Enhancing capacity and coverage for heterogeneous cellular systems

The thesis is concerned with capacity and coverage enhancement of OFDMA heterogeneous cellular systems with a specific focus on fractional frequency reuse (FFR), femtocells and amplify-and-forward (AF) relay systems. The main aim of the thesis is to develop new mathematical analysis for the spectral efficiency and outage probability of multi-cells multi-tier systems in diverse traffic, interference and fading scenarios. In the first part of the thesis, a new unified mathematical framework for performance analysis of FFR and soft frequency reuse (SFR) schemes is developed. This leads to new exact expressions of FFR and SFR area spectral efficiency in downlink and uplink scenarios which account for a mixture of frequency reuse factors in a homogeneous cellular system. The mathematical framework is extended to include modelling and performance analysis of FFR systems with elastic data traffic. Further analysis is carried out in relation to the performance of FFR and/or SFR schemes, in terms of energy efficiency and base station cooperation. The new proposed analytical framework can lead to a better understanding and computationally efficient performance analysis of next generation heterogeneous cellular systems. Next generation cellular systems are characterized by an increase in the spatial node density to improve the spectral efficiency and coverage, especially for users at home and at the cell edges. In this regard, relays and femtocells play a major role. Therefore, relays and femocells are the focus of the second part of the thesis. Firstly, we present a new and unified spectral efficiency analysis in dual-hop fixed-gain AF relay systems over generalised interferences models. The generalised interference models are either based on the Nakagami-m fading with arbitrary distance or on spatial Poisson Point Process in case of randomly deployed heterogeneous interferers. The models have been considered separately in the open literature due to the complexity of the mathematical analysis. Secondly, the outage probability is utilised to deduce the femtocell exclusion region for FFR system and a new static resource allocation scheme is proposed for femtocells which improve the capacity.The work presented in the thesis has resulted in the publication of seven scientific papers in prestigious IEEE journals and conferences.

[1]  Bernhard Walke,et al.  Performance analysis of reuse partitioning techniques in OFDMA based cellular radio networks , 2010, 2010 17th International Conference on Telecommunications.

[2]  Tony Q. S. Quek,et al.  Throughput Optimization, Spectrum Allocation, and Access Control in Two-Tier Femtocell Networks , 2012, IEEE Journal on Selected Areas in Communications.

[3]  Khairi Ashour Hamdi,et al.  The impact of the signaling between macrocell base station and femtocell access point on the average transmission power , 2012, 2012 19th International Conference on Telecommunications (ICT).

[4]  Shirley Dennis-Escoffier,et al.  Orthogonal Frequency Division Multiplexing for Wireless Communications , 2006 .

[5]  Jose F. Monserrat,et al.  Mobile and Wireless Communications for IMT-Advanced and Beyond , 2011 .

[6]  Romeo Giuliano,et al.  WiMAX fractional frequency reuse for rural environments , 2008, IEEE Wireless Communications.

[7]  Mohamed-Slim Alouini,et al.  On the performance analysis of composite multipath/shadowing channels using the G-distribution , 2009, IEEE Transactions on Communications.

[8]  Zaher Dawy,et al.  A Survey on Uplink Resource Allocation in OFDMA Wireless Networks , 2012, IEEE Communications Surveys & Tutorials.

[9]  Halim Yanikomeroglu,et al.  Enhancing cell-edge performance: a downlink dynamic interference avoidance scheme with inter-cell coordination , 2010, IEEE Transactions on Wireless Communications.

[11]  Mazen O. Hasna,et al.  Harmonic mean and end-to-end performance of transmission systems with relays , 2004, IEEE Transactions on Communications.

[12]  Caijun Zhong,et al.  Performance analysis of fixed-gain AF dual-hop relaying systems over Nakagami-m fading channels in the presence of interference , 2011, EURASIP J. Wirel. Commun. Netw..

[13]  Salah-Eddine Elayoubi,et al.  Performance Evaluation of Cellular Networks Offering TV Services , 2011, IEEE Transactions on Vehicular Technology.

[14]  Jeffrey G. Andrews,et al.  Analytical Evaluation of Uplink Fractional Frequency Reuse , 2013, IEEE Transactions on Communications.

[15]  Geoffrey Ye Li,et al.  Fundamental trade-offs on green wireless networks , 2011, IEEE Communications Magazine.

