2015 International Symposium on Wireless Communication Systems (ISWCS)最新文献

Iterative widely linear equalization for MIMO SC-FDMA systems MIMO SC-FDMA系统的迭代广义线性均衡

2015 International Symposium on Wireless Communication Systems (ISWCS) Pub Date : 2015-08-28 DOI: 10.1109/ISWCS.2015.7454401

J. Zhong, Gaojie Chen, P. Xiao

引用次数: 1

Radio resource allocation for full-duplex multicarrier wireless systems 全双工多载波无线系统的无线电资源分配

2015 International Symposium on Wireless Communication Systems (ISWCS) Pub Date : 2015-08-28 DOI: 10.1109/ISWCS.2015.7454410

Mohammed Al-Imari, M. Ghoraishi, P. Xiao

{"title":"Radio resource allocation for full-duplex multicarrier wireless systems","authors":"Mohammed Al-Imari, M. Ghoraishi, P. Xiao","doi":"10.1109/ISWCS.2015.7454410","DOIUrl":"https://doi.org/10.1109/ISWCS.2015.7454410","url":null,"abstract":"Full-duplex technology has the potential to double the wireless system spectral efficiency by enabling simultaneous transmission and reception at the same time on the same frequency. In this paper, we address the subcarrier and power allocation problem for full-duplex system. The problem is coupled between uplink and downlink channels due to the self-interference and inter-user interference. As the problem is non-convex, a suboptimal algorithm is proposed based on the Frank-Wolfe approach. To this end, a subcarrier and power allocation is first performed for the downlink channel, and then the uplink resource allocation is represented as a D.C. (difference of two convex functions) problem. An approximation is used to convert the D.C. problem into two convex sub-problems, which are solved iteratively to produce a lower bound approximation for the non-convex objective. Simulation results show that the algorithm achieves fast convergence regardless of different initialization points, and can significantly improve the full-duplex performance comparing to the equal resource allocation approach. Furthermore, the full-duplex system with the proposed algorithm can achieve significant gains in spectral efficiency, that reach up to 48%, comparing to half-duplex system.","PeriodicalId":383105,"journal":{"name":"2015 International Symposium on Wireless Communication Systems (ISWCS)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126761487","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: 12

Receiver and resource allocation optimization for uplink NOMA in 5G wireless networks 5G无线网络上行NOMA的接收机和资源分配优化

2015 International Symposium on Wireless Communication Systems (ISWCS) Pub Date : 2015-08-28 DOI: 10.1109/ISWCS.2015.7454317

Mohammed Al-Imari, P. Xiao, M. Imran

{"title":"Receiver and resource allocation optimization for uplink NOMA in 5G wireless networks","authors":"Mohammed Al-Imari, P. Xiao, M. Imran","doi":"10.1109/ISWCS.2015.7454317","DOIUrl":"https://doi.org/10.1109/ISWCS.2015.7454317","url":null,"abstract":"Non-Orthogonal Multiple Access (NOMA) is a promising multiple access technique for 5G wireless networks. In uplink NOMA, more than one user can use the same subcarrier, which increases the system throughput and fairness. Due to the non-orthogonality among the users, joint processing is required at the receiver to retrieve the users' signals. In this paper, we propose solutions to optimize the receiver and the radio resource allocation of uplink NOMA. First, we propose an iterative multiuser detection and decoding (MUDD) to improve the performance of the multiuser detector by utilizing the information derived by the channel decoder. In addition, a novel subcarrier and power allocation algorithm is proposed for NOMA scheme that maximizes the users' weighted sum-rate. The link-level performance evaluation has shown that the proposed iterative MUDD approach brings about 4.5 dB and 9.8 dB performance improvements at block error rate equal to 10-2 comparing to conventional multiuser detection, for QPSK and 16QAM modulations, respectively. Furthermore, the system-level results show that the proposed resource allocation algorithm achieves the system spectral efficiency upper-bound, making NOMA significantly outperforms OFDMA in terms of spectral efficiency and fairness.","PeriodicalId":383105,"journal":{"name":"2015 International Symposium on Wireless Communication Systems (ISWCS)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114345031","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: 38

Optimum user selection for hybrid-duplex device-to-device in cellular networks 蜂窝网络中混合双工设备对设备的最佳用户选择

2015 International Symposium on Wireless Communication Systems (ISWCS) Pub Date : 2015-08-28 DOI: 10.1109/ISWCS.2015.7454319

Gaojie Chen, Dandan Liang, M. Ghoraishi, P. Xiao, R. Tafazolli

引用次数: 1

Performance analysis of K-best detection with adaptive modulation 自适应调制k -最优检测性能分析

2015 International Symposium on Wireless Communication Systems (ISWCS) Pub Date : 2015-08-26 DOI: 10.1109/ISWCS.2015.7454351

Wenjun Fu, J. Thompson

引用次数: 1

Global throughput maximization of a hybrid unicast-broadcast network for linear services 用于线性业务的混合单播广播网络的全局吞吐量最大化

