Co Channel Interference Mitigation In Reuse 1 Cellular Ofdm Systems
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Evaluation of Interference Cancellation Architectures for Heterogeneous Cellular Networks
| Author | : Skander Kacem |
| Publisher | : diplom.de |
| Total Pages | : 59 |
| Release | : 2015-01-01 |
| Genre | : Computers |
| ISBN | : 3954898438 |
With the increasing data throughput requirements, the cellular network needs to move from homogeneous to heterogeneous system. In fact, the coexistence of different types of base stations with different capabilities such as femto/pico base stations as well as relays and macro base stations in random placements should improve the coverage and the spectral effciency of the cellular networks. However, the complexity of inter-cell interference management will grow drastically and traditional interference voidance/mitigation approaches need to be revised. Approaching this problem at the user equipment (UE), is of great interest since it can rely on little coordination among base stations. The work presented in this thesis focuses on a downlink interference cancellation at the UE and shows that such an intelligent receiver can bring its promised benefitt only if the base stations get involved in the interference cancellation, specically in the channel estimation process. The limitations of this approach are evaluated and depending on the surrounding base stations two solutions are proposed and discussed.
Fundamentals of Wireless Communication
| Author | : David Tse |
| Publisher | : Cambridge University Press |
| Total Pages | : 598 |
| Release | : 2005-05-26 |
| Genre | : Computers |
| ISBN | : 9780521845274 |
This textbook takes a unified view of the fundamentals of wireless communication and explains cutting-edge concepts in a simple and intuitive way. An abundant supply of exercises make it ideal for graduate courses in electrical and computer engineering and it will also be of great interest to practising engineers.
MIMO-OFDM Wireless Communications with MATLAB
| Author | : Yong Soo Cho |
| Publisher | : John Wiley & Sons |
| Total Pages | : 458 |
| Release | : 2010-08-20 |
| Genre | : Technology & Engineering |
| ISBN | : 0470825626 |
MIMO-OFDM is a key technology for next-generation cellular communications (3GPP-LTE, Mobile WiMAX, IMT-Advanced) as well as wireless LAN (IEEE 802.11a, IEEE 802.11n), wireless PAN (MB-OFDM), and broadcasting (DAB, DVB, DMB). In MIMO-OFDM Wireless Communications with MATLAB®, the authors provide a comprehensive introduction to the theory and practice of wireless channel modeling, OFDM, and MIMO, using MATLAB® programs to simulate the various techniques on MIMO-OFDM systems. One of the only books in the area dedicated to explaining simulation aspects Covers implementation to help cement the key concepts Uses materials that have been classroom-tested in numerous universities Provides the analytic solutions and practical examples with downloadable MATLAB® codes Simulation examples based on actual industry and research projects Presentation slides with key equations and figures for instructor use MIMO-OFDM Wireless Communications with MATLAB® is a key text for graduate students in wireless communications. Professionals and technicians in wireless communication fields, graduate students in signal processing, as well as senior undergraduates majoring in wireless communications will find this book a practical introduction to the MIMO-OFDM techniques. Instructor materials and MATLAB® code examples available for download at www.wiley.com/go/chomimo
Co-channel Interference Suppression for Ofdm Systems
| Author | : Jonghyun Won |
| Publisher | : |
| Total Pages | : |
| Release | : 2003 |
| Genre | : |
| ISBN | : |
ABSTRACT: We propose new methods for co-channel interference suppression in orthogonal frequency division multiplexing (OFDM) systems with multiple receive antennas. Our methods use a low-order time-domain model to parameterize the matrix-valued spectral density of the noise and interference. A penalized maximum likelihood-function approach is used to choose the proper model order automatically in each received data frame. We show that these methods significantly improve the symbol-error-rate when interference exists in the received data. Numerical examples are provided to illustrate the performance of our new methods and compare with conventional methods. We also discuss the diplus or minusculties associated with the application of our method to space-time OFDM (ST-OFDM).
Introduction to 3G Mobile Communications
| Author | : Juha Korhonen |
| Publisher | : Artech House |
| Total Pages | : 572 |
| Release | : 2003 |
| Genre | : Computers |
| ISBN | : 9781580535946 |
This revised edition provides professionals with an up-to-date introduction to third generation (3G) mobile communication system principles, concepts, and applications, without the use of advanced mathematics. This newly revised edition of an Artech House bestseller provides professionals with an up-to-date introduction to third generation (3G) mobile communication system principles, concepts, and applications, without the use of advanced mathematics. The second edition ncludes an even more thorough treatment of potential 3G applications and descriptions of new, emerging technologies.
Avoiding Effects of OFDM Adjacent Channel Interference by Using Combinations of Modulation Schemes
| Author | : Le Tien Anh |
| Publisher | : GRIN Verlag |
| Total Pages | : 89 |
| Release | : 2009-05 |
| Genre | : Technology & Engineering |
| ISBN | : 3640320255 |
Master's Thesis from the year 2008 in the subject Engineering - Communication Technology, grade: erfolgreich bestanden, Keio University (Graduate school of Science and Technology - School of Science for Open and Environmental Systems), language: English, abstract: Non-orthogonality among adjacent OFDM channels creates OFDM adjacent channel interference and it heavily affects the entire system's performance. Conventional methods to avoid OFDM adjacent channel interference are not only insufficient but also are wasting a lot of frequency resources. In this research, a method using combinations of modulation schemes is proposed to avoid effects of OFDM adjacent channel interference. It can be obtained by modulating the sub-carriers at the outer sides of an OFDM channel with lower order modulation schemes (such as BPSK or QPSK), while modulating the sub-carriers at the inner side of the OFDM channel with higher order modulation schemes (such as 16QAM or 64QAM). Intensive simulations have been carried out to evaluate the performance of the proposed method. The simulation results have shown an increase in the OFDM system's resistance against adjacent channel interference while still maintain the bandwidth efficiency.
