Wireless Communication and Networks Publications
Books and Book Chapters 2012
V. Jungnickel, A. Forck, S. Jaeckel, S. Wahls, L. Thiele, T. Haustein, W. Zirwas, H. Droste, G. Kadel, Realtime Implementation and Field Trials for Downlink CoMP, in: P. Marsch, G. Fettweis, Coordinated Multi-Point in Mobile Communications, Cambridge University Press, chapter 13.3., 2012
M. Schubert, H. Boche. Interference Calculus - A General Framework for Interference Management and Network Utility Optimization, Springer, 2012, accepted
L. Thiele, T. Haustein, V. Jungnickel, W. Zirwas, F. Boccardi, Downlink Distributed CoMP approaching Centralized Joint Transmission, in: P. Marsch, G. Fettweis, Coordinated Multi-Point in Mobile Communications, Cambridge University Press, chapter 6.3., 2012
L. Thiele, T. Wirth, M. Schellmann, T. Haustein, V. Jungnickel, Downlink Multi-User Beamforming with Interference Rejection Combining, in: P. Marsch, G. Fettweis, Coordinated Multi-Point in Mobile Communications, Cambridge University Press, chapter 5.1., 2012
W. Zirwas, L. Thiele, T. Weber, N. Palleit, V. Jungnickel, Channel Estimation for CoMP, in: P. Marsch, G. Fettweis, Coordinated Multi-Point in Mobile Communications, Cambridge University Press, chapter 9.1., 2012
Journal Papers 2012
J. Park, P. Pawelczak, P. Grønsund, D. Cabric, Analysis Framework for Opportunistic Spectrum OFDMA and its Application to IEEE 802.22 Standard, IEEE Trans. on Vehicular Technology, January 2012, accepted
I. Koutsopoulos, S. Stanczak, The Impact of Transmit Rate Control on Energy-efficient Estimation in Wireless Sensor Networks, IEEE Trans. on Wireless Communications, 2012, accepted
F. Penna, R. Garello, Decentralized Neyman-Pearson Test with Belief Propagation for Peer-to-Peer Collaborative Spectrum Sensing, IEEE Trans. on Wireless Communications, 2012, accepted
F. Penna, Y. Sun, L. Dolecek, D. Cabric, Detecting and Counteracting Statistical Attacks in Cooperative Spectrum Sensing, IEEE Trans. on Signal Processing, vol. PP, no. 99, 2012, accepted
H. Wymeersch, F. Penna, V. Savic, Uniformly Reweighted Belief Propagation for Estimation and Detection in Wireless Networks, IEEE Trans. on Wireless Communications, 2012, accepted
X. Li, J. Vucic, V. Jungnickel, J. Armstrong, On the Capacity of Intensity-Modulated Direct-Detection Systems and the Information Rate of ACO-OFDM for Indoor Optical Wireless Applications, IEEE Trans. on Communications, to appear
Conference Papers 2012
M. Kasparick, G. Wunder, μ-MaxWeight Queueing Network Control With Application To In-Flight Entertainment Systems, Future Network & Mobile Summit 2012, Berlin, Germany, July 2012
J. Bühler, G. Wunder, The Multiple Access Channel Interfering with a Point to Point Link: Linear Deterministic Sum Capacity, IEEE Intern. Conf. on Communications (ICC 2012), Ottawa, Canada, June 2012
Q. Liao, M. Wiczanowski, S. Stanczak, Toward Cell Outage Detection with Composite Hypothesis Testing, IEEE Intern. Conf. on Communications (ICC 2012), Ottawa, Canada, June 2012
P. Paschalidis, K. Mahler, A. Kortke, M. Peter, W. Keusgen, Statistical Evaluation of Multipath Component Lifetime in the Car-to-Car Channel at Urban Street Intersections Based Geometrical Tracking, IEEE 75th Vehicular Technology Conf. (VTC 2012, Spring), Yokohama, Japan, May 2012
V. Jungnickel, S. Jaeckel, K. Börner, M. Schlosser, L. Thiele, Estimating the Mobile Backhaul Traffic in Distributed Coordinated Multi-point Systems, IEEE Wireless Communications and Networking Conf. (WCNC 2012), Proc. Workshop on Hybrid Optical Wireless Access Networks (HOWAN), Paris, France, pp. 1-6, April 2012