2015 International Symposium on Wireless Communication Systems (ISWCS) Pub Date : 2015-08-25 DOI: 10.1109/ISWCS.2015.7454316

Pape-Abdoulaye Fam, M. Crussiére, J. Hélard, P. Bretillon, S. Paquelet

引用次数: 7

Impact of clipping on EVM of the predistorted non-linear amplified multicarrier signals 削波对预失真非线性放大多载波信号EVM的影响

2015 International Symposium on Wireless Communication Systems (ISWCS) Pub Date : 2015-08-25 DOI: 10.1109/ISWCS.2015.7454452

A. Cheaito, J. Hélard, M. Crussiére, Y. Louët

引用次数: 4

Hybrid spectrum sensing experimental analysis using GNU radio and USRP for cognitive radio 基于GNU无线电和USRP的认知无线电混合频谱感知实验分析

2015 International Symposium on Wireless Communication Systems (ISWCS) Pub Date : 2015-08-25 DOI: 10.1109/ISWCS.2015.7454395

A. Nafkha, Malek Naoues, Krzysztof Cichon, Adrian Kliks, Babar Aziz

引用次数: 8

Widely linear FRESH receiver for SAIC/MAIC with frequency offsets 用于 SAIC/MAIC 的带频率偏移的宽线性 FRESH 接收器

2015 International Symposium on Wireless Communication Systems (ISWCS) Pub Date : 2015-08-25 DOI: 10.1109/ISWCS.2015.7454402

Rémi Chauvat, P. Chevalier, J. Delmas

{"title":"Widely linear FRESH receiver for SAIC/MAIC with frequency offsets","authors":"Rémi Chauvat, P. Chevalier, J. Delmas","doi":"10.1109/ISWCS.2015.7454402","DOIUrl":"https://doi.org/10.1109/ISWCS.2015.7454402","url":null,"abstract":"Widely linear (WL) receivers are able to fulfill single antenna interference cancellation (SAIC) of one rectilinear (R) (ASK, BPSK) or quasi-rectilinear (QR) (MSK, GMSK, OQAM) co-channel interference (CCI), a function which is operational in GSM handsets in particular. However, in most cases, SAIC technology loses its efficiency if the residual frequency offset (FO) of the CCI is above a very small fraction of the baud rate. It may be the case for airborne communications, due to high differential Doppler shifts. It may also be the case if we try to use SAIC or multiple antenna interference cancellation (MAIC) receivers to mitigate intrinsic inter-carrier interference (ICI) of filter-bank multicarrier waveforms coupled with OQAM constellations (FBMC-OQAM), which are candidate for 5G networks, and for which the ICI FO is equal to 50% of the (real) baud rate. In this context, the purpose of this paper is twofold. The first one is to extend, for an arbitrary propagation channel and from a maximum likelihood sequence estimation (MLSE)-based approach, the SAIC/MAIC concept to R or QR signals with differential FO using WL frequency-shifted (FRESH) filtering. The second one is to analyse both analytically and by simulations the impact of the residual CCI FO on the performance of the proposed SAIC/MAIC receiver.","PeriodicalId":383105,"journal":{"name":"2015 International Symposium on Wireless Communication Systems (ISWCS)","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127064685","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

An energy-efficient resource allocation for optimal downlink coverage in heterogeneous wireless cellular networks 异构无线蜂窝网络中最优下行覆盖的节能资源分配

2015 International Symposium on Wireless Communication Systems (ISWCS) Pub Date : 2015-08-25 DOI: 10.1109/ISWCS.2015.7454318

Quoc-Tuan Vien, T. Le, H. Nguyen, M. Karamanoğlu

{"title":"An energy-efficient resource allocation for optimal downlink coverage in heterogeneous wireless cellular networks","authors":"Quoc-Tuan Vien, T. Le, H. Nguyen, M. Karamanoğlu","doi":"10.1109/ISWCS.2015.7454318","DOIUrl":"https://doi.org/10.1109/ISWCS.2015.7454318","url":null,"abstract":"This paper investigates downlink coverage maximisation in a heterogeneous wireless cellular network (HWCN) taking into account various indoor and outdoor propagation models. By using stochastic geometry modeling of multi-tier cells, the coverage probability of the practical HWCN is firstly derived characterising the impacts of cell density allocation, power allocation at cells, building infrastructures and transmission environment. It is interestingly observed that the increase of cell densities may not result in a higher coverage but causes a higher total power consumption. The coverage optimisation problem is therefore formulated aiming at maximising the coverage probability subject to the constraints on the power available in the HWCN. Specifically, an heuristic cell density allocation algorithm is proposed for the cell allocation at multiple tiers within various propagation models. The proposed scheme is shown to not only achieve a higher coverage region of up to 25% but also save 20% of power consumption when compared to the equal resource allocation mechanism.","PeriodicalId":383105,"journal":{"name":"2015 International Symposium on Wireless Communication Systems (ISWCS)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128950120","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