuser channel by utilizing low transmit power communication in the unlicensed band to exchange data symbols. Then, each pair remap their combined symbols according to a predefined rule such that they transmit the same constellation using single dimensional OFDMA to ensure that the signals of each pair combine constructively at the destination. As well as achieving a diversity order of two, the proposed technique attains further performance enhancements by exploiting co-channel interference. The impact of the proposed technique on various modulation orders is considered in this paper. The performance is assessed through Monte Carlo simulation and accurate mathematical analysis. It will be shown that the results from both models closely match and demonstrate that significant BER reduction as well as throughput enhancement are obtained relative to other uplink OFDMA transmission techniques.","PeriodicalId":210993,"journal":{"name":"2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124858934","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

Secure opportunistic scheduling with transmit antenna selection 安全机会调度与发射天线选择

2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC) Pub Date : 2013-12-11 DOI: 10.1109/PIMRC.2013.6666180

A. P. Shrestha, K. Kwak

引用次数: 7

Performance analysis of multiple sample based improved energy detector in collaborative CR networks 协同CR网络中基于多样本的改进型能量检测器性能分析

2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC) Pub Date : 2013-12-11 DOI: 10.1109/PIMRC.2013.6666610

Ajay Singh, M. Bhatnagar, R. Mallik

{"title":"Performance analysis of multiple sample based improved energy detector in collaborative CR networks","authors":"Ajay Singh, M. Bhatnagar, R. Mallik","doi":"10.1109/PIMRC.2013.6666610","DOIUrl":"https://doi.org/10.1109/PIMRC.2013.6666610","url":null,"abstract":"In the existing literature, a single sample based improved energy detector has been analyzed for multiple antennas based cooperative spectrum sensing. In this paper, we derive the expressions of the probability of false alarm and missed detection of multiple antenna based dual-hop cooperative spectrum sensing scheme which uses multiple samples of the primary user's signal in the improved energy detector. By minimizing the total error rate (weighted sum of the probability of missed detection and probability of false alarm), we derive a closed-form solution of optimal number of CRs required for dual-hop cooperation. It is shown by simulations that this generalized scheme significantly outperforms the conventional energy detector based spectrum sensing, while keeping quality-of-service in desired limits. A multi-hop cognitive radio network containing multiple antenna based CRs and using an improved energy detector with multiple samples is also analyzed in this paper. It is inferred by analysis and simulation that the error performance of the multi-hop cognitive relaying can be significantly improved by using multiple antennas and improved energy detector.","PeriodicalId":210993,"journal":{"name":"2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125711915","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

Design of non-uniform antenna arrays for robust millimeter-wave LOS MIMO communications 用于稳健毫米波LOS MIMO通信的非均匀天线阵列设计

2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC) Pub Date : 2013-12-11 DOI: 10.1109/PIMRC.2013.6666359

Liang Zhou, Y. Ohashi

引用次数: 8

Multilevel coded linear physical-layer network coding with extended mapping in Galois Field for Rayleigh fading two-way relay channels 基于伽罗瓦域扩展映射的瑞利衰落双向中继信道多电平编码线性物理层网络编码

2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC) Pub Date : 2013-12-11 DOI: 10.1109/PIMRC.2013.6666111

Dong Fang, A. Burr

引用次数: 1

A traffic light extension to Cell Transmission Model for estimating urban traffic jam 交通信号灯对小区传输模型的扩展，用于估计城市交通阻塞

2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC) Pub Date : 2013-12-11 DOI: 10.1109/PIMRC.2013.6666579

Bo Xie, Ming Xu, Jérôme Härri, Yingwen Chen

引用次数: 17

An adaptive ABS-CoMP scheme in LTE-Advanced heterogeneous networks LTE-Advanced异构网络中的自适应ABS-CoMP方案

2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC) Pub Date : 2013-12-11 DOI: 10.1109/PIMRC.2013.6666618

Wei Luo, Yusheng Ji, Aihuang Guo

{"title":"An adaptive ABS-CoMP scheme in LTE-Advanced heterogeneous networks","authors":"Wei Luo, Yusheng Ji, Aihuang Guo","doi":"10.1109/PIMRC.2013.6666618","DOIUrl":"https://doi.org/10.1109/PIMRC.2013.6666618","url":null,"abstract":"As one of the key technical challenges in long term evolution (LTE)-Advanced heterogeneous networks (HetNets) is intercell interference coordination, many different schemes, such as coordinated multipoint (CoMP) and almost blank subframe (ABS) schemes, have been proposed in this field. Different cells are pushed to cooperate to eliminate intercell interference in CoMP coordinated beamforming, but performance is heavily dependent on the quality of channels. ABS schemes allow highpower cells to transmit almost blank subframes, and avoid interference with low-power cell edge users, which will in turn result in reduced high-power cell throughput as cost. An adaptive ABS-CoMP scheme in an LTE-Advanced HetNet is proposed, which combines both the ABS and CoMP coordinated beamforming schemes to eliminate intercell interference, and adaptive transmits signals in different ways. It is assumed to improve system throughput and mitigate signaling overhead and computational complexity. The results from simulations demonstrated that the proposed scheme outperformed the ABS and CoMP schemes, and achieved considerable system throughput gains in Config.4b scenarios defined by 3GPP.","PeriodicalId":210993,"journal":{"name":"2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122639178","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: 14

Knowledge management framework for robust cognitive radio operation in non-stationary environments 非固定环境下稳健认知无线电操作的知识管理框架

2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC) Pub Date : 2013-12-11 DOI: 10.1109/PIMRC.2013.6666665

F. Bouali, O. Sallent, J. Pérez-Romero

{"title":"Knowledge management framework for robust cognitive radio operation in non-stationary environments","authors":"F. Bouali, O. Sallent, J. Pérez-Romero","doi":"10.1109/PIMRC.2013.6666665","DOIUrl":"https://doi.org/10.1109/PIMRC.2013.6666665","url":null,"abstract":"To increase cognitive radio operation efficiency, this paper proposes a new knowledge management functional architecture, based on the fittingness factor concept, for supporting spectrum management in non-stationary environments. It includes a reliability tester module that detects, based on hypothesis testing, relevant changes in suitability levels of spectrum resources to support a set of heterogeneous applications. These changes are captured through a set of advanced statistics stored in a knowledge database and exploited by a proactive spectrum management strategy to assist both spectrum selection and spectrum mobility functionalities. The results reveal that the proposed reliability tester is able to disregard the changes due to the intrinsic randomness of the radio environment and to efficiently detect actual changes in interference conditions of spectrum pools. Thanks to this support, the proposed spectrum management strategy exhibits substantial robustness when the environment becomes non-stationary, obtaining performance improvements of up to 75% with respect to the reference case that does not make use of the reliability tester functionality.","PeriodicalId":210993,"journal":{"name":"2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122644374","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