RF Imperfections in High-rate Wireless Systems - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook RF Imperfections in High-rate Wireless Systems write by Tim Schenk. This book was released on 2008-01-29. RF Imperfections in High-rate Wireless Systems available in PDF, EPUB and Kindle. This is one of the first books on the emerging research topic of digital compensation of RF imperfections. The book presents a new multidisciplinary vision on the design of wireless communication systems. In this approach the imperfections of the RF front-ends are accepted and digital signal processing algorithms are designed to suppress their impact on system performance. The book focuses on multiple-antenna orthogonal frequency division multiplexing (MIMO OFDM).
Impact of RF Imperfections on 60 GHz Wireless Communication Systems
Impact of RF Imperfections on 60 GHz Wireless Communication Systems - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Impact of RF Imperfections on 60 GHz Wireless Communication Systems write by Umar Hassan Rizvi. This book was released on 2011. Impact of RF Imperfections on 60 GHz Wireless Communication Systems available in PDF, EPUB and Kindle.
RF Impairments Estimation and Compensation in Multi-antenna OFDM Systems
RF Impairments Estimation and Compensation in Multi-antenna OFDM Systems - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook RF Impairments Estimation and Compensation in Multi-antenna OFDM Systems write by Shashwat Jnawali. This book was released on 2011. RF Impairments Estimation and Compensation in Multi-antenna OFDM Systems available in PDF, EPUB and Kindle. Modern wireless transceivers use multiple transmit and/or receive antennas, higher order modulation and large bandwidth to satisfy the high data rate requirements of voice, data and multimedia applications. As wireless systems become more complex, the need to make wireless transceivers more efficient, compact and cost effective becomes challenging. It is partly due to the impairments resulting from imperfections in analog radio frequency (RF) components that reduce the efficiency of wireless transceivers. Two of the most common impairments that significantly limit the performance of wireless transceivers are in phase and quadrature (IQ) imbalance and phase noise. These are caused by the mismatch in oscillator output and random frequency fluctuations at the I and Q branches of IQ transceivers, respectively. Low complexity estimation and compensation techniques that can jointly remove the effect of these impairments are highly desirable. The degrading effect of RF impairments is more pronounced in multi-input-multi-output orthogonal frequency division multiplexing (MIMO-OFDM) systems. As many of the modern and future wireless systems employ MIMO-OFDM, studying the effect of and addressing the techniques to mitigate RF impairments in these systems are essential to meet the stringent requirements of modern wireless applications. In this thesis, a simple joint estimation and compensation technique to estimate multi-path channel, phase noise and IQ-Imbalance parameters in MIMO-OFDM systems under slow fading is proposed. A subcarrier multiplexed (SM) preamble structure to estimate the channel and impairment parameters with minimum overhead is introduced and used in the estimation of IQ-Imbalance parameters as well as the initial estimation of effective channel matrix including common phase error (CPE). We then use a novel tracking method based on the second order statistics of the inter-carrier interference (ICI) and noise to update the effective channel matrix throughout an OFDM frame. Simulation results for a variety of scenarios show that the proposed low-complexity estimation and compensation technique can efficiently improve the performance of MIMO-OFDM systems in terms of bit-error-rate (BER).
Digitally Assisted, Fully Integrated, Wideband Transmitters for High-Speed Millimeter-Wave Wireless Communication Links
Digitally Assisted, Fully Integrated, Wideband Transmitters for High-Speed Millimeter-Wave Wireless Communication Links - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Digitally Assisted, Fully Integrated, Wideband Transmitters for High-Speed Millimeter-Wave Wireless Communication Links write by David del Rio. This book was released on 2018-07-07. Digitally Assisted, Fully Integrated, Wideband Transmitters for High-Speed Millimeter-Wave Wireless Communication Links available in PDF, EPUB and Kindle. This book presents design methods and considerations for digitally-assisted wideband millimeter-wave transmitters. It addresses comprehensively both RF design and digital implementation simultaneously, in order to design energy- and cost-efficient high-performance transmitters for mm-wave high-speed communications. It covers the complete design flow, from link budget assessment to the transistor-level design of different RF front-end blocks, such as mixers and power amplifiers, presenting different alternatives and discussing the existing trade-offs. The authors also analyze the effect of the imperfections of these blocks in the overall performance, while describing techniques to correct and compensate for them digitally. Well-known techniques are revisited, and some new ones are described, giving examples of their applications and proving them in real integrated circuits.
RF Transceiver Design for MIMO Wireless Communications
RF Transceiver Design for MIMO Wireless Communications - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook RF Transceiver Design for MIMO Wireless Communications write by Abbas Mohammadi. This book was released on 2012-02-15. RF Transceiver Design for MIMO Wireless Communications available in PDF, EPUB and Kindle. This practical resource offers a thorough examination of RF transceiver design for MIMO communications. Offering a practical view on MIMO wireless systems, this book extends fundamental concepts on classic wireless transceiver design techniques to MIMO transceivers. This helps reader gain a very comprehensive understanding of the subject. This in-depth volume describes many theoretical and implementation challenges on MIMO transceivers and provides the practical solutions for these issues. This comprehensive book provides thorough descriptions of MIMO theoretical concepts, MIMO single carrier and OFDM modulation, RF transceiver design concepts, power amplifier, MIMO transmitter design techniques and their RF impairments, MIMO receiver design methods, RF impairments study including nonlinearity, DC-offset, I/Q imbalance and phase noise and their compensation in OFDM and MIMO techniques. In addition, it provides the most practical techniques to realize RF front-ends in MIMO systems. This book is supported with many design equations and illustrations. The first book dedicated to RF Transceiver design for MIMO systems, this volume serves as a current, one-stop guide offering you cost-effective solutions for your challenging projects in the field.
