Pan Yuan, Yunpeng Cheng, Weiwei Yang, Kaihua Wang, Heng Wang
{"title":"Physical layer security enhancement for cooperative SC-FDE systems","authors":"Pan Yuan, Yunpeng Cheng, Weiwei Yang, Kaihua Wang, Heng Wang","doi":"10.1109/WCSP.2016.7752679","DOIUrl":"https://doi.org/10.1109/WCSP.2016.7752679","url":null,"abstract":"In this paper, a novel joint relay and destination selection scheme is proposed to enhance the secrecy performance in cooperative single carrier frequency domain equalization (SC-FDE) systems with multiple relays and multiple destinations in the present of a group of eavesdroppers. In particular, we derive the exact and asymptotic closed-form expressions for the secrecy outage probability (SOP) and the asymptotic results demonstrate that in sufficient high SNRs region of main channels, the achievable secrecy diversity gain is L1QK, i.e., the product of the channel tap L1, the number of destination nodes Q and the number of relay nodes K. Analytical results indicate that our proposed joint selection scheme can achieve better secrecy performance compared with that in previous work.","PeriodicalId":158117,"journal":{"name":"2016 8th International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"218 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115590239","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}
{"title":"An energy-efficient design for multihop relay network adopting CC-HARQ scheme","authors":"Junmei Han, Songhu Ge, Y. Xi, Jibo Wei","doi":"10.1109/WCSP.2016.7752479","DOIUrl":"https://doi.org/10.1109/WCSP.2016.7752479","url":null,"abstract":"This paper investigates the energy-efficient design of a multihop relay network adopting the Chase Combining based Hybrid Automatic Repeat reQuest (CC-HARQ) scheme with sum power constraint from a cross-layer perspective. We aim at maximizing the energy efficiency (EE) in the multihop relay network by jointly optimizing the payload length and average transmission energy per bit over all hops, with no limitation on the total number of (re)transmissions times. The theoretical findings are verified by simulations and the impacts of various parameters, e.g., the modulation and coding scheme (MCS) levels, channel gains and transmission distance, on EE are studied in detail. The results demonstrate that significant energy saving can be achieved by the proposed joint optimum algorithm.","PeriodicalId":158117,"journal":{"name":"2016 8th International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122328536","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}
{"title":"Energy-efficient resource allocation in C-RAN with fronthaul rate constraints","authors":"Yuan Sun, Chunguo Li, Yongming Huang, Luxi Yang","doi":"10.1109/WCSP.2016.7752729","DOIUrl":"https://doi.org/10.1109/WCSP.2016.7752729","url":null,"abstract":"Cloud Radio Access Network (C-RAN) is a novel mobile network architecture which can solve lots of challenges in the next generation mobile communication system, including the demand for higher energy efficiency(EE). In C-RAN EE research field, most of recent work focuses on systematic energy saving and ignores the needs of users. To improve the performance of C-RAN under fronthaul capacity constraint, signal quantization techniques have been developed. But how to introduce `quantization' into C-RAN EE field is still an open issue. Motivated by this, in this paper, based on informational-optimal Gaussian quantization, we intend to design the suitable algorithms to maximize user-centric EE in the uplink communication of an orthogonal frequency division multiple access (OFDMA) based C-RAN. In the special case of single user and single RRH, we propose a joint optimization algorithm to maximize the uplink user-centric EE by optimizing power and fronthaul rate allocation. In the extended general case of multi-user and multi-RRH, we propose a Modified Particle Swarm Optimization(M-PSO) algorithm to solve the non-linear and non-convex issue for simplicity. Our simulation results show the proposed algorithms can improve the user-centric EE obviously compared with other optimal algorithms.","PeriodicalId":158117,"journal":{"name":"2016 8th International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"193 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123014646","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}