[16]  Vivek K. Goyal,et al.  Multiple description coding: compression meets the network , 2001, IEEE Signal Process. Mag..

[17]  Hitoshi Yoshino,et al.  Capacity and Outage Rate of OFDMA Cellular System with Fractional Frequency Reuse , 2010, IEICE Trans. Commun..

[18]  Khairi Ashour Hamdi,et al.  On the Minimum Transmit Power in Cochannel Femtocells , 2012, IEEE Communications Letters.

[19]  H. Suzuki,et al.  A Statistical Model for Urban Radio Propogation , 1977, IEEE Trans. Commun..

[20]  Mohamed-Slim Alouini,et al.  Outage probability of diversity systems over generalized fading channels , 2000, IEEE Trans. Commun..

[21]  Joseph Lipka,et al.  A Table of Integrals , 2010 .

[22]  Xiaodong Wang,et al.  An Efficient Retransmission Strategy for Wireless Scalable Video Multicast , 2012, IEEE Wireless Communications Letters.

[23]  Jing Yang,et al.  On the Capacity of Two-Hop AF Relaying in the Presence of Interference Under Nakagami-m Fading , 2013, IEEE Communications Letters.

[24]  Jeffrey G. Andrews,et al.  Coverage in multi-antenna two-tier networks , 2009, IEEE Transactions on Wireless Communications.

[25]  Li-Chun Wang,et al.  3-Cell Network MIMO Architectures with Sectorization and Fractional Frequency Reuse , 2011, IEEE Journal on Selected Areas in Communications.

[26]  Simone Redana,et al.  Performance Analysis of Relay Site Planning Over Composite Fading/Shadowing Channels With Cochannel Interference , 2013, IEEE Transactions on Vehicular Technology.

[27]  Sofiène Affes,et al.  On the Ergodic Capacity of Amplify-and-Forward Relay Channels with Interference in Nakagami-m Fading , 2013, IEEE Transactions on Communications.

[28]  Iickho Song,et al.  Cooperative Relaying of Superposition Coding with Simple Feedback for Layered Source Transmission , 2013, IEEE Transactions on Communications.

[29]  Jeffrey G. Andrews,et al.  Femtocell networks: a survey , 2008, IEEE Communications Magazine.

[30]  Won Ryu,et al.  Handover between macrocell and femtocell for UMTS based networks , 2009, 2009 11th International Conference on Advanced Communication Technology.

[31]  Alexandre Proutière,et al.  Wireless downlink data channels: user performance and cell dimensioning , 2003, MobiCom '03.

[32]  Juhee Kim,et al.  Fractional frequency reuse-based resource sharing strategy in two-tier femtocell networks , 2012, 2012 IEEE Consumer Communications and Networking Conference (CCNC).

[33]  Chung-Nan Lee,et al.  Layered video multicast using fractional frequency reuse over wireless relay networks , 2012, EURASIP J. Wirel. Commun. Netw..

[34]  Stefania Sesia,et al.  LTE - The UMTS Long Term Evolution, Second Edition , 2011 .

[35]  Khairi Ashour Hamdi,et al.  A Unified Framework for the Analysis of Fractional Frequency Reuse Techniques , 2014, IEEE Transactions on Communications.

[36]  Özgü Alay,et al.  Layered Wireless Video Multicast Using Relays , 2010, IEEE Transactions on Circuits and Systems for Video Technology.

[37]  Valentine A. Aalo,et al.  Serial Amplify-and-Forward Relay Transmission Systems in Nakagami- $m$ Fading Channels With a Poisson Interference Field , 2014, IEEE Transactions on Vehicular Technology.

[38]  Heiko Schwarz,et al.  Overview of the Scalable Video Coding Extension of the H.264/AVC Standard , 2007, IEEE Transactions on Circuits and Systems for Video Technology.

[39]  William H. Tranter,et al.  Principles of Communication Systems Simulation with Wireless Applications , 2004 .

[40]  Laurence B. Milstein,et al.  Superposition coding based cooperative communication with relay selection , 2010, 2010 Conference Record of the Forty Fourth Asilomar Conference on Signals, Systems and Computers.

[41]  Mohamad Assaad.  Optimal Fractional Frequency Reuse (FFR) in Multicellular OFDMA System , 2008, 2008 IEEE 68th Vehicular Technology Conference.

