Download or read book Performance Analysis of Trellis Codes Transmitted Over Fading Channels written by Chintha Tellambura and published by . This book was released on 1993 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Performance Analysis of Trellis Codes Transmitted Over Fading Channels written by Chinthananda Tellambura and published by . This book was released on 1993 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Analysis of the Error Performance of Trellis coded Modulations in Rayleigh Fading Channels written by and published by . This book was released on 1989 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: Trellis-coded modulation (TCM), when combined with interleaving, is known to give good error performance in fading channels. Previously, the only analytical guide was an upper bound, which could be very loose over the range of the signal to noise ratio of interest. This paper presents an exact expression for the pairwise error event probability of TCM transmitted over Rayleigh fading channels. It includes PSK and multilevel QAM codes, as well as coherent and partially coherent detection. The paper also studies several coded modulation schemes this way.

Download or read book Design and Performance Analysis of Trellis Coded Systems Over Rician Fading Channels with Imperfect Phase Reference written by Murat Uysal and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Coding for Wireless Channels written by Ezio Biglieri and published by Springer Science & Business Media. This book was released on 2005-05-24 with total page 433 pages. Available in PDF, EPUB and Kindle. Book excerpt: Accessible introduction to the theoretical foundations of modern coding theory Including numerous applications to wireless transmission systems The author is famous in the field of coding and wireless communications for his work in the area of faded channels & communcations.

Download or read book Digital Communication over Fading Channels written by Marvin K. Simon and published by John Wiley & Sons. This book was released on 2005-02-11 with total page 936 pages. Available in PDF, EPUB and Kindle. Book excerpt: The four short years since Digital Communication over Fading Channels became an instant classic have seen a virtual explosion of significant new work on the subject, both by the authors and by numerous researchers around the world. Foremost among these is a great deal of progress in the area of transmit diversity and space-time coding and the associated multiple input-multiple output (MIMO) channel. This new edition gathers these and other results, previously scattered throughout numerous publications, into a single convenient and informative volume. Like its predecessor, this Second Edition discusses in detail coherent and noncoherent communication systems as well as a large variety of fading channel models typical of communication links found in the real world. Coverage includes single- and multichannel reception and, in the case of the latter, a large variety of diversity types. The moment generating function (MGF)-based approach for performance analysis, introduced by the authors in the first edition and referred to in literally hundreds of publications, still represents the backbone of the book's presentation. Important features of this new edition include: * An all-new, comprehensive chapter on transmit diversity, space-time coding, and the MIMO channel, focusing on performance evaluation * Coverage of new and improved diversity schemes * Performance analyses of previously known schemes in new and different fading scenarios * A new chapter on the outage probability of cellular mobile radio systems * A new chapter on the capacity of fading channels * And much more Digital Communication over Fading Channels, Second Edition is an indispensable resource for graduate students, researchers investigating these systems, and practicing engineers responsible for evaluating their performance.

Download or read book Performance of Space time Trellis Codes in Fading Channels written by Mohammad Omar Farooq and published by . This book was released on 2005 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Performance of Trellis Coded Modulation Over Indoor Wireless Rician Fading Channels written by Juan M. Bargalló and published by . This book was released on 1992 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Coded Modulation Techniques for Fading Channels written by Seyed Hamidreza Jamali and published by Springer Science & Business Media. This book was released on 1994-04-30 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the past decade there has been a proliferation of research in the area of bandwidth-efficient coded-modulation techniques. The primary advantage of these schemes over modulation schemes employing traditional error correcting codes is their ability to improve the performance of the communication system without bandwidth expansion. This property makes them a suitable choice for channels which are limited in both power and bandwidth.