{"title":"Matroid theory based broadcast retransmission in distributed storage network","authors":"Guojie Hu, Kui Xu, Youyun Xu","doi":"10.1109/WCSP.2016.7752585","DOIUrl":"https://doi.org/10.1109/WCSP.2016.7752585","url":null,"abstract":"In conventional distributed storage networks, backbone firstly sends the packets that needed by the users randomly to existed servers. Then backbone broadcasts the packets uncoded to the users. This phase is defined as systematic transmission phase. Due to channel distortion and noise, different users may lost different packets. Thus, each user needs to feedback its packet loss state and could constitute a state feedback matrix (SFM) in the side of the backbone. After this, instead of retransmission by the backbone, the binary network coded or original packets are sent from servers to the users, and each user can only receive a packet from one server within a time slot. In this paper, we consider backbone network only sends the packets to the servers after receiving the SFM from all users, and we assume that the time needed for the transmissions from backbone to the servers can be ignored. According to the matroid theory, we propose an algorithm that decide the set of packets that needed to send to the different servers in order to decrease the server resource consumption and utilize the servers to further decrease the number of retransmissions.","PeriodicalId":158117,"journal":{"name":"2016 8th International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129807320","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}
Nan Cheng, Ran Zhang, Yiqun Ge, Wuxian Shi, Qifan Zhang, Xuemin Shen
{"title":"Encoder and list decoder of Reed-Solomon kernel based polar codes","authors":"Nan Cheng, Ran Zhang, Yiqun Ge, Wuxian Shi, Qifan Zhang, Xuemin Shen","doi":"10.1109/WCSP.2016.7752615","DOIUrl":"https://doi.org/10.1109/WCSP.2016.7752615","url":null,"abstract":"In this paper, we propose the encoding and list decoding method of polar codes based on the four-dimensional Reed-Solomon (RS-4) kernel. In specific, an encoding table based method is employed to reduce the computational complexity of both encoder and decoder. In addition, a simplified method to update log-likelihood ratios (LLRs) which employs additions instead of exponential calculations is also proposed to further increase the decoding speed. In addition, we present a method to construct RS-4 polar codes using genie-aided simulations, where the symbol channel capacity is determined by the number of decoding errors. Through simulations, we show the decoding performance of the RS-4 polar codes and compare it with the binary polar codes.","PeriodicalId":158117,"journal":{"name":"2016 8th International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"146 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128433851","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}
Ke Zhao, Min Sheng, Junyu Liu, Yanpeng Dai, Lei Liu, Yan Shi, Jiandong Li
{"title":"Graph-based joint mode selection and resource allocation scheme for D2D and cellular hybrid network using SCMA","authors":"Ke Zhao, Min Sheng, Junyu Liu, Yanpeng Dai, Lei Liu, Yan Shi, Jiandong Li","doi":"10.1109/WCSP.2016.7752515","DOIUrl":"https://doi.org/10.1109/WCSP.2016.7752515","url":null,"abstract":"Enabling device-to-device (D2D) communication in cellular network is shown to be a promising candidate in the future fifth generation (5G) wireless network. Specifically, the hybrid architecture leads to flexible and efficient resource allocation for cellular users and D2D users, thereby enhancing utilization of spectrum resources. However, if not properly handled, mutual interference will be significantly raised with the proliferation of devices, which bottlenecks the performance of the hybrid system. In this paper, joint mode selection and resource allocation is considered for a sparse code multiple access (SCMA) enabled uplink cellular network. Targeting at maximizing system sum rate, we formulate a joint optimization problem, which, however, is shown to be a mixed-integer nonlinear programming (MINLP) problem. To solve the problem, we propose a graph-based joint mode selection and resource allocation (GMR) algorithm. GMR is an interference-aware algorithm. In particular, when GMR is applied, D2D users reuse SCMA resources only when the interference level to cellular users is below a predefined threshold. Otherwise, dedicated resources are allocated to D2D users to avoid the overwhelming mutual interference. Simulation results have confirmed the efficacy of GMR in enhancing spectrum efficiency and system sum rate in the hybrid system.","PeriodicalId":158117,"journal":{"name":"2016 8th International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130643592","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}