[42]  D. Owen.  Handbook of Mathematical Functions with Formulas , 1965 .

[43]  Arumugam Nallanathan,et al.  Performance Analysis of Two Hop Amplify-and-Forward Systems with Interference at the Relay , 2010, IEEE Communications Letters.

[44]  Satoshi Nagata,et al.  LTE-advanced: an operator perspective , 2012, IEEE Communications Magazine.

[45]  Abraham O. Fapojuwo,et al.  A Survey of Energy Efficient Resource Management Techniques for Multicell Cellular Networks , 2014, IEEE Communications Surveys & Tutorials.

[46]  Sheldon M. Ross,et al.  Introduction to probability models , 1975 .

[47]  Jeffrey G. Andrews,et al.  A Tractable Approach to Coverage and Rate in Cellular Networks , 2010, IEEE Transactions on Communications.

[48]  Khairi Ashour Hamdi,et al.  Capacity of MRC on Correlated Rician Fading Channels , 2008, IEEE Transactions on Communications.

[49]  Rui Chang,et al.  Interference coordination and cancellation for 4G networks , 2009, IEEE Communications Magazine.

[50]  S. Elayoubi,et al.  Performance evaluation of frequency planning schemes in OFDMA-based networks , 2008 .

[51]  Yang Guo,et al.  Scalable Video Multicast in Hybrid 3G/Ad-Hoc Networks , 2011, IEEE Transactions on Multimedia.

[52]  Jeffrey G. Andrews,et al.  Modeling and Analysis of K-Tier Downlink Heterogeneous Cellular Networks , 2011, IEEE Journal on Selected Areas in Communications.

[53]  Jeffrey G. Andrews,et al.  Networked MIMO with clustered linear precoding , 2008, IEEE Transactions on Wireless Communications.

[54]  Harish Viswanathan,et al.  Self-Organizing Dynamic Fractional Frequency Reuse for Best-Effort Traffic through Distributed Inter-Cell Coordination , 2009, IEEE INFOCOM 2009.

[55]  Lajos Hanzo,et al.  Frequency-swapping aided femtocells in twin-layer cellular networks relying on fractional frequency reuse , 2012, 2012 IEEE Wireless Communications and Networking Conference (WCNC).

[56]  Xiaojing Huang,et al.  Performance analysis of soft frequency reuse for inter-cell interference coordination in LTE networks , 2010, 2010 10th International Symposium on Communications and Information Technologies.

[57]  Hyunseung Choo,et al.  A Novel Frequency Planning for Femtocells in OFDMA-Based Cellular Networks Using Fractional Frequency Reuse , 2010, ICCSA.

[58]  Moe Z. Win,et al.  A Mathematical Theory of Network Interference and Its Applications , 2009, Proceedings of the IEEE.

[59]  Andrea J. Goldsmith,et al.  Distortion exponent in MIMO channels with feedback , 2009, 2009 IEEE Information Theory Workshop.

[60]  Mohamed-Slim Alouini,et al.  Digital Communication over Fading Channels: Simon/Digital Communications 2e , 2004 .

[61]  Tony Q. S. Quek,et al.  Energy Efficiency Analysis of Two-Tier Heterogeneous Networks , 2011, EW.

[62]  Caijun Zhong,et al.  Performance Analysis of Dual-Hop AF Systems With Interference in Nakagami-$m$ Fading Channels , 2011, IEEE Signal Processing Letters.

[63]  Haitham S. Hamza,et al.  A Survey on Inter-Cell Interference Coordination Techniques in OFDMA-Based Cellular Networks , 2013, IEEE Communications Surveys & Tutorials.

[64]  Jeffrey G. Andrews,et al.  Coverage in Two-Tier Cellular Networks with Fractional Frequency Reuse , 2011, 2011 IEEE Global Telecommunications Conference - GLOBECOM 2011.

[65]  Asrar U. H. Sheikh,et al.  Indoor mobile radio channel at 946 MHz: Measurements and modeling , 1993, IEEE 43rd Vehicular Technology Conference.

[66]  Marceau Coupechoux,et al.  Optimal Relay Placement in Cellular Networks , 2014, IEEE Transactions on Wireless Communications.

[67]  Moray Rumney.  LTE and the Evolution to 4G Wireless: Design and Measurement Challenges , 2013 .

[68]  Nageen Himayat,et al.  Interference management for 4G cellular standards [WIMAX/LTE UPDATE] , 2010, IEEE Communications Magazine.

[69]  John G. Proakis,et al.  Digital Communications , 1983 .

[70]  John B. Shoven,et al.  I , Edinburgh Medical and Surgical Journal.

[71]  Gregory W. Wornell,et al.  Source-channel diversity approaches for multimedia communication , 2004, International Symposium onInformation Theory, 2004. ISIT 2004. Proceedings..

[72]  Manav R. Bhatnagar,et al.  Performance Analysis of AF Based Hybrid Satellite-Terrestrial Cooperative Network over Generalized Fading Channels , 2013, IEEE Communications Letters.

[73]  Goran T. Djordjevic,et al.  Performance of interference-limited dual-hop non-regenerative relays over rayleigh fading channels , 2011, IET Commun..

[74]  S.W. Halpern.  Reuse partitioning in cellular systems , 1983, 33rd IEEE Vehicular Technology Conference.

[75]  Youngju Kim,et al.  Performance Analysis of Two-Tier Femtocell Networks with Outage Constraints , 2010, IEEE Transactions on Wireless Communications.

[76]  Kang G. Shin,et al.  Adaptive Interference Management of OFDMA Femtocells for Co-Channel Deployment , 2011, IEEE Journal on Selected Areas in Communications.

[77]  E. Erkip,et al.  Source and Channel Coding for Quasi-Static Fading Channels , 2005, Conference Record of the Thirty-Ninth Asilomar Conference onSignals, Systems and Computers, 2005..

[78]  Sang Joon Kim,et al.  A Mathematical Theory of Communication , 2006 .

[79]  Jie Zhang,et al.  OFDMA Femtocells: Intracell Handover for Interference and Handover Mitigation in Two-Tier Networks , 2010, 2010 IEEE Wireless Communication and Networking Conference.

[80]  Albrecht J. Fehske,et al.  Bit per Joule efficiency of cooperating base stations in cellular networks , 2010, 2010 IEEE Globecom Workshops.

[81]  Yang Yang,et al.  Network energy saving technologies for green wireless access networks , 2011, IEEE Wireless Communications.

[82]  Khairi Ashour Hamdi,et al.  A unified model for interference analysis in unlicensed frequency bands , 2009, IEEE Transactions on Wireless Communications.

[83]  Jeffrey G. Andrews,et al.  Guest editorial: geometry and random graphs for the analysis and design of wireless networks , 2009, IEEE Journal on Selected Areas in Communications.

[84]  Mazen O. Hasna,et al.  Generalized area spectral efficiency: An effective performance metric for green wireless communications , 2013, 2013 IEEE International Conference on Communications (ICC).

[85]  Kwang-Cheng Chen,et al.  Design and Analysis of Downlink Spectrum Sharing in Two-Tier Cognitive Femto Networks , 2012, IEEE Transactions on Vehicular Technology.

[86]  Pin-Han Ho,et al.  IPTV over WiMAX: Key Success Factors, Challenges, and Solutions [Advances in Mobile Multimedia] , 2007, IEEE Communications Magazine.

[87]  François Baccelli,et al.  An Aloha protocol for multihop mobile wireless networks , 2006, IEEE Transactions on Information Theory.

[88]  Theodore S. Rappaport,et al.  Wireless communications - principles and practice , 1996 .

[89]  M. Nakagami.  The m-Distribution—A General Formula of Intensity Distribution of Rapid Fading , 1960 .

[90]  Holger Claussen,et al.  Financial Analysis of a Pico-Cellular Home Network Deployment , 2007, 2007 IEEE International Conference on Communications.

[91]  Jeffrey G. Andrews,et al.  Spectrum allocation in two-tier networks , 2008, 2008 42nd Asilomar Conference on Signals, Systems and Computers.

[92]  Jie Zhang,et al.  Interference avoidance and dynamic frequency planning for WiMAX femtocells networks , 2008, 2008 11th IEEE Singapore International Conference on Communication Systems.

[93]  Juhee Kim,et al.  Downlink Radio Resource Partitioning with Fractional Frequency Reuse in Femtocell Networks , 2014, IEEE Transactions on Vehicular Technology.

[94]  Caijun Zhong,et al.  On the Capacity of Dual-Hop Multiple Antenna AF Relaying Systems with Feedback Delay and CCI , 2013, IEEE Communications Letters.

[95]  Marceau Coupechoux,et al.  Analytical Joint Processing Multi-Point Cooperation Performance in Rayleigh Fading , 2012, IEEE Wireless Communications Letters.

[96]  Mohamad Assaad,et al.  Optimal Fractional Frequency Reuse (FFR) and resource allocation in multiuser OFDMA system , 2009, 2009 International Conference on Information and Communication Technologies.

[97]  Zaher Dawy,et al.  A Generic Interference Model for Uplink OFDMA Networks With Fractional Frequency Reuse , 2014, IEEE Transactions on Vehicular Technology.

[98]  Nuwan S. Ferdinand,et al.  Effects of Line-of-Sight Interference on the Performance of Amplify-and-Forward Relay Network , 2013, IEEE Communications Letters.

[99]  Ismail Güvenç,et al.  A hybrid frequency assignment for femtocells and coverage area analysis for co-channel operation , 2008, IEEE Communications Letters.

[100]  Xiaoli Chu,et al.  On Providing Downlink Services in Collocated Spectrum-Sharing Macro and Femto Networks , 2011, IEEE Transactions on Wireless Communications.

[101]  Khairi Ashour Hamdi,et al.  A Unified Framework for Interference Analysis of Noncoherent MFSK Wireless Communications , 2010, IEEE Transactions on Communications.

[102]  Gerhard Fettweis,et al.  Power consumption modeling of different base station types in heterogeneous cellular networks , 2010, 2010 Future Network & Mobile Summit.

[103]  Zsehong Tsai,et al.  Performance evaluation of dynamic spectrum sharing for two wireless communication networks , 2010, IET Commun..

[104]  Andrea J. Goldsmith,et al.  Distortion Minimization in Gaussian Layered Broadcast Coding With Successive Refinement , 2007, IEEE Transactions on Information Theory.

[105]  Liang Han,et al.  Relay Placement for Amplify-and-Forward Relay Channels with Correlated Shadowing , 2013, IEEE Wireless Communications Letters.

[106]  Ekram Hossain,et al.  Two-Tier HetNets with Cognitive Femtocells: Downlink Performance Modeling and Analysis in a Multichannel Environment , 2014, IEEE Transactions on Mobile Computing.

[107]  Khairi Ashour Hamdi,et al.  Interference characterization in the unlicensed band , 2006, IEEE Communications Letters.

[108]  Jeffrey G. Andrews,et al.  Comparison of Fractional Frequency Reuse Approaches in the OFDMA Cellular Downlink , 2010, 2010 IEEE Global Telecommunications Conference GLOBECOM 2010.

[109]  Khairi Ashour Hamdi,et al.  A useful lemma for capacity analysis of fading interference channels , 2010, IEEE Transactions on Communications.

[110]  Paulo Cardieri,et al.  Modeling Interference in Wireless Ad Hoc Networks , 2010, IEEE Communications Surveys & Tutorials.

[111]  Geoffrey Ye Li,et al.  OFDM and Its Wireless Applications: A Survey , 2009, IEEE Transactions on Vehicular Technology.

[112]  George K. Karagiannidis,et al.  Two hop amplify-and-forward transmission in mixed rayleigh and rician fading channels , 2009, IEEE Communications Letters.

[113]  Jeffrey G. Andrews,et al.  Spectrum allocation in tiered cellular networks , 2009, IEEE Transactions on Communications.

[114]  Thomas Kaiser,et al.  Femtocell Spectrum Access Underlaid in Fractional Frequency Reused Macrocell , 2011, 2011 IEEE International Conference on Communications Workshops (ICC).

[115]  Mohamed-Slim Alouini,et al.  Area spectral efficiency of cellular mobile radio systems , 1999 .

[116]  Eitan Altman,et al.  Interference coordination in wireless networks: A flow-level perspective , 2013, 2013 Proceedings IEEE INFOCOM.

[117]  Anders Høst-Madsen,et al.  Capacity bounds and power allocation for wireless relay channels , 2005, IEEE Transactions on Information Theory.

[118]  Salama Ikki,et al.  Performance Evaluation and Optimization of Dual-Hop Communication over Nakagami-m Fading Channels in the Presence of Co-Channel Interferences , 2012, IEEE Communications Letters.

[119]  Xiaoli Chu,et al.  Downlink Outage Probability of Co-Channel Femtocells in Hierarchical 3-Sector Macrocells , 2012, IEEE Communications Letters.

[120]  Thomas Bonald,et al.  Capacity Gains of Some Frequency Reuse Schemes in OFDMA Networks , 2009, GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference.

[121]  Zhisheng Niu,et al.  Cell zooming for cost-efficient green cellular networks , 2010, IEEE Communications Magazine.

[122]  Muhammad Ali Imran,et al.  Energy Efficiency Contours for Single-Carrier Downlink Channels , 2011, IEEE Communications Letters.

[123]  Jeffrey G. Andrews,et al.  Analytical Evaluation of Fractional Frequency Reuse for Heterogeneous Cellular Networks , 2011, IEEE Transactions on Communications.

[124]  A. Goldsmith,et al.  Variable-rate variable-power MQAM for fading channels , 1996, Proceedings of Vehicular Technology Conference - VTC.

[125]  Geoffrey Ye Li,et al.  Throughput and Optimal Threshold for FFR Schemes in OFDMA Cellular Networks , 2012, IEEE Transactions on Wireless Communications.

[126]  Youngju Kim,et al.  Area Spectral Efficiency of Shared Spectrum Hierarchical Cell Structure Networks , 2010, IEEE Transactions on Vehicular Technology.

[127]  Seong-Lyun Kim,et al.  On the Frequency Allocation for Coordinated Multi-Point Joint Transmission , 2012, 2012 IEEE 75th Vehicular Technology Conference (VTC Spring).

[128]  Caijun Zhong,et al.  Dual-hop systems with noisy relay and interference-limited destination , 2010, IEEE Transactions on Communications.

[129]  Albrecht J. Fehske,et al.  Energy Efficiency Improvements through Micro Sites in Cellular Mobile Radio Networks , 2009, 2009 IEEE Globecom Workshops.

[130]  Gordon L. Stuber,et al.  Principles of Mobile Communication , 1996 .

[131]  Tommy Svensson,et al.  Resource allocation for clustered network MIMO OFDMA systems , 2012, EURASIP J. Wirel. Commun. Netw..

[132]  Jeffrey G. Andrews,et al.  Open, closed, and shared access femtocells in the downlink , 2012, EURASIP Journal on Wireless Communications and Networking.

[133]  Vijay K. Bhargava,et al.  Green Cellular Networks: A Survey, Some Research Issues and Challenges , 2011, IEEE Communications Surveys & Tutorials.

[134]  Jeffrey G. Andrews,et al.  Analytical Evaluation of Fractional Frequency Reuse for OFDMA Cellular Networks , 2011, IEEE Transactions on Wireless Communications.

[135]  Gerhard Fettweis,et al.  Flow-level models for capacity planning and management in interference-coupled wireless data networks , 2014, IEEE Communications Magazine.

[136]  Sastri L. Kota,et al.  A survey on mobile satellite systems , 2010, Int. J. Satell. Commun. Netw..

[137]  Jiangzhou Wang,et al.  Performance Analysis of Chunk-Based Resource Allocation in Multi-Cell OFDMA Systems , 2014, IEEE Journal on Selected Areas in Communications.

[138]  Erik Dahlman,et al.  4G: LTE/LTE-Advanced for Mobile Broadband , 2011 .

[139]  Daniel Benevides da Costa,et al.  Outage Performance of Two Hop AF Relaying Systems with Co-Channel Interferers over Nakagami-m Fading , 2011, IEEE Communications Letters.

[140]  Roberto Hincapie,et al.  Quality of Service and Resource Allocation in WiMAX , 2012 .

[141]  Aggelos K. Katsaggelos,et al.  Source fidelity over fading channels: performance of erasure and scalable codes , 2008, IEEE Transactions on Communications.

[142]  Ding-Bing Lin,et al.  Dynamic spectrum sharing for two-layer cellular networks , 2011, 2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications.

[143]  Abbas Jamalipour,et al.  Wireless communications , 2005, GLOBECOM '05. IEEE Global Telecommunications Conference, 2005..

[144]  Mohamed Kadhem Karray,et al.  A Queueing Theoretic Approach to the Dimensioning of Wireless Cellular Networks Serving Variable-Bit-Rate Calls , 2013, IEEE Transactions on Vehicular Technology.

[145]  G.L. Stuber,et al.  Co-channel interference of microcellular systems on shadowed Nakagami fading channels , 1993, IEEE 43rd Vehicular Technology Conference.

[146]  Mazen O. Hasna,et al.  End-to-end performance of transmission systems with relays over Rayleigh-fading channels , 2003, IEEE Trans. Wirel. Commun..

[147]  Chintha Tellambura,et al.  Unified Exact Performance Analysis of Two-Hop Amplify-and-Forward Relaying in Nakagami Fading , 2010, IEEE Transactions on Vehicular Technology.

[148]  Gregory W. Wornell,et al.  Source-channel diversity for parallel channels , 2004, IEEE Transactions on Information Theory.

[149]  Ekram Hossain,et al.  Fractional frequency reuse for interference management in LTE-advanced hetnets , 2013, IEEE Wireless Communications.

[150]  Hidekazu Murata,et al.  Cell Edge Capacity Improvement by Using Adaptive Base Station Cooperation in Cellular Networks with Fractional Frequency Reuse , 2010, IEICE Trans. Commun..

[151]  C.-C. Jay Kuo,et al.  A Graph Approach to Dynamic Fractional Frequency Reuse (FFR) in Multi-Cell OFDMA Networks , 2009, 2009 IEEE International Conference on Communications.

[152]  Mazen O. Hasna,et al.  A performance study of dual-hop transmissions with fixed gain relays , 2003, 2003 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03)..

[153]  Victor C. M. Leung,et al.  Dynamic Frequency Allocation in Fractional Frequency Reused OFDMA Networks , 2008 .

[154]  Reza Hoshyar,et al.  Energy-efficient resource allocation in wireless OFDMA systems , 2010, 21st Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications.

[155]  Yuhong Yang.  Elements of Information Theory (2nd ed.). Thomas M. Cover and Joy A. Thomas , 2008 .

[156]  Carl Wijting,et al.  Interference Aware Scheduling for Soft Frequency Reuse , 2009, VTC Spring 2009 - IEEE 69th Vehicular Technology Conference.

[157]  L. Chiaraviglio,et al.  Optimal Energy Savings in Cellular Access Networks , 2009, 2009 IEEE International Conference on Communications Workshops.

[158]  Gerhard Fettweis,et al.  Micro base stations in load constrained cellular mobile radio networks , 2010, 2010 IEEE 21st International Symposium on Personal, Indoor and Mobile Radio Communications Workshops.

[159]  Xu Ning,et al.  A Downlink Radio Resource Allocation Algorithm Based on Inter-Cell Interference Mitigation for Multi-Cell OFDMA System , 2006, 2006 First International Conference on Communications and Networking in China.

[160]  Taeyoung Lee,et al.  Interference management in LTE femtocell systems using Fractional Frequency Reuse , 2010, 2010 The 12th International Conference on Advanced Communication Technology (ICACT).

[161]  Geng Wu,et al.  Capacity and coverage enhancement in heterogeneous networks , 2011, IEEE Wireless Communications.

[162]  Xiaoli Chu,et al.  Dynamic Downlink Frequency and Power Allocation in OFDMA Cellular Networks , 2012, IEEE Transactions on Communications.

[164]  Caijun Zhong,et al.  Exact Outage Analysis of Dual-Hop Fixed-Gain AF Relaying with CCI under Dissimilar Nakagami-m Fading , 2012, IEEE Communications Letters.

[165]  Khairi Ashour Hamdi,et al.  Performance of fractional frequency reuse with comp at the cell-edge , 2014, 2014 IEEE REGION 10 SYMPOSIUM.

[166]  Mohamed-Slim Alouini,et al.  A novel ergodic capacity analysis of diversity combining and multihop transmission systems over generalized composite fading channels , 2012, 2012 IEEE International Conference on Communications (ICC).

[167]  Angel R. Martinez,et al.  Computational Statistics Handbook with MATLAB , 2001 .

[168]  Adam Wolisz,et al.  Optimal soft frequency reuse and dynamic sub-carrier assignments in cellular OFDMA networks , 2010, Eur. Trans. Telecommun..

[169]  Valentine A. Aalo,et al.  Performance Analysis of Multi-Hop Amplify-and-Forward Relaying Systems in Rayleigh Fading Channels with a Poisson Interference Field , 2014, IEEE Transactions on Wireless Communications.