M. Kaliszan, E. Pollakis, S. Stanczak, Multigroup Multicast with Application-Layer Coding: Beamforming for Maximum Weighted Sum Rate, IEEE Wireless Communications and Networking Conf. (WCNC 2012), Paris, France, April 2012
S. Maghsudi, S. Stanczak, A Delay-Constrained Rateless Coded Incremental Relaying Protocol for Two-Hop Transmission, IEEE Wireless Communications and Networking Conf. (WCNC 2012), Paris, France, April 2012
G. Wunder, M. Kasparick, Universal Stability and Cost Optimization in Controlled Queueing Networks, IEEE Wireless Communications and Networking Conf. (WCNC 2012), Paris, France, April 2012
M. Zheng, S. Stanczak, Y. Hai-bin, Utility-cost optimization for joint routing and power control in multi-hop wireless networks IEEE Wireless Communications and Networking Conf. (WCNC 2012), Paris, France, April 2012
M. Zheng, M. Goldenbaum, S. Stanczak, H. Yu, Fast Average Consensus in Clustered Wireless Sensor Networks by Superposition Gossiping, IEEE Wireless Communications and Networking Conf. (WCNC 2012), Paris, France, April 2012
R. L. G. Cavalcante, S. Stanczak, Robust Set-Theoretic Distributed Detection in Diffusion Networks, IEEE Conf. on Acoustics, Speech, and Signal Processing (ICASSP 2012), March 2012
R. Felbecker, L. Raschkowski, W. Keusgen, M. Peter, Electromagnetic Wave Propagation in the Millimeter Wave Band Using the NVIDIA OptiX GPU Ray Tracing Engine, IEEE European Conf. on Antennas and Propagation, (Eucap 2012), Prague, Czech Republic, March 2012
M. Peter, M. Wisotzki, M. Raceala-Motoc, W. Keusgen, R. Felbecker, M. Jacob, S. Priebe, T. Kürner, Analyzing Human Body Shadowing At 60 GHz: Systematic Wideband MIMO Measurements and Modeling Approaches, IEEE European Conf. on Antennas and Propagation, (Eucap 2012), Prague, Czech Republic, March 2012
J. Liszewski, H. Gäbler, W Keusgen, T. Haustein, 2-Antenna RF Front-End for Cognitive Radio, Workshop on Software Radios (WSR 2012), Karlsruhe, Germany, March 2012
M. Goldenbaum, H. Boche, S. Stanczak, Analog Computation via Wireless Multiple-Access Channels: Universality and Robustness, Proc. IEEE Intern. Conf. on Acoustics, Speech and Signal Processing (ICASSP 2012), Kyoto, Japan, March 2012
J. Schreck, G. Wunder, Iterative Interference Alignment for Cellular Systems with User Selection Proc. IEEE Intern. Conf. on Acoustics, Speech and Signal Processing (ICASSP 2012), Kyoto, Japan, March 2012
A. Giovanidis, Q. Liao, S. Stanczak, A Distributed Interference-aware Load balancing Algorithm for LTE Multi-Cell Networks, Proc. 16th Intern. ITG Workshop on Smart Antennas (WSA 2012), Dresden, Germany, March 2012
M. Goldenbaum, S. Stanczak, On Multiantenna Sensor Networks With Interference: Energy Consumption vs. Robustness, Proc. 16th Intern. ITG Workshop on Smart Antennas (WSA 2012), Dresden, Germany, March 2012
M. Kasparick, G. Wunder, Combining Cost-Based Queueing Control With Resource Allocation In Wireless Networks, Proc. 16th Intern. ITG Workshop on Smart Antennas (WSA 2012), Dresden, Germany, March 2012
J. Schreck, G. Wunder, Interference Alignment Over Limited Dimensions for Cellular Networks: Feasibility and Algorithms, Proc. 16th Intern. ITG Workshop on Smart Antennas (WSA 2012), Dresden, Germany, March 2012, pp. 1-8
M. Goldenbaum, H. Boche, S. Stanczak, On Analog Computation of Vector-Valued Functions in Clustered Wireless Sensor Networks, Proc. 46th Annual Conf. on Information Sciences and Systems (CISS 2012), Princeton, USA, March 2012
S. Maghsudi, S. Stanczak, Joint Power Allocation and Relay Selection for Network-Coded Two-Way Relaying, 46th Annual Conf. of Information Sciences and Systems (CISS 2012), Princeton, USA, March 2012
Books and Book Chapters 2011
M. Boldi, F. Boccardi, E. Hardouin, V. Jungnickel, M. Olsson, T. Svensson, L. Thiele, A. Tölli, Coordinated MultiPoint (CoMP) Systems, in: A. Osseiran, J. F. Monserrat, W. Mohr, Mobile and Wireless Communications for IMT-A & Beyond, Wiley, chapter 6, August 2011
F. Penna, C. Pastrone, H. Khaleel, M. A. Spirito, R. Garello, I. Guvenc et al., Characterization of Wi-Fi interference for dynamic channel allocation in WPANs, Reliable Communications for Short-Range Wireless Systems, Cambridge University Press, April 2011
Journal Papers 2011
M. Caceres, F. Penna, H. Wymeersch, R. Garello, Hybrid Cooperative Positioning based on Distributed Belief Propagation, IEEE Journal on Selected Areas in Communications (JSAC), vol. 29, no. 10, pp. 1948-1958, December 2011
H. Khaleel, F. Penna, C. Pastrone, R. Tomasi, M. Spirito, Frequency Agile Wireless Sensor Networks: Design and Implementation, IEEE Sensors Journal, vol. PP, no. 99, November 2011
V. Jungnickel, T. Wirth, Wie geht es weiter mit LTE?, FKT, vol. 65, no. 10, pp. 544-551, October 2011
W. Gabran, P. Pawelczak, D. Cabric, Throughput and Collision Analysis of Multi-Channel Multi-Stage Spectrum Sensing Algorithms, IEEE Trans. on Vehicular Technology, vol. 60, no. 7, pp. 3309-3323, September 2011
R. L. G. Cavalcante, A. Rogers, N. R. Jennings, I. Yamada, Distributed Asymptotic Minimization of Sequences of Convex Functions by a Broadcast Adaptive Subgradient Method, IEEE Journal of Selected Topics in Signal Processing, vol. 5, no. 4, pp. 739-753, August 2011
F. Penna, R. Garello, Detection of Discontinuous Signals for Cognitive Radio Applications, IET Communications, vol. 5, no. 10, pp. 1453-1561, August 2011
J. Park, P. Pawelczak, D. Cabric, Performance of Joint Spectrum Sensing and MAC Algorithms for Multichannel Opportunistic Spectrum Access Ad Hoc Networks, IEEE Transactions on Mobile Computing, vol. 10, no. 7, pp. 1011-1027, July 2011
H. Boche, M. Schubert, A generalization of Nash bargaining and proportional fairness to log-convex utility sets with power constraints, IEEE Trans. Inform. Theory, vol. 57, no. 6, pp. 3390-3404, June 2011
H. Boche, S. Naik, M. Schubert, Combinatorial characterization of interference coupling in wireless systems, IEEE Trans. Commun., vol. 59, no. 6, pp. 1697-1706, June 2011
A. Giovanidis, S. Stanczak, Stability and Distributed Power Control in MANETs with Outages and Retransmissions, IEEE Trans. on Communications, vol. 59, no. 6, pp. 1632-1643, June 2011
P. Urriza, E. Rebeiz, P. Pawelczak, D. Cabric, Computationally Efficient Modulation Level Classification Based on Probability Distribution Distance Functions, IEEE Communications Letters, vol. 15, no. 5, pp. 476-478, May 2011
H. Boche, S. Naik, M. Schubert, Pareto boundary of utility sets for multiuser wireless systems, IEEE/ACM Trans. on Networking, vol. 19, no. 2, pp. 589-601, April 2011
J. Bühler, G. Wunder, A Note on Capacity Computation for the Discrete Multiple Access Channel, IEEE Transactions on Information Theory, vol. 57, no. 4, pp. 1906-1910, April 2011
G.P. Ariza,Alexi, U. Trautwein, R. Müller, F. Wollenschläger, R. Thomä, J. Kunisch, I. De la Torre, R. Felbecker, M. Peter, W. Keusgen, 60 GHz Short-Range Communications: Channel Measurements, Analysis and Modelling, Intern. Journal of Microwave and Wireless Technologies, Cambridge University Press, Vol. 3, pp. 201-211, March 2011
S. Krone, F. Guderian, G. Fettweis, M. Petri, M. Piz, M. Marnikovic, M. Peter, R. Felbecker, W. Keusgen, Physical layer design, link budget analysis, and digital baseband implementation for 60 GHz short-range applications, Intern. Journal of Microwave and Wireless Technologies, Cambridge University Press, Vol. 3, pp. 189-200, March 2011
B. Schulte, M. Peter, R. Felbecker, W. Keusgen, S. Steffen, H. Schumacher, M. Hellfeld, A. Barghouthi, S. Krone, F. Guderian, G. Fettweis, 60 GHz WLAN applications and implementation aspects, Intern. Journal of Microwave and Wireless Technologies, Cambridge University Press, Vol. 3, pp. 213-221, March 2011
P. Pawelczak, K. Nolan, L. Doyle, S. W. Oh, D. Cabric, Cognitive Radio: Ten Years of Experimentation and Development, IEEE Communications Magazine, vol. 49, no. 3, pp. 90-100, March 2011
R. Irmer, H. Droste, P. Marsch, M. Grieger, G. Fettweis, S. Brueck, H.-P. Mayer, L. Thiele, V. Jungnickel, Coordinated Multipoint: Concepts, Performance, and Field Trial Results, IEEE Communications Magazine, vol. 49, no. 2, pp. 102-111, February 2011
G. Wunder, J. Schreck, P. Jung, Nearly Doubling the Throughput of Multiuser MIMO Systems Using Codebook Tailored Limited Feedback Protocol, IEEE Trans. on Wireless Communications, 2011, accepted
Conference Papers 2011
F. Penna, D. Cabric, Bounds and Tradeoffs for Cooperative DoA-only Localization of Primary Users, IEEE Global Communications Conf. (GLOBECOM 2011), Houston, TX, USA, December 2011
F. Penna, Y. Sun, L. Dolecek, D. Cabric, Joint Spectrum Sensing and Detection of Malicious Nodes via Belief Propagation, IEEE Global Communications Conf. (GLOBECOM 2011), Houston, TX, USA, December 2011
R. Felbecker, W. Keusgen, M. Peter, Estimation of permittivity and loss tangent of high frequency materials in the millimeter wave band using a hemispherical open resonator, IEEE Intern. Conf. on Microwaves, Communications, Antennas and Electronics Systems (COMCAS 2011), Tel Aviv, Israel, November 2011
M. Goldenbaum, H. Boche, S. Stanczak, Analyzing the Space of Functions Analog-Computable via Wireless Multiple-Access Channels, Proc. 8th Intern. Symposium on Wireless Communication Systems (ISWCS 2011), Aachen, Germany, pp. 779-783, November 2011
S. Maghsudi, S. Stanczak, A Hybrid Centralized-Decentralized Resource Allocation Scheme for Two-Hop Transmission, Proc. 8th Intern. Symposium on Wireless Communication Systems (ISWCS 2011), Aachen, Germany, pp. 91-96, November 2011
J. Mohammadi, S. Stanczak, R. L. G. Cavalcante, J. Etesami, Iterative Distributed Channel Probing for Cognitive Radios with Power-Controlled Wireless Links, Proc. 8th Intern. Symposium on Wireless Communication Systems (ISWCS 2011), Aachen, Germany, November 2011
M. Zheng, S. Stanczak, Y. Hai-bin, Joint routing and power control in Rayleigh-faded wireless networks with ARQ protocols, Proc. 8th Intern. Symposium on Wireless Communication Systems (ISWCS 2011), Aachen, Germany, November 2011
G. Wunder, J. Bühler. Deterministic capacity modeling for cellular channels: Building blocks, approximate regions, and optimal transmission strategies, Proc. 4th Intern. Symposium on Applied Sciences in Biomedical and Communication Technologies (ISABEL 2011), Barcelona, Spain, October 2011, invited paper
K. Manolakis, U. Krüger, K. Krüger, M. A. G. Estévez, S. Mikulla, V. Jungnickel, Borehole Communication with Acoustic OFDM, 16th Intern. OFDM-Workshop 2011 (InOWo 2011), Hamburg, Germany, September 2011
J. Schreck, P. Jung, G. Wunder, Compressed Sensing Based Channel State Feedback for Cooperating MIMO-OFDM Systems, 16th Intern. OFDM-Workshop 2011 (InOWo 2011), Hamburg, Germany, pp. 1-5, September 2011
J. Luo, W. Keusgen, A. Kortke, Preamble Based Joint CFO, Frequency-Selective I/Q-Imbalance and Channel Estimation and Compensation in MIMO OFDM Systems, IEEE 74th Vehicular Technology Conf. (VTC 2011-Fall), San Francisco, USA, September 2011
P. Paschalidis, K. Mahler, A. Kortke, M. Wisotzki, M. Peter, W. Keusgen, 2 x 2 MIMO Measurements of the Wideband Car-to-Car Channel at 5.7 GHz on Urban Street Intersections, IEEE 74th Vehicular Technology Conf. (VTC 2011-Fall), San Francisco, USA, September 2011, pp. 1-5
J. Bühler, G. Wunder, On Interference Alignment and the Deterministic Capacity for Cellular Channels with Weak Symmetric Cross Links, Proc. IEEE Intern. Symposium on Information Theory (ISIT 2011), Saint Petersburg, Russia, July/August 2011
M. Kaliszan, E. Pollakis, S. Stanczak, Efficient Beamforming Algorithms for MIMO Multicast with Application-Layer Coding, Proc. IEEE Intern. Symposium on Information Theory (ISIT 2011), Saint Petersburg, Russia, July/August 2011
H. Wymeersch, F. Penna, V. Savic, Uniformly Reweighted Belief Propagation: A Factor Graph Approach, Proc. IEEE Intern. Symposium on Information Theory (ISIT 2011), Saint Petersburg, Russia, July/August 2011
F. Penna, J. Wang, D. Cabric, Cooperative localization of primary users by directional antennas or antenna arrays: Challenges and design issues, IEEE Intern. Symposium on Antennas and Propagation (APS-URSI 2011), Spokane, WA, USA, July 2011
W. Keusgen, A. Kortke, L. Koschel, M. Peter, R. Weiler, H. Zirath, M. Gavell, Z. He, An NLOS-Capable 60 GHz MIMO Demonstrator: System Concept & Performance, IEEE 9th Intern. New Circuits and Systems Conference (NEWCAS 2011), Bordeaux, France, pp. 265-268, June 2011
E. Karipidis, D. Gesbert, M. Haardt, K.-M. Ho, E. Jorswieck, E. G. Larsson, J. Li, J. Lindblom, C. Scheunert, M. Schubert, N. Vucic, Transmit beamforming for inter-operator spectrum sharing, Future Network and Mobile Summit 2011, Warsaw, Poland, June 2011
J. Luo, A. Kortke, W. Keusgen, J. Li, M. Haardt, P. Prochazka, J. Sykora, A Flexible Hardware-In-the-Loop Test Platform for Physical Resource Sharing Mechanisms in Wireless Networks, Future Network and Mobile Summit 2011, Warsaw, Poland, June 2011
B. Nadler, F. Penna, R. Garello, Performance of Eigenvalue-based Signal Detectors with Known and Unknown Noise Level, IEEE Intern. Conf. on Communications (ICC 2011), Kyoto, Japan, June 2011
G. Paschos, P. Mannersalo, S. Stanczak, E. Altman, L. Tassiulas, Energy Optimal Algorithms for mobile Internet: Stochastic modeling, performance analysis and optimal control, 7th EURO-NGI Conf. on Next Generation Internet (NGI 2011), Kaiserslautern, Germany, June 2011
F. Penna, H. Wymeersch, V. Savic, Uniformly Reweighted Belief Propagation for Distributed Bayesian Hypothesis Testing, IEEE Workshop on Statistical Signal Processing (SSP 2011), Nice, France, June 2011
P. Paschalidis, K. Mahler, A. Kortke, M. Peter, W. Keusgen, Pathloss and Multipath Power Decay of the Wideband Car-to-Car Channel at 5.7 GHz, IEEE 73rd Vehicular Technology Conf. (VTC Spring 2011), Budapest, Hungary, pp. 1-5, May 2011
S. Stanczak, M. Kaliszan, M. Goldenbaum, Max-Min Fair Rate Control Based on a Saddle-Point Characterization of Some Perron Roots, Proc. IEEE Intern. Conf. on Acoustics, Speech and Signal Processing (ICASSP 2011), Prague, Czech Republic, pp. 3112-3115, May 2011
N. Vucic, M. Schubert, Fixed Point Iteration for Max-Min SIR Balancing with General Interference Functions, Proc. IEEE Intern. Conf. on Acoustics, Speech and Signal Processing (ICASSP 2011), Prague, Czech Republic, May 2011
S. Stanczak, M. Kaliszan, M. Goldenbaum, On Distributed Power Control and Transceiver Optimization in Wireless Networks, Proc. 5th Intern. ICST Conf. on Performance Evaluation Methodologies and Tools (ValueTools 2011), Cachan, France, May 2011, invited paper
R. L. G. Cavalcante, A. Rogers, N. R. Jennings, Consensus acceleration in multi-agent systems with the Chebyshev semi-iterative method, 10th Intern. Conf. on Autonomous Agents and Multiagent Systems (AAMAS 2011), Taipei, Taiwan, pp. 165-172, May 2011
M. Vasirani, R. Kota, R. L. G. Cavalcante, S. Ossowski, N. R. Jennings, Using coalitions of wind generators and electric vehicles for effective energy market participation, 10th Intern. Conf. on Autonomous Agents and Multiagent Systems (AAMAS 2011), Taipei, Taiwan, pp. 1099-1100, May 2011
W. Gabran, P. Pawelczak, D. Cabric, Multi-Channel Multi-Stage Spectrum Sensing: Link Layer Performance and Energy Consumption, IEEE Intern. Dynamic Spectrum Access Networks (DySpan 2011), Aachen, Germany, May 2011
D. Wieruch, V. Pohl, A Cognitive Radio Architecture based on sub-Nyquist Sampling, IEEE Intern. Dynamic Spectrum Access Networks (DySpan 2011), Aachen, Germany, May 2011
M. Kasparick, G. Wunder, Autonomous Distributed Power Control Algorithms for Interference Mitigation in Multi-Antenna Cellular Networks, 17th European Wireless Conf. (EW 2011), Vienna, Austria, April 2011
Q. Liao, M. Kaliszan, S. Stanczak, A Virtual Soft Handover Method Based on Base Station Cooperation with Fountain Codes, 17th European Wireless Conf. (EW 2011), Vienna, Austria, April 2011
J. Schreck, G. Wunder, Distributed Interference Alignment in Cellular Systems: Analysis and Algorithms, 17th European Wireless Conf. (EW 2011), Vienna, Austria, pp. 1-8, April 2011
S. Stefanov, A. Feistel, S. Stanczak, Two Stage Power Control in Multi-cell Wireless Networks, 17th European Wireless Conf. (EW 2011), Vienna, Austria, April 2011
K. Manolakis, S. Jaeckel, E. S. Márquez, V. Jungnickel, Impact of Path Loss and Delay Spread on Base Station Cooperation, 5th European Conf. on Antennas and Propagation (EuCAP 2011), Rome, Italy, April 2011
M. Goldenbaum, R. A. Akl, S. Valentin, S. Stanczak, On the Effect of Feedback Delay in the Downlink of Multiuser OFDM Systems, Proc. 45th Annual Conf. on Information Sciences and Systems (CISS 2011), Baltimore, MD, USA, March 2011
K. Manolakis, L. Thiele, C. Oberli, T. Haustein, V. Jungnickel, Impairment Modeling for Joint Transmission CoMP, 2nd Intern. Conf. on Wireless Communications, Vehicular Technology, Information Theory and Aerospace & Electronic System Technology (Wireless VITAE 2011), Chennai, India, March 2011, invited paper
P. Paschalidis, K. Mahler, M. Wisotzki, A. Kortke, Investigation and Simulation of Car2X Communication for Cooperative Road Safety Systems, 8th Intern. Workshop on Intelligent Transportation (WIT 2011), Hamburg, Germany, March 2011
J. Schreck, G. Wunder, Iterative Interference Alignment for Cellular Systems, Intern. ITG Workshop on Smart Antennas (WSA 2011), Aachen, Germany, pp. 1-8, February 2011
J. Liszewski, B. Schubert, W. Keusgen, A. Kortke, Low-Complexity FPGA Implementation of Volterra Predistorters for Power Amplifiers, IEEE Topical Conf. on Power Amplifiers for Wireless and Radio Applications (PAWR 2011), Phoenix, AZ, USA, pp. 41-44, January 2011
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