{"title":"An Energy-Efficient User Association Scheme Based on Robust Optimization in Ultra-Dense Networks","authors":"Chenming Ma, Fangfang Liu, Zhimin Zeng, Shulun Zhao","doi":"10.1109/ICCChinaW.2018.8674525","DOIUrl":"https://doi.org/10.1109/ICCChinaW.2018.8674525","url":null,"abstract":"In ultra-dense networks, due to the diversity of content requested by users, the traffic demand of each user is actually uncertain. User association schemes based on exact traffic demand seem to be outdated. With economic and operational considerations and environmental issues, energy efficiency has now become a key pillar of communication network design. Therefore, we propose an energy-efficient user association scheme based on robust optimization, which improves the stability of association and the energy efficiency of the system. First, a robust optimization model for user association scheme is designed in ultra-dense network deployments. In this model, we construct an uncertainty set of bandwidth to describe the uncertainty of the user traffic demand. Then we solve the association matrix through an iterative user association algorithm to maximize system energy efficiency. The simulation results show that the proposed user association scheme has better energy efficiency performance than the signal to interference plus noise ratio (SINR)-based user association scheme.","PeriodicalId":201746,"journal":{"name":"2018 IEEE/CIC International Conference on Communications in China (ICCC Workshops)","volume":"246 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131759059","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 Optimized Symmetric Accumulated Cross-Correlation Method of Parameter Estimation for ISAR Motion Compensation","authors":"Jiayin Xue, Xiao Han, Qinyu Zhang","doi":"10.1109/ICCChinaW.2018.8674497","DOIUrl":"https://doi.org/10.1109/ICCChinaW.2018.8674497","url":null,"abstract":"Motion compensation (MOCOMP) based on parameter estimation of the moving target has a strong influence on inverse synthetic aperture radar (ISAR) imaging quality. In this paper, an optimized symmetric accumulated cross-correlation method (OSACCM) of parameter estimation for translational MOCOMP is proposed. It performed an optimization on the computational complexity, and discussed the determination of the optimal accumulation number. Simulation results verified the proposed method achieved a better balance between the computational cost and the estimation accuracy compared with other similar methods.","PeriodicalId":201746,"journal":{"name":"2018 IEEE/CIC International Conference on Communications in China (ICCC Workshops)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128148147","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}
Weijia Han, Yu Wang, Di Tang, Ronghui Hou, Xiao Ma
{"title":"Study of the Symbol Error Rate/Bit Error Rate in Non-orthogonal Multiple Access (NOMA) Systems","authors":"Weijia Han, Yu Wang, Di Tang, Ronghui Hou, Xiao Ma","doi":"10.1109/ICCChinaW.2018.8674475","DOIUrl":"https://doi.org/10.1109/ICCChinaW.2018.8674475","url":null,"abstract":"Recently, the non-orthogonal multiple access (NOMA) and the related power division multiple access (PDMA) techniques have attracted broad attentions, since they could efficiently improve the throughput of current networks. In NOMA/PDMA, parallel data from different information streams (or services) are encoded and modulated concurrently and then are superposed together for transmission. As a result, it is difficult to analyze the related symbol error rate (SER) and bit error rate (BER) which play a key role in system control, e.g., power allocation. To circumvent such an issue, we derive both SER and BER given by closed-form expressions in conditions of Gray coding and quadrature phase shift keying (QPSK) modulation. According to our outcomes, it is shown that SER and BER could be reduced efficiently, when the information streams are processed with Gray coding jointly. Furthermore, it is also indicated that the jointly Gray coding could improve the independence among the signals which composite a superposition signal. Consequently, our results are helpful to improve the performance of the downlink transmission in NOMA/PDMA.","PeriodicalId":201746,"journal":{"name":"2018 IEEE/CIC International Conference on Communications in China (ICCC Workshops)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124088312","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":"A Game Theory Scheme Combined with the Interference Region in Cellular D2D Heterogeneous Networks","authors":"Ting Zhong, Tao Peng, Yating Zhang","doi":"10.1109/ICCChinaW.2018.8674513","DOIUrl":"https://doi.org/10.1109/ICCChinaW.2018.8674513","url":null,"abstract":"The cellular D2D heterogeneous network takes advantage of proximity gain and hop gain of D2D communication, which can greatly improve the performance of the entire network. The actual network imposes an ultra-reliable and low-latency requirement for communications. Therefore, this paper proposes a set of joint power control and resource allocation distributed solutions. It consists of two parts. In order to guarantee the quality-of-service (QoS) of cellular primary users and scheduled D2D users, the pricing-based game scheme is used. In order to achieve the low-latency requirement, the link scheduling scheme based on the interference graph matrix within the D2D network is proposed. Simulations have shown that compared with the pure game theory scheme, this scheme can significantly reduce delay and thus achieve ultra-reliable and low-latency requirements.","PeriodicalId":201746,"journal":{"name":"2018 IEEE/CIC International Conference on Communications in China (ICCC Workshops)","volume":"221 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117115038","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":"Dynamic QoS-Aware Resource Allocation for Narrow Band Internet of Things","authors":"Wei Chen, Heli Zhang, Hong Ji, Xi Li","doi":"10.1109/ICCChinaW.2018.8674494","DOIUrl":"https://doi.org/10.1109/ICCChinaW.2018.8674494","url":null,"abstract":"Abstract-Narrow Band Internet of Thing(NB-IoT) is 3GPP’s cellular technology designed for large-scale deployment of machine-type communications(MTC). NB-IoT can provide better indoor coverage, support of a massive number of low-throughput MTC equipment(MTCEs) with lower energy consumption on a narrow bandwidth of 180kHz. An important challenge to be addressed in NB-IoT is servicing a massive number of MTCEs while satisfying the quality of service (QoS) of the MTCEs. In this paper, a dynamic joint spectrum and slot QoS-Aware resource allocation algorithm is proposed for overcoming the challenge above. Specifically, in order to get better performance and increase spectrum utilization, we divide the overall equipment into two types which are delay sensitive(DS) equipment and non-delay sensitive (NON-DS) equipment according to QoS requirement. Then we formulate a joint sub-carrier and slot allocation problem to maximize the number of MTCEs satisfying the QoS. Moreover, simulation results show that the proposed algorithm could significantly increases the number of successful serviced equipment and achieves a good wireless resource utilization.","PeriodicalId":201746,"journal":{"name":"2018 IEEE/CIC International Conference on Communications in China (ICCC Workshops)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117184921","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":"A Universal Receiver for Uplink NOMA Systems","authors":"Xiangming Meng, Yiqun Wu, Chao Wang, Yan Chen","doi":"10.1109/ICCChinaW.2018.8674476","DOIUrl":"https://doi.org/10.1109/ICCChinaW.2018.8674476","url":null,"abstract":"Given its capability in efficient radio resource sharing, non-orthogonal multiple access (NOMA) has been identified as a promising technology in 5G to improve the system capacity, user connectivity, and scheduling latency. A dozen of uplink NOMA schemes have been proposed recently and this paper considers the design of a universal receiver suitable for all potential designs of NOMA schemes. Firstly, a general turbo-like iterative receiver structure is introduced, under which, a universal expectation propagation algorithm (EPA) detector with hybrid parallel interference cancellation (PIC) is proposed (EPA in short). Link-level simulations show that the proposed EPA receiver can achieve superior block error rate (BLER) performance with implementation friendly complexity and fast convergence, and is always better than the traditional codeword level MMSE-PIC receiver for various kinds of NOMA schemes.","PeriodicalId":201746,"journal":{"name":"2018 IEEE/CIC International Conference on Communications in China (ICCC Workshops)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126360227","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":"R-CNN Object Detection Inference With Deep Learning Accelerator","authors":"Yuxin Qian, Hongli Zheng, Dazhi He, Zhexi Zhang, Zongpu Zhang","doi":"10.1109/ICCChinaW.2018.8674519","DOIUrl":"https://doi.org/10.1109/ICCChinaW.2018.8674519","url":null,"abstract":"The explosively increasing demands of high-speed data applications have brought massive access requirements to various mobile devices. As integrating with artificial intelligence and neural network, the mobile device industry is often more concerned with faster inference with lower power consumption, bringing deep learning inference acceleration to the spotlight. In this paper, we perform a neural network inference merging R-CNN, an object detection model, into a deep learning accelerator architecture. It is a brand new implementation of neural network on embedded system hardware IP-cores of edge computation. On one hand, based on the embedded system environment, we implement the image pre-processing with region proposal algorithm and image post-processing with NMS method. On the other hand, we perform the feature computation with the deep learning accelerator through optimized software and hardware configurations. Through this method, we solve the problem of time-consuming in the computation of neural network layers and give a precise and real-time prediction of object detection. Our R-CNN inference achieves impressive results with 1.9 to 2.6 times higher performance compared with other inference processors.","PeriodicalId":201746,"journal":{"name":"2018 IEEE/CIC International Conference on Communications in China (ICCC Workshops)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132290287","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":"Dynamic Offloading Scheduling Scheme for MEC-enabled Vehicular Networks","authors":"Hansong Wang, Xi Li, Hong Ji, Heli Zhang","doi":"10.1109/ICCChinaW.2018.8674508","DOIUrl":"https://doi.org/10.1109/ICCChinaW.2018.8674508","url":null,"abstract":"The incorporation of mobile edge computing (MEC) into vehicular networks is an inspiring approach to meet the explosive vehicular services demands. The mobile vehicles could execute the computing tasks locally or offload to the nearby MEC servers. However, the mobility of the vehicles brings great challenges to finish the offloading before the vehicles moving out of the coverage of original connected MEC servers. To avoid interruption in the offloading process, we investigate the problem and propose a dynamic offloading scheduling scheme for MEC-enabled vehicular networks. The limited resources and variable vehicle speeds are taken into consideration. The whole offloading task is partitioned into small task units (TUs). Then in every cell with respective MEC servers, the optimal offloading ratio and assigned TUs are derived according to the practical constraints like moving speed, cell coverage and transmit data rate. The proposed scheduling scheme is adaptive to the changes of the vehicles’ speeds and the wireless transmission environment. Simulation results show that the proposed scheme has a good performance in total offloading time and energy efficiency.","PeriodicalId":201746,"journal":{"name":"2018 IEEE/CIC International Conference on Communications in China (ICCC Workshops)","volume":"131 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114616264","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":"Two-Layer Beamforming for Virtual Cell in Ultra Dense Network","authors":"Xiusha An, Changyin Sun, Fan Jiang","doi":"10.1109/ICCChinaW.2018.8674511","DOIUrl":"https://doi.org/10.1109/ICCChinaW.2018.8674511","url":null,"abstract":"Virtual cell can be viewed as an effective way to solve the challenges in the ultra-dense network (UDN), however it suffers from severe and complex interference with the increase of cell density. In this paper, we exploit the similarity of interference channel among users, and assume a two-layer beamforming scheme to eliminate both intra-cell and inter-cell interference. To ensure the feasibility of the two-layer beamforming in UDN, we adopt a strategy to jointly optimize the virtual cell selection and user scheduling based on the interference channel similarity. Different from the user group schemes exploiting the channel similarity of users, we extend this similarity concept to the case of user grouping by interference channel. Analysis and simulation results conducted in virtual cell scenario confirm the improvements of the proposed scheme in complexity and performance aspects.","PeriodicalId":201746,"journal":{"name":"2018 IEEE/CIC International Conference on Communications in China (ICCC Workshops)","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116030611","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":"Practical Power Allocation Schemes for Cooperative Relay Networking with NOMA","authors":"Jaeho Choi, Wei Duan, Haiyang Yu, Jinjuan Ju","doi":"10.1109/ICCChinaW.2018.8674496","DOIUrl":"https://doi.org/10.1109/ICCChinaW.2018.8674496","url":null,"abstract":"In this paper, cooperative relay networks with non-orthogonal multiple access (CRN-NOMA) is analyzed, with a view to designing a near-optimal power allocation (PA) strategy. Like other next generation wireless technologies, spatially multiplexed transmissions are achieved by relay nodes which enable decode-and-forward (DF) relaying of a new superposition code after reception from the source. The proposed PA scheme carries the caveat that it cannot be classically validated because it is only one kind of approximation conjecture. Results indicate that the sum-rate (SR) performance of the proposed scheme is nearly optimal at a higher signal-to-noise ratio (SNR) with negligible performance loss.","PeriodicalId":201746,"journal":{"name":"2018 IEEE/CIC International Conference on Communications in China (ICCC Workshops)","volume":"35 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121013631","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}