{"title":"Energy efficient Cooperative spectrum sensing with twice selection of nodes","authors":"Yanping Li, Yuan Gao, Yibin Tang, Changping Zhu","doi":"10.1109/WCSP.2016.7752577","DOIUrl":"https://doi.org/10.1109/WCSP.2016.7752577","url":null,"abstract":"In this paper, we propose a cooperative spectrum sensing method where the nodes detecting the primary user and those sending the sensing results are respectively selected in order to achieve energy efficiency. We formulate the problem of node selection and derive the optimized solution. The results show that the proposed method saves the energy compared to the case where the node selection is not taken into account.","PeriodicalId":158117,"journal":{"name":"2016 8th International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121647945","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}
L. Zou, Le Wang, Chao Xing, Jingwu Cui, Shengmei Zhao
{"title":"Turbulence mitigation with MIMO equalization for orbital angular momentum multiplexing communication","authors":"L. Zou, Le Wang, Chao Xing, Jingwu Cui, Shengmei Zhao","doi":"10.1109/WCSP.2016.7752455","DOIUrl":"https://doi.org/10.1109/WCSP.2016.7752455","url":null,"abstract":"Atmospheric turbulence (AT) induced crosstalk can significantly impair performance of free-space optical (FSO) communication link using orbital angular momentum (OAM) multiplexing. OAM-multiplexed communication is equivalent to the Multiple-input Multiple-output(MIMO) system. And MIMO equalization is a good method to mitigate the crosstalk existing in MIMO system. Based on the reason above, we propose a MIMO equalization turbulence mitigation scheme in an OAM-multiplexed FSO communication link. The numerical simulation results show that MIMO equalization mitigation method can mitigate the effects of AT. The Quaternary Phase Shift Keying (QPSK) signal constellation and bit-error ratio(BER) performances are analyzed.","PeriodicalId":158117,"journal":{"name":"2016 8th International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"21 10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113962823","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}
{"title":"Fast automatic link establishment: A new metric and the value of spectrum prediction","authors":"Ling Yu, Jin Chen, Guoru Ding, Zhiqiang Qin","doi":"10.1109/WCSP.2016.7752645","DOIUrl":"https://doi.org/10.1109/WCSP.2016.7752645","url":null,"abstract":"Automatic link establishment (ALE) is one of the important technologies in HF communication. One of the indicators to measure the performance of an ALE system is the linking time, which includes channel switching, spectrum sensing, and trying to call three periods. Asynchronous mode has been widely used for its simple operation. When establishing an link, the station sorts all the channels and selects the best available channel based on link quality analysis (LQA) matrix, which consists of scores of channels. The traditional LQA algorithm only considers a single factor, such as SNR. In this paper, a new LQA matrix combined with spectrum prediction is proposed to reduce the linking time. It is a new metric to evaluate channels. Spectrum prediction technology has been developed in order to solve the problem of time and energy consumption of spectrum sensing. Based on previous occupancy information, the statistical state parameters of each channel can be obtained. Compared with the traditional algorithm, the new algorithm balances channel state and quality parameters with multiplicative relation. The simulation results show that the linking time is reduced and the performance is improved using new algorithm, and the spectrum prediction can further reduce linking time.","PeriodicalId":158117,"journal":{"name":"2016 8th International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124372063","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}
{"title":"Fairness-aware sub-optimal relay selection for physical-layer security in AF relaying networks","authors":"Haoyu Du, J. Ge, Chensi Zhang, Peijie Tian","doi":"10.1109/WCSP.2016.7752736","DOIUrl":"https://doi.org/10.1109/WCSP.2016.7752736","url":null,"abstract":"In this paper, we first investigate the physical-layer security in wireless communication with multiple eavesdroppers. Considering the importance of the fairness among multiple relays, this paper presents the sub-optimal relay selection protocol based on cumulative distribution function (CDF) of the ratio of channel coefficients, which satisfies the security requirement at the same time. We analyze relay fairness by obtaining the expression of relay selection probability and numerical results prove the strict fairness among multiple relays. Meanwhile, the expression of the intercept probability is also presented.","PeriodicalId":158117,"journal":{"name":"2016 8th International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124377071","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}