Download or read book Performance Analysis and Design of Space time Codes written by Chen Liao and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Wireless communication technologies have evolved from the original analog networks to IP-based network. Today's wireless communications have been affected by increasing customer expectations on wireless wideband internet services and continuously evolving improvements on technologies. Wireless communication systems must increase their ability to respond to the challenges. The new generation wireless systems (3G/4G) are designed for this purpose. The notable characteristic of 3G/4G is that it provides high data rate transmission at data rate up to 348kbps/2Mbps for 3G and 100Mbps/1Gbps for 4G. Designing the system for such high data rate transmission has become very challenging for wireless systems where the multipath fading is an important factor. In recent years, researches are ongoing in the industry and academic to increase capacity performance of wireless systems through antenna diversity. Multiple Input Multiple Output (MIMO) is one of the major recent developments in the study of high data rate transmission. There has been considerable attention paid to remarkable performance improvements in MIMO in terms of capacity. Another technology that has been traditionally adopted for wireless communications is the channel coding. Combining MIMO with channel coding has received increasing interest to support a variety of high data rate applications. These schemes have been termed as "space-time codes". Space-time codes are currently an area of exciting activity and have been studied as promising candidates for future 3G/4G systems. The most important characteristic of space-time codes is that it can provide full diversity gain as well as coding gain. In this dissertation, both performance analysis of upper bound of Pair-Wise Error Probability (PEP) and exact PEP are performed. In the derivation of exact PEP, a new method is presented. The method is straightforward and comprehensible. The upper bound provides the insight to understand the performance behavior for high Signal-to-Noise Ratio (SNR), while the exact PEP provides a better understanding of the performance behavior to other range of SNR. Design criteria for space-time codes had been first developed by Tarokh, which utilize the analysis of the upper bound on PEP to maximize diversity gain and coding gain from the property of the codeword distance matrix. These criteria are the most widely accepted, which form the basis for space-time codes. The criteria assume that the performance of space-time codes is dominated by the dominant error events. However, there are no dominant error events in fading channel for space-time codes. Therefore, Tarokh's criteria do not provide design guideline for the coding gain. Union bound analysis offers a alternative solution to this problem. The union bound technique is a more attractive method that allows us to analyze the contribution of all error events to the performance. In this thesis, the performance of space-time codes are analyzed using union bound analysis. Based on the union bound on Frame Error Rate (FER), new design criteria are proposed. This is achieved by applying more accurate upper bound of PEP in the union bound analysis. With the proposed criteria, new coding gain performance metrics had been defined. New codes based on the new performance metrics are designed and their coding gain performance superiority are demonstrated. Space-time block codes have been initially designed to provide full diversity order with low decoding complexity, but without coding gain. By integrating space-time trellis codes with space-time block codes, super-orthogonal space-time trellis codes can significantly enhance the coding gain performance. However, the super-orthogonal space-time trellis codes improve performance only in slow fading channel, but do not perform well in fast fading channel. In fast fading channel, the orthogonal design of space-time block codes has little effect on the coding gain and does not lead to noticeable improvement. Furthermore, super-orthogonal space-time trellis codes introduce the diversity gain loss in fast fading channel. It is well known that the performances of space-time codes are dominated by diversity gain and any diversity gain loss may cause substantial loss in performance. We therefore develop orthogonal space-time trellis codes, which improve performance in diversity gain in fast fading channel. The improvement is achieved by transferring the vector output of space-time trellis codes into an orthogonal matrix of space-time block codes, and meanwhile maintaining the symbol Hamming distance of space-time trellis codes. Theoretical analysis and simulation results had demonstrated that the proposed codes can improve diversity gain linearly with an increase in the number of transmit antennas. Performance saturation and decoding complexity increase with the increased number of trellis states are the major problems that trellis-based codes have to face in practice. Turbo codes that allow for reaching near Shannon limit performance are a significant advance in digital communications. Space-time turbo codes have been developed to achieve high performance. In a perfect world, system designers would like to achieve high performance while maintaining a full code rate. Therefore, puncture operation is always used in space-time turbo codes. The problem with the puncture operation in space-time turbo codes is that codeword distance matrix is rank deficient for small diversity gain in slow fading channel, which constitutes a major problem with space-time turbo codes. Space-time turbo codes that concern the rank deficiency have been developed. The codes improve performance by reducing the effect of rank deficiency on performance, but exist high complexity in both code structure and design criteria. This limitation makes the codes not suitable for the design of complex codes with large trellis state and/or large numbers of transmit antennas. A new space-time turbo codes have been proposed in this research. In previous works, it has been demonstrated the systematic structure with the rotation of the output of the low constitute encoder can effectively reduce the rank deficient effect on performance. Our new codes utilize the systematic characteristic to construct a simple code structure. Further, a simple but very effective trace criterion has been proposed. With the simple codes structure and design criteria, the design of complex codes can be achieved with significant improvement in coding gain performance for the systems with small diversity gain in slow fading channel. Overall, this dissertation presents new design criteria and new codes that contribute to improving performances of space-time codes.

Download or read book The Performance Analysis and Decoding of High Dimensional Trellis coded Modulation for Spread Spectrum Communications written by Changlin Chen and published by . This book was released on 1997 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Performance Evaluation of Trellis Coded Modulation TCM Codes for Fading Mobile Channels written by Kok Jung Yong and published by . This book was released on 1995 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Trellis Coding on Slow fading Channels written by Yiuman S. Leung and published by . This book was released on 1994 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A New Upper Bound on Trellis Code Error Performance on Rayleigh Flat fading Channels written by Dingman, Robert C and published by Hamilton, Ont. : Communications Research Laboratory, McMaster University. This book was released on 1992 with total page 105 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Informatio fundamentalis super hodierno Bohemiae status written by Augustin Schmied von Schmiedebach and published by . This book was released on 1620 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Design and Performance of Trellis Codes for Wireless Channels written by Saud Ahmed Al-Semari and published by . This book was released on 1995 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Performance of Turbo Codes on AWGN and Fading Channels written by Raja Sekhar Bachu and published by . This book was released on 2000 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: