Publications of Zheng Chang [back to homepage]

 

   Book Chapter:

1.      Zheng Chang and Tapani Ristaniemi. Collaborative Mobile Clusters: An Energy-Efficient Emerging Paradigm. book chapter in "Broadband Wireless Access Networks for 4G: Theory, Application, and Experimentation" (Invited), IGI Global, Dec. 2013.

2.       Zhenyu Zhou, Zheng Chang, Chen Xu and Tapani Ristaniemi, ”Energy-Efficient Context-Aware Resource Allocation in Ultra-Dense Small Cells,” Interference Mitigation and Energy Management in 5G Heterogeneous Cellular Networks, (Invited), IGI Global, 2016.

   Editorial:

1.      N. Zhao, X. Liu, F. R. Yu, Y. Chen, T. Han, and Zheng Chang, Cloud and Big Data-based Next-generation Cognitive Radio Networks. IEEE Access, 2019.

2.      X. Du, H.-H. Chen, L. Zhu, J. Li, and Zheng Chang: ”Security and Privacy in Wireless IoT,” IEEE Wireless Commun., vol. 25, no. 6, pp. 10-11, 2018.

3.      J. Huang, Zheng Chang, C. Wang, Y. Qian, H. Gharavi and Z. Li, “Enabling Technologies for Smart Internet of Things,” vol. 56, no. 9, IEEE Communications Magazine, pp. 12-13, Sep. 2018.

4.      J. Huang, Zheng Chang, M. Atiquzzaman, Z. Han and W. Saad, “Special Issue on Wireless Energy Harvesting for Internet of Things,”  IEEE Internet of Things Journal, vol. 5, no. 4, pp. 2580-2584, 2018.

5.      N. Zhao, J. Li, T. Han, Zheng Chang, and L. Fan, ”Wireless Caching Aided 5G Networks,” Wireless Communications and Mobile Computing, 2018.

6.      N. Zhao, F. Rechard Yu, H. Wang, T. Q. Duong, and Zheng Chang, ”Exploiting the Benefits of Interference in Wireless Networks: Energy Harvesting and Security,” IEEE Access, 2018.

7.      Zheng Chang and Z. Zhou, ”Content Caching and Distribution in Wireless Networks,” IEEE MMTC Communications Frontier, vol. 13, no. 1,  2018.

8.      Zheng Chang and Z. Yan, ”Security and Privacy of Cloud Computing,” IEEE MMTC Communications Frontier, vol. 12, no. 2, March. 2017.

   Journal Papers:

1.      F. Jameel, R. Duan, Zheng Chang, Aleksi Liljemark, T. Ristaniemi and R. Jantti, “Applications of Backscatter Communications for Healthcare Networks,” IEEE Network, accepted, 2019.

2.      F. Jameel, Zheng Chang, J. Huang and T. Ristaniemi ”Internet of Autonomous Vehicles: Architecture, Features, and Socio-Technological Challenges,” IEEE Wireless Communications, accepted, 2019.

3.      J. Huang, C. Huang, C. Xiong, Zheng Chang, Y. Zhao and Q. Zhao,”An Energy-Efficient Communication Scheme for Collaborative Mobile Clouds in Content Sharing: Design and Optimization,” IEEE Transactions on Industrial Informatics , accpeted, 2019.

4.      Zheng Chang, D. Zhang, T. Hamalainen, Z. Han and T. Ristaniemi, ”Incentive Mechanism for Resource Allocation in Wireless Virtualized Networks with Multiple Infrastructure Providers,”IEEE Transactions on Mobile Computing,  2019.

5.      A. Samanta, and Zheng Chang, ”Adaptive Service Offloading for Revenue Maximization in Mobile Edge Computing with Delay-Constraint,” IEEE Internet of Things Journal,  vol. 6, no. 2, pp. 3864-3872, April 2019.

6.      Z. Zhou, J. Feng, Zheng Chang and X. Shen, ”Energy-Efficient Edge Computing Service Provisioning for Vehicular Networks: A Consensus ADMM Approach,” IEEE Transactions on Vehicular Technology, vol. 68, no. 5, pp. 5087-5099, May 2019.

7.      J. Huang, C. Xiong, and Zheng Chang, ”Multi-hop D2D Communications with Network Coding: From A Performance Perspectivet,” IEEE Transactions on Vehicular Technology,  vol. 68, no. 3, pp. 2270-2282, March 2019.

8.      X. Guo, L. Liu, Zheng Chang, and T. Ristaniemi, ”Joint Optimization of Energy and Delay for Computation Offloading in Cloudlet-assisted Mobile Cloud Computing,” Wireless Networks, vol. 25, no. 4, pp. 2027-2040, 2019.

9.      X. Guo, T. Huang, Y. Zhang and Zheng Chang, ”Collaborative Content Downloading in VANETs with Fuzzy Comprehensive Evaluation,” Symmetry, vol. 11, no. 4, 2019

10.  F. Jameel, S. Wyne, J. Syed, and Zheng Chang, ”Propagation Channels for mmWave Vehicular Communications: State-of-the-art and Future Research Directions ,” IEEE Wireless Communications, vol. 26, no. 1, pp. 144-150, Jan. 2019.

11.  Z. Zhou, C. Xu, Zheng Chang, and S. Mumtaz, ”BEGIN: Big Data Enabled Energy-Efficient Vehicular Edge Computing,” IEEE Communications Magazine,  vol. 56, no. 12, pp. 82-89, Dec. 2018..

12.  J. Hou, F. Hu, B. Wang, Zheng Chang, ”Bidirectional Wireless Information and Power Transfer With an Energy Accumulating Relay,” IEEE Access, vol. 6, pp. 57257-57266, 2018.

13.  Zheng Chang, Z. Wang, X. Guo, C. Yang, Z. Han and T. Ristaniemi, ”Distributed Resource Allocation for Energy Efficiency in OFDMA Multi-cell Networks with Wireless Power Transfer,” IEEE Journal on Selected Areas in Communications, vol. 37, no. 2, pp. 345-356, Feb. 2019.

14.  Zheng Chang, L. Lei, H. Zhang, T. Ristaniemi, S. Chatzinotas, B. Ottersten, and Z. Han, ”Secure and Energy-Efficient Resource Allocation for Multiple-Antenna NOMA with Wireless Power Transfer,” IEEE Transactions on Green Communications and Networking, accepted, 2018.

15.  Y. Gu, Zheng Chang, M. Pan, L. Song, and Z. Han, ”Joint Radio and Computational Resource Allocation in IoT Fog Computing, ”IEEE Transactions on Vehicular Technology, vol. 67, no. 8, pp. 7475-7484, August 2018.

16.  Zheng Chang, L. Lei, Z. Zhou, S. Mao and T. Ristaniemi, ”Learn to Cache: Machine Learning for Network Edge Caching in the Big Data Era,” IEEE Wireless Commnunications, vol. 25, no. 3, pp. 28-35, June 2018.

17.  Z. Zhou, J. Feng, C. Zhang, Zheng Chang, Y. Zhang and K. Huq, ”SAGECELL: Software-Defined Space-Air-Ground Integrated Moving Cells,” IEEE Communications Magazine, vol. 56, no. 8, pp. 92-99, Aug. 2018.

18.  L. Liu, Zheng Chang, and X. Guo, ”Socially-aware Dynamic Computation Offloading Scheme for Fog Computing System with Energy Harvesting Devices,” IEEE Internet of Things Journal, vol. 5, no. 3, pp. 1869-1879, June 2018.

19.  L. Liu, Zheng Chang, X. Guo, S. Mao and T. Ristaniemi, ”Multi-objective Optimization for Computation Offloading in Fog Computing,” IEEE Internet of Things Journal, vol. 5, no. 1, pp. 283-294, Feb. 2018.

20.  Zheng Chang, S. Zhou, T. Ristaniemi and Z. Niu, ”Collaborative Mobile Clouds: An Energy Efficient Paradigm for Content Sharing,” IEEE Wireless Communications, vol. 25, no. 2, pp. 186-192, April 2018..

21.  Zheng Chang, Z. Zhou, S. Zhou, T. Ristaniemi and T. Chen, ”Towards Serviceoriented 5G: Virtualizing the Networks for Everything-as-a-Service,” IEEE Access, 2018.

22.  Zheng Chang, S. Zhang, Z. Wang, X. Guo, Z. Han and T. Ristaniemi, ”Energy Efficient Optimization for Wireless Power Enabled Massive MIMO System with Imperfect Channel Estimation,” IET Communications, accepted, 2018.

23.  A. Ostovar and Zheng Chang, ”Reducing Power Consumption of Wireless Networks through Collaborative DMC Mobile Clusters,” Wireless Person Communications, vol. 98. no. 2, 2018.

24.  A. Ostovar and Zheng Chang, ”Optimization of Cooperative Spectrum Sensing via Optimal Power Allocation in Cognitive Radio Networks,” IET Communications, 2017. [pdf]

25.  D. Zhang, Zheng Chang, T. Hamalainen and F. Richard Yu, ”Double Auction Based Multi-Flow Transmission in Software-Defined and Virtualized Wireless Networks,” IEEE Transactions on Wireless Communications, vol. 16, no. 10, pp. 8390- 8404, Oct. 2017.

26.  Zheng Chang, X. Hou, X. Guo, T. Ristaniemi and Z. Han, ”Secure and Energy Efficient Resource Allocation for Wireless Power Enabled Full-/Half-Duplex Multiple-Antenna Relay Systems,” IEEE Transactions on Vehicular Technology, vol. 65, no. 12, pp. 11208-11219, Dec. 2017.

27.  Y. Hu, H. Li, Zheng Chang, and Z. Han, ”End-to-End Backlog and Delay Bound Analysis for Multi-Hop Vehicular Ad Hoc Networks,”IEEE Transactions on Wireless Communications, vol. 16, no. 10, pp. 6808-6821, 2017.

28.  Zheng Chang, Z. Wang, X. Guo, Z. Han and T. Ristaniemi, ”Energy-Efficient Resource Allocation for Wireless Powered Massive MIMO System with Imperfect CSI,” IEEE Transactions on Green Communications and Networking, vol. 1, no.2, June 2017. [pdf]

29.  Y. Hu, Zheng Chang, H. Li, T. Ristaniemi and Z. Han, ”Service Provisioning and User Association for Heterogeneous Wireless Railway Networks,” IEEE Transactions on Communications, vol. 65, no. 7, July 2017. [pdf]

30.  Y. Hu, H. Li, Zheng Chang, J. Li, and Z. Han, "Scheduling Strategy for Multimedia Heterogeneous High-Speed Train Networks," IEEE Transactions on Vehicular Technology, vol. 66, no. 4, pp. 3265-3279, April 2017. [pdf]

31.  Z. Zhou, C. Sun, R. Shi, Zheng Chang, S. Zhou, and Y. Li, ”Robust Energy Scheduling in Vehicle-to-Grid Networks,” IEEE Network, vol. 31, no. 2, pp. 30-37, March 2017. [pdf]

32.  Zheng Chang, Z. Han and T. Ristaniemi, ”Energy Efficient Optimization for Wireless Virtualized Small Cell Networks with Large Scale Multiple Antenna,” IEEE Transactions on Communications, vol. 65, no. 4, April 2017. [pdf]

33.  H. K. Nguyen, Y. Zhang, Zheng Chang, and Z. Han, ”Parallel and Distributed Resource Allocation with Minimum Traffic Disruption for Network Virtualization,” IEEE Transactions on Communications, vol. 65, no. 3, March 2017. [pdf]

34.  C. Xu, C. Gao, Z. Zhou, Zheng Chang, Y. Jia, ”Social Network-Based Content Delivery in Device-to-Device Underlay Cellular Networks Using Matching Theory,” IEEE Access, vol. 5, 2017.  [pdf]

35.  Zheng Chang, J. Gong, Y. Li, Z. Zhou, T. Ristaniemi, G. Shi, Z. Han and Z. Niu, ”Energy Efficient Resource Allocation for Wireless Power Transfer Enabled Collaborative Mobile Clouds,” IEEE Journal on Selected Areas in Communications, vol. 34, no. 12, Dec. 2016. [pdf]

36.  Zheng Chang, Jie Gong, Tapani Ristaniemi and Zhisheng Niu, ”Energy Efficient Resource Allocation and User scheduling for Collaborative Mobile Clouds with Hybrid Receivers,” IEEE Transactions on Vehicular Technology, vol. 65, no. 12, Dec. 2016. [pdf]

37.  Xijuan Guo, Liqing Liu, Zheng Chang, and Tapani Ristaniemi, ”Data Offloading and Task Allocation for Cloudlet-assisted Ad Hoc Mobile Clouds,”  Wireless Networks, 2016, DOI :10.1007/s11276-016-1322-z. [pdf]

38.  Zheng Chang, Qianqian Zhang, Xijuan Guo and Tapani Ristaniemi, "Energy Efficient Resource Allocation for OFDMA Two-Way Relay Networks with imperfect CSI, " EURASIP Journal on Wireless Communications and Networking, 2015:225. [pdf]

39.  Zheng Chang, Tapani Ristaniemi, and Zhu Han, "Queueing Game For Spectrum Access in Cognitive Radio Networks, " IEEE Communications Letters, vol. 19, no. 11, Nov. 2015. [pdf]

40.  Zhenyu Zhou, Mianxiong. Dong, K. Ota, and Z. Chang, "Energy-Efficient Context-Aware Matching for Resource Allocation in Ultra-Dense Small Cells, " IEEE Access Journal, vol. 3, pp.1849-1860, 2015. [pdf]

41.  Zheng Chang, Tapani Ristaniemi and Zhisheng Niu, "Radio Resource Allocation for Collaborative OFDMA Relay Networks with Imperfect Channel State Information," IEEE Transactions on Wireless Communications, Vol.13, No. 5, pp 2824-2835, May 2014. [pdf]

42.  Zheng Chang, Xiaoyu Zhang, Xijuan Guo and Yang Liu, "Fairness Aware Rate Adaptation and Proportional Scheduling for IEEE 802.11 WLANs Using FSE," China Communications, 2015. [pdf]

43.  Zheng Chang and Tapani Ristaniemi, "Asymmetric Radio Resource Allocation Scheme for OFDMA Wireless Networks with Collaborative Relays,"  Wireless Networks, Vol.19, No.5, 2013, DOI: 10.1007/s11276-012-0490-8.

44.  Fengyu Cong, Igor Kalyakin, Zheng Chang and Tapani Ristaniemi, Analysis on Subtracting Projection of Extracted Independent Components from EEG Recordings, Biomedizinische Technik - Biomedical Engineering, Vol. 56, No. 4, pp 223-234,2011.

45.  X. Guo, H. Zhang, Z. Chang, ”Image thresholding algorithm based on image gradient and fuzzy set distance,” ICIC Express Letters, vol. 4, no. 3, 2010.

    Conference Papers:

1.      Zheng Chang, et al ”Optimal Buffer Resource Allocation in Wireless Caching Networks,” IEEE SPAWC, Cannes, France, 2019.

2.      X. Mi, C. Yang, and Zheng Chang, ” Multi-Resource Management for Multi-Tier Space Information Networks: A Cooperative Game,” IEEE IWCMC, Tangier, Morocco, June 2019

3.      F. Jameel, W. Khan, Zheng Chang, T. Ristaniemi, and J. Liu “Secrecy Analysis and Learning-based Optimization of Cooperative NOMA SWIPT Systems,”  IEEE ICC,  Shanghai, China, May 2019.

4.      Y. Zhu, Y. Hu, Zheng Chang and A. Schmeink, “Throughput Maximization of Low-Latency Communication with imperfect CSI in Finite Blocklength Regime” IEEE WCNC, Marrakech, Morocco, Apr. 2019.

5.      A. Samanta, Zheng Chang, and Z. Han, ” Latency-Oblivious Distributed Task Scheduling for Mobile Edge Computing,” IEEE Globecom, Abu Dhabi, UAE, Dec. 2018.

6.      F. Jameel, S. Wyne, J. N. Syed, Zheng Chang, and T. Ristaniemi, “Outage Analysis of Relay-aided Non-orthogonal Multiple Access with Partial Relay Selection,” IEEE Globecom workshop, Abu Dhabi, UAE, Dec. 2018.

7.      L. Lei, Zheng Chang, Y. Hu, T. Ristaniemi, Y. Yuan, and S. Chatzinotas, ”Energy-Efficient Resource Optimization with Wireless Power Transfer for Secure NOMA Systems,” IEEE ICCC, Beijing, China, Aug. 2018.

8.      F. Jameel, Zheng Chang, and T. Ristaniemi, ”Intercept Probability Analysis of Wireless Powered Relay System in κ−µ fading,” IEEE VTC’18-spring, Porto, Portugal, June 2018.

9.      B. Wang, Zheng Chang, Z. Zhou and T. Ristaniemi, ”Reliable and Privacy-preserving Task Recomposition for Crowdsensing in Vehicular Fog Computing,” IEEE VTC’18-spring, Porto,  Portugal,  June 2018.

10.  Z. Zhou, F. Xiong, C. Xu, Zheng Chang, S. Mumtaz and Y. Zhang, ”Autonomous Power Line Inspection based on Industrial Unmanned Aerial Vehicles: An Energy Efficiency Perspective,” IEEE VTC’18-spring, Porto, Portugal, June 2018.

11.  D. Zhang, Zheng Chang, T. Hamalainen and W. Gao, ”A Contract-based Resource Allocation Mechanism in Wireless Virtualized Network,” IEEE Infocom workshop, April 2018.

12.  Z. Zhou, P. Liu, Zheng Chang, C. Xu, and Y. Zhang, ” Energy-efficient Workload Offloading and Power Control in Vehicular Edge Computing,” IEEE WCNC workshop, Barcelona, Spain, April 2018.

13.  Y. Hu, Zheng Chang, Z. Zhou, C. Xu and T. Ristaniemi, ”Socially-Aware Content Delivery for Device-to-Device Underlay Wireless Networks,” IEEE WCNC workshop, Barcelona, Spain, April 2018.

14.  Zheng Chang, C. Jing, X. Guo, Z. Han and T. Ristaniemi, ”Distributed Resource Allocation for Wireless Virtualized Networks with Caching and Energy Harvesting,” IEEE WCNC’18, Barcelona, Spain, April 2018.

15.  Zheng Chang, Z. Zhou, T. Ristaniemi and Z. Niu, ”Energy Efficient Optimization for Computation Offloading in Fog Computing System,” IEEE Globecom’17, Singapore, Dec. 2017. (Best conference paper of IEEE TCGCC 2017)

16.  Z. Zhou, C. Xu, J. Feng, Zheng Chang, and Z. Han, ”Two-Stage Matching for Energy-Efficient Resource Management in D2D Cooperative Relay Communications,” IEEE Globecom’17, Singapore, Dec. 2017.

17.  Zheng Chang, C. Jing, X. Guo, and Y. Jia ”Distributed Resource Allocation for Wireless Virtualized Energy Harvesting Small Cell Networks,” IEEE 23nd Asia- Pacific Conference on Communications (APCC), Perth, Australia, Dec. 2017.  (Best paper award)

18.  L. Dai, Y. Jia, L. Liang, S. Fu, and Zheng Chang, ”Metric and Control of System Fairness in Heterogeneous Networks,” IEEE 23nd Asia-Pacific Conference on Communications (APCC), Perth, Australia, Dec. 2017.

19.  Zheng Chang, M. Meng, X. Guo, and T. Ristaniemi, "Matching-based Socially-Aware Data Caching for D2D Communications," IEEE/CIC ICCC, Qingdao, China, Oct. 2017.

20.  Y. Hu, H. Li, Zheng Chang, R. Hou, and Z. Han, ”End-to-End Backlog and Delay Bound Analysis Using Martingale for Internet of Vehicles,” IEEE Conference on Standards for Communications & Networking, Helsinki, Finland, September 2017. (Invited paper)

21.  B. Wang, T. Zhao, Zheng Chang, T. Ristaniemi, and G. Liu, ”3D Matrix-based Visualization System of Association Rules,” IEEE International Symposium on Recent Advances of Computer and Information Technologies, Helsinki, Finland, August 2017.

22.  L. Liu, Zheng Chang, X. Guo and T. Ristaniemi, ”Multi-objective Optimization for Computation Offloading in Mobile-edge Cloud Computing,” IEEE ISCC’17, Greece, July 2017.

23.  Z. Chang, Z. Wang, X. Guo, Z. Han and T. Ristaniemi, ”Energy Efficient and Distributed Resource Allocation for Wireless Powered OFDMA Multi-cell Networks,” IEEE WiOpt’17 workshop, Paris, France, May 2017.

24.  X. Chen, Z. Han, Zheng Chang, G. Xue, H. Zhang, and M. Bennis, ”Adapting Downlink Power in Fronthaul-Constrained Hierarchical Software-Defined RANs,” IEEE WCNC’17, San Francisco, CA, March 2017.

25.  Z. Chang, Z. Wang, X. Guo, Z. Han, and T. Ristaniemi, "Energy Efficient Resource Allocation for Wireless Power Transfer Enabled Multi-user Massive MIMO System, " IEEE Globecom’16, Washington, DC, Dec. 2016

26.  D. Zhang, Z. Chang, F. Richard Yu, X. Chen, and T. Hamalainen, "A Double Auction Approach for Virtual Resource Allocation in SDN-based Cellular Network," IEEE PIMRC’16, Valencia, Spain, Sep. 2016.

27.  T. Yang, F. Cong, Zheng Chang, Y. Liu, T. Ristaniemi, and H. Li, ”Individual Independent Component Analysis on EEG: Event-related Responses vs. Difference Wave of Deviant and Standard Responses,” International Symposium on Neural Networks, Saint Petersburg, Russia, July 2016.

28.  Z. Zhou, G. Ma, C. Xu, and Z. Chang, ”A Game Theoretical Approach for Green Power Allocation in Energy-Harvesting Device-to-Device Communications,” IEEE VTC’16-Spring, Nanjing, China, May 2016.

29.  D. Zhang, Z. Chang, and T. Hamalainen, ”Reverse Combinatorial Auction based Resource Allocation in Heterogeneous Software Defined Network,” IEEE VTC’16-Spring, Nanjing, China, May 2016.

30.  Z. Chang, Y. Gu, Z. Han, X. Chen and T. Ristaniemi, ”Context-Aware Data Caching for 5G Heterogeneous Small Cells Networks ,” IEEE International Conference on Communications(ICC’16), Kuala Lumpur, Malaysia, 2016.

31.  Z. Chang, X. Hou, X. Guo, and T. Ristaniemi, ”Energy Efficient Resource Allocation for Secure OFDMA Relay Systems with Eavesdropper,” IEEE ICC’16, Kuala Lumpur, Malaysia, 2016.

32.  Z. Zhou, G. Ma, C. Xu, Z. Chang, and Tapani Ristaniemi, ”Energy-Efficient Resource Allocation in Cognitive D2D Communications: A Game-Theoretical and Matching Approach,” IEEE ICC’16, Kuala Lumpur, Malaysia, 2016.

33.  Z. Chang, L. Zhang, X. Guo, Z. Zhou and T. Ristaniemi, "User-Cell Association in Heterogenous Small Cell Networks: A Context-Aware Approach, " IEEE International Conference on Communications in China (ICCC’15), Shenzhen, China, Nov. 2015.

34.  Z. Zhou, M. Dong, Z. Chang and B. Gu, "Combined Centralized and Distributed Resource Allocation for Green D2D Communications, " IEEE ICCC’15, Shenzhen, China, Nov. 2015.

35.  D. Zhang, Z. Chang, M. Zolotukhin and T. Hamalainen, "Energy Efficient Resource Allocation in Heterogeneous Software Defined Network: A Reverse Combinatorial Auction Approach, " IEEE ICCC’15, Shenzhen, China, Nov. 2015.

36.  Z. Chang, Qianqian Zhang, Xijuan Guo, Zhenyu Zhou and Tapani Ristaniemi, "Energy Efficient Resource Allocation for OFDMA Two-Way Relay Networks with Channel Estimation Error,"  IEEE Milcom’15, Tampa, FL, Oct. 2015.

37.  Z. Chang, K. Zhu, Z. Zhou, and T. Ristaniemi, "Service Provisioning with Multiple Service Providers in 5G Ultra-dense Small Cell Networks, " IEEE PIMRC’15, Hong Kong, China, Sep. 2015.

38.  Z. Chang, J. Gong, Z. Zhou, T. Ristaniemi, and Z. Niu, "Resource Allocation and Data Offloading for Energy Effciency in Wireless Power Transfer Enabled Collaborative Mobile Clouds," IEEE INFOCOM'2015 Workshop, Hong Kong, China, April 2015.

39.   Z. Chang, J. Gong, T. Ristaniemi, S. Zhou and Z. Niu, "Energy Efficient Power Allocation for Collaborative Mobile Clouds with Information and Power Transfer," 1st International Conference on 5G for Ubiquitous Connectivity, Levi, Finland, Nov. 2014.

40.   Z. Chang, Yang Liu, Fengyu Cong, Xijuan Guo and Zhenyu Zhou, "Multi-domain Collaborative Spectrum Sensing in Presence of Multiple Primary Users," IEEE International Conference on Communications Systems, Macau, China, Nov. 2014.

41.   Z. Chang, T. Ristaniemi and Z. Niu, "Energy Efficient User Grouping and Scheduling For Collaborative Mobile Cloud," IEEE International Conference on Communications (ICC'14), Sydney, Australia, June 2014.

42.    Z. Chang, J. Gong and T. Ristaniemi, "Energy Efficient Resource Allocation for Collaborative Mobile Cloud with Hybrid Receiver," IEEE Conference on Computer Communications (INFOCOM'14) workshop, Toronto, Canada, April 2014.

43.   Z. Chang and T. Ristaniemi, "Power Efficient Multicast Transmission Framework with QoS Guarantee," Proc. of 2013 International Conference on Wireless Communications and Signal Processing (WCSP'13), Hangzhou, China, Oct. 2013.

44.   Z. Chang and T. Ristaniemi, "Energy Efficiency of Unicast Supported Multicast with QoS Guarantee," Proc. of IEEE International Conference on Communication in China (ICCC'13), 2013.

45.   Z. Chang and T. Ristaniemi, Asymmetric Resource Allocation for Collaborative Relay OFDMA Networks with Imperfect CSI, Proc. of IEEE International Conference on Communication in China (ICCC'13), Xi’an, China, August 2013.

46.   Z. Chang and T. Ristaniemi, "Energy Efficiency of Using Multicast and Unicast in Collaborative OFDMA Mobile Cluster," 77th IEEE Vehicular Technology Conference (IEEE VTC'13-spring), Dresden, Germany, June 2013.

47.   Z. Chang and T. Ristaniemi, "Energy Efficiency of Collaborative OFDMA Mobile Cluster," 10th IEEE Consumer Communication and Networking Conference( IEEE CCNC'13), Las Vegas, U.S. Jan. 2013. (Best paper finalist)

48.   Z. Chang and T. Ristaniemi, "Asymmetric Resource Allocation for OFDMA Networks with Collaborative Relays," Proc. of 10th IEEE Consumer Communication and Networking Conference ( IEEE CCNC'13), Las Vegas, U.S. Jan. 2013. (Best paper finalist)

49.   Z. Chang and T. Ristaniemi, "Reducing Energy Consumption via Cooperative OFDMA Mobile Cluster," Proc. of 17th IEEE International Workshop on Computer-Aided Modeling Analysis and Design of Communication Links and Networks (CAMAD’12), Barcelona, Spain, Sep.2012.

50.   Z. Chang and T. Ristaniemi, "Resource Allocation for Cooperative Relay-assisted OFDMA Networks with Imperfect CSI," Proc. of IEEE Military Communication Conference (MILCOM'12), Orlando, Florida, US.  Nov. 2012.

51.   Z. Chang, O. Alanen, E. H. Ong, and J. Kneckt, "Enhanced Channel Scanning Schemes for Next Generation WLAN system", Proc. of  IEEE International Conference on Communication in China (ICCC'12), Beijing, China, August 2012.

52.   Z. Chang, O. Alanen, T. Huovinen, T. Nihtila, E. H. Ong, J. Kneckt and T. Ristaniemi, "Performance Analysis of IEEE 802.11ac DCF with Hidden Nodes",IEEE 75th Vehicular Technology Conference (VTC-spring 2012), Yokohama, Japan, May 2012.

53.   Z. Chang and T. Ristaniemi, "Radio Resource Allocation for Cooperative Relay-assisted OFDMA Wireless Networks" , Proc. of IEEE International Workshop on Cross-layer Design(IWCLD), Rennes, France, Nov. 2011.

54.   Eng Hwee Ong, J. Kneckt, O. Alanen, Z. Chang, T. Huovinen and T.Nihtila, "IEEE 802.11ac: Enhancements for Very High Throughput WLANs", Proc. of  IEEE Symposium on Personal, Indoor, Mobile and Radio Communications (PIMRC’11), Toronto, Canada, Sep. 2011

55.   Z. Chang, N. Ermolova, O. Tirkkonen and T. Ristaniemi, "OFDM Interference Analysis with Dirty RF", International Conference in Pervasive and Embedded Computing and Communication Systems (PECCS), Vilamoura, Portugal. March 2011.

    Thesis:

·          Ph.D. thesis:  Spectrum and Energy Efficient Solutions For OFDMA Collaborative Wireless Networks, University of Jyvaskyla, Finland, 2013.

·          M.Sc. (Tech.) thesis: OFDM Interference Analysis with Dirty RF, Helsinki University of Technology, Espoo, Finland, 2